Merge pull request 'merge: milestone/v0.11-placement-tracking -> main (v0.11 complete — Placement Tracking and Audit)' (#6) from milestone/v0.11-placement-tracking into main

v0.11 milestone complete — Placement Tracking and Audit (REQ-F-020; REQ-11-001..005). P6 final review SHIP (0 P0s; 2 P1 doc-level findings dispositioned) + audit PASS. Ship: tag v0.10.6 at the merge, release lane, branch cleanup.

.ciagent/CHECKPOINT.json

@@ -0,0 +1,9 @@
+{
+ "phase": 6,
+ "stage": "ship_pending",
+ "milestone": "v0.11",
+ "milestone_name": "placement-tracking",
+ "phase_role": "final",
+ "attempts": 0,
+ "updated_at": "2026-10-22T04:50:00Z"
+}

.ciagent/GRILL.md

@@ -331,3 +331,65 @@ None. Every phase maps to a REQ-10-001..005 row; the one candidate (employer dra
 6. G-317/G-318/G-311 → PLAN Task 4-1-02 amendment note (single combined note)
 7. G-319 → PLAN Task 3-1-01 amendment note
 8. G-320b → PLAN Task 4-2-01 amendment note + UX criterion 3 clause
+
+---
+
+## v0.11 Grill (Phase 0 GRILL, 2026-10-01)
+
+### Run: 2026-10-01 03:00 (mode: mechanical, focus: all — v0.11 placement tracking)
+
+### Verdict: Proceed (confidence: 0.82)
+
+**Verdict summary.** The v0.11 plan (6 phases, 15 waves, ~30 tasks) is feasible, correctly sequenced, and — rare for a plan this audit-flavored — unusually honest about its own limits (R-67's three methodology gaps are pinned into the export). Every load-bearing tree citation re-verified held: the billing transition-matrix shape, the `decide_claim` same-transaction precedent, the `submitted`-only application status (zero migration), the G-313 conftest reset pattern, the G-319 counts-only pin, all four main.py wiring sites, the engine-client error-class rails, and the overview mock block D-109 replaces. The two genuinely novel mechanisms (the hash chain, the export) each carry dedicated adversarial tests (tamper/fork/determinism), and the one coherence gap research found (R-80 re-hire) is pinned to a route. But red-teaming found **8 binding defects**: the export's verification story overclaims by omission (the chain detects in-place mutation of an intact sequence — it cannot detect a wholesale DB rewrite, and no instruction tells the auditor how to use prior exports as the anchor); **the learner status panel cannot find the learner's application on revisit** (the read route is keyed by `application_id`, no route exists to discover it for a posting, and the plan never says how the panel obtains it — the happy path only works in the same browser session); the apply route's idempotent arm returns a 200 "applied" confirmation for a withdrawn (terminal) application — a lie D-104's withdraw creates; `role_title` accepts the empty string (the 422 arm pins absence, not emptiness); revoked placements are counted but their evidence bundles are unspecified (an unverifiable `revoked_count`); the re-hired PlacementRow's `decided_at` is unspecified; the operator route's `to` has no 422-vs-409 discrimination; and nothing pins the live UI wording against "CIRR-verified" theater. All eight amend existing tasks — nothing re-architects, no scope cuts required.
+
+### Per-Axis Findings
+
+| # | Axis | Verdict | Reason |
+|---|------|---------|--------|
+| 1 | Feasibility | PASS | Outcome is unmeasurable without this milestone (no hire state exists in-tree); every prerequisite shipped; 6-phase shape matches the two shipped precedents |
+| 2 | Scope | PASS | Explicit out-of-scope list; R-67's three pilot gaps pre-disclosed in the methodology (the hidden-requirement class handled better than any prior milestone); the one boundary change (G-319 supersession) is decisioned with a pin split |
+| 3 | Architecture | CONCERN → fixed | Chain NOT over-engineered (it IS the deliverable; the cheap version) but UNDER-scoped (G-321: the walk cannot detect a wholesale DB rewrite — export-to-export prefix continuity is the anchor); the mine-read gap strands the learner status panel on revisit (G-322); D-100 cross-store transaction verified sound (one Session, one commit — the two-commit alternative voids the tamper-evidence) |
+| 4 | People | PASS | Roster matches the work; the security-auditor's four review points cover exactly the novel-risk surfaces |
+| 5 | Timeline | PASS | Consistent with v0.9/v0.10 identical-shape precedents; the flush-then-hash-then-commit append is the one new mechanism, mitigated by R-70's in-tree template + tamper/fork arms |
+| 6 | Budget | PASS | Zero new deps, zero knobs, zero workflow changes; chain verification is O(n) sha256 over tiny rows |
+| 7 | Risks | CONCERN → fixed | Pre-mortem done (R-80 found + pinned by research itself; all 10 open risks map 1:1 to tasks); NEW cross-decision defect found: apply → withdraw → re-apply returns a 200 "applied" lie (G-323 — D-043 × D-099 × D-104 interaction nobody mapped) |
+| 8 | Governance | CONCERN → fixed | Decisions traceable + discipline enforced (the R-80 escalation flow is the pattern working); MISSING: live-surface wording discipline — "CIRR-verified" theater drift unpinned (G-328); the operator route's 422-vs-409 split unspecified (G-327) |
+| 9 | Adoption | CONCERN → fixed | Export is honestly-minimal (dataset + disclosure, not theater) PROVIDED G-321/G-328 hold; counting gameable only via operator-gated claim approval — honestly disclosed (a-321); empty-string role_title accepted (G-324) |
+| M | Meta | CONCERN → fixed | Revoked placements' evidence bundles unspecified — an auditor handed revoked_count with no evidence has an unverifiable number, and correction history is what an auditor most wants to inspect (G-325); the re-hired row's decided_at unpinned (G-326); simplest-80% version = this plan (no cut found) |
+
+### Binding Decisions (G-321..G-328 — applied to PLAN before execute)
+
+**G-321 — the export methodology states the chain's proof scope, its limit, and the auditor's real anchor.** The walk proves in-place mutation/fork detection of an intact sequence; it does NOT detect a wholesale DB rewrite (delete all events, re-append a fresh plausible chain from GENESIS — it walks green; GENESIS is a constant with no external anchor). PlacementRow itself is not hash-chained — a raw-SQL status flip leaves a chain-consistent ledger with a lying row. Decision: the methodology's `verification` block + the summary's verification instructions state (a) what the chain proves, (b) what it does not (wholesale replacement — the auditor's defense is export-to-export continuity: a prior export's `ledger.events` must appear as an exact prefix of a later export's, and `head_hash` at the prior export must equal the hash at that prefix position), and (c) an event↔row cross-consistency check (every active placement has `placement.created`; every revoked has `placement.revoked`; revoked_count matches the `placement.revoked` events). Amends Tasks 4-1-01, 4-1-02; asserted present by 4-1-03. Confidence 0.80.
+
+**G-322 — the mine point-read: the learner status panel must never depend on client-persisted application_ids.** The read route is keyed by application_id, but no route discovers a learner's application for a posting (the idempotent apply return yields the id only in-session; there is no by-(posting, learner) read anywhere in-tree) — REQ-11-005's outcome visibility breaks on revisit, the common case for a job board. Decision: store `get_application_by_posting_learner(posting_id, learner_id)` (the insert_application unique key — the get_posting point-read shape) + route `GET /v1/marketplace/applications/mine?posting_id=&learner_id=` on the unchanged D-043 gate stack, returning `{application_id, status}` or 404. The job-detail panel composes: mine-read → found? render the status panel via D-104's read : not found? render the apply CTA. Amends D-104 (additive route), Tasks 5-1-01 + 5-2-01; tests in test_learner_status.py (own/foreign/unverified/unknown arms + 404-when-none). Confidence 0.85.
+
+**G-323 — apply on an existing terminal application → 409, never a 200 "applied" confirmation.** insert_application's idempotent arm (marketplace/store.py:341-344) returns the EXISTING application with 200 — after D-104's withdraw makes it terminal, re-apply tells the learner they applied to a job they can never re-enter the pipeline for. Decision: the apply route's idempotent arm gains a terminal-state guard: returned application in `withdrawn`/`rejected`/`hired` → 409 `{"reason": "application_terminal", "status": …}` (the posting_not_published 409 shape, marketplace.py:366-373), never a 200; no new application row (the unique key stands); recovery is visibility (G-322's mine-read + status panel), not resurrection. Amends Task 2-2-01's test list (apply → withdraw → re-apply → 409). Confidence 0.75.
+
+**G-324 — `role_title = Field(min_length=1, max_length=200)`; start_date keeps no semantic range.** Pydantic "required" rejects absence, not emptiness — the house Field shape (marketplace/base.py:68-71) is not specified for the hire body and `role_title: ""` would enter the hashed ledger. Decision: min_length=1 (pinned beside the missing-fields 422 arm), max_length=200 (bounds absurd payloads out of the hashed rows). start_date stays a bare pydantic date — retroactive + future legal per D-103; garbage dates surface as anomalous by_cohort_month buckets in the operator overview and are corrected via the revoke/re-hire lane; the methodology's attestation note covers date integrity. Amends Tasks 1-1-01, 2-1-01. Confidence 0.80.
+
+**G-325 — evidence_bundles cover EVERY placement (active + revoked), each with the full event history.** An auditor handed `revoked_count: 3` with no evidence for the three revocations has an unverifiable number — and the correction history (hired → revoked → rehired) is precisely what an auditor most wants to inspect. Decision: bundles cover active AND revoked placements with the full event history incl. placement.revoked/placement.rehired; `cohort` stays active-only; revoked_count equals the placement.revoked events (cross-checkable, rides G-321(c)). Amends Tasks 4-1-01, 4-1-03 (completeness test: every placement active-or-revoked has a bundle). Confidence 0.80.
+
+**G-326 — the re-hired PlacementRow's decided_at = the re-hire event's store-stamped created_at.** D-102 stamps decided_at from "the hired transition's created_at" — a re-hire has no hired transition; an executor will guess. Decision: the same `datetime.now(UTC)` stamp rule extends to the re-hire arm; stated in the module docstring + asserted in the revoke→re-hire test arm. Amends Task 2-2-02. Confidence 0.85.
+
+**G-327 — the operator transition route's `to` is a pydantic Literal of the seven D-099 statuses.** Unknown value → 422 (body validation), matrix-illegal known value → 409 InvalidTransition — the route never sees a status outside the vocabulary (no 500s, no silent acceptance). Test arm in test_admin_lane.py (garbage `to` → 422, never 500/409). Amends Task 2-2-02. Confidence 0.85.
+
+**G-328 — live surfaces never present attestation as verification.** Nothing pins the admin placements block / overview copy against the theater drift — "CIRR-verified placements" or "verified: 1,000" on a live surface presents attestation as third-party verification (A-304), the exact self-certification trap the milestone could fall into. Decision: live surfaces label counts as recorded placements ("distinct learners placed", "placements recorded"); "CIRR" NEVER appears as a verification claim on any live surface — "CIRR-style" describes the export format in release notes/methodology only; the summary's title renders the attestation language ("employer-attested, operator-overseen"). Amends Task 4-2-01 (copy) + UX criterion 5's test arm (source pin: no "verified" placement wording on any new surface). Confidence 0.75.
+
+### Advisories (recorded, no action)
+
+- a-321: No technical self-hire guard exists (learner handles and employer accounts are disjoint namespaces); the anti-gaming control is operator claim-approval diligence + per-employer overview detection + the revoke lane — already disclosed as R-67 gap (c); do not add a theater cross-check.
+- a-322: Withdraw shares the apply-rate window (5/60s per learner, D-104) — a learner withdrawing 5 applications quickly locks themselves out of applying for the window's remainder. Honest, bounded, no new knob.
+- a-323: The matrix arm (read status → validate) is check-then-act, but the terminal guard makes a concurrent loser's write a 409-conflict on re-read; the D-111 concurrent-transition test covers the shape; no pessimistic locking at pilot volumes.
+- a-324: The employer pipeline list necessarily carries learner_id per row (own postings only) — the G-319 pin split's application-scoped arm working as decisioned; the P2 security review confirms the list route's cross-entity arms return 403 with no data, same as the transitions.
+
+### Escalations
+
+None. All eight findings resolve with evidence-backed defaults (each names its amends-task and its test); nothing re-architects, no axis falls below 0.60.
+
+### Plan Edits Recorded (applied by the orchestrator)
+
+1. G-321/G-325/G-328 → PLAN Tasks 4-1-01, 4-1-02, 4-1-03, 4-2-01 amendment notes + UX criterion 5 arm
+2. G-322 → PLAN Tasks 5-1-01, 5-2-01 amendment notes (additive route per D-104)
+3. G-323 → PLAN Task 2-2-01 amendment note (apply-route terminal guard + test arm)
+4. G-324 → PLAN Tasks 1-1-01, 2-1-01 amendment notes
+5. G-326/G-327 → PLAN Task 2-2-02 amendment notes

.ciagent/PERSONAS.md

@@ -2,13 +2,13 @@
 
 ## Persona Roster
 
-> **v0.10 update (RESEARCH, lead-developer assessment):** milestone = B2B Employer Network (Feature — ai_service/employers/ module: 8th D-027 store + scrypt auth + session/claim flows, /v1/employers routes, employer web-surface conversion + admin network overview). **Activated:** lead-developer (coordination), backend-engineer (owns ai_service/employers/* + api/employers*.py + api/employers posting/billing routes + the D-091 helper + config.py knobs + main.py wiring — REQ-10-001..005 core), data-engineer (owns the 4-table employer store schema: account/session/claim/audit rows, unique + check-first constraints, tz normalization — REQ-10-001/002), frontend-engineer (owns the employer surface conversion + engine-client employer section + SessionRequiredError + login/register pages + packages/types/employer.ts + admin overview sections + pricing CTA conversion — REQ-10-003/005), security-auditor (phase-specific: scrypt params + compare_digest, session hashing-at-rest, throttle windows, CORS Authorization, 422 password-echo scrub, claim-evidence honesty, sessionStorage exposure, PII — REQ-10-001/002), identity-engineer stays DEACTIVATED (see its note — employer auth is NOT the v0.5 learner identity module). **Deactivated:** cli-engineer, devops-engineer, sandbox-engineer, ai-engineer, voice-engineer, design-system-engineer (all unchanged surfaces this milestone).
+> **v0.11 update (RESEARCH, lead-developer assessment):** milestone = Placement Tracking and Audit (Feature — ai_service/placements/ module: 9th D-027 store with the hash-chained placement_event ledger, the application state machine via one transactional transition_application, /v1/employers/applications per-target routes, learner withdraw/status routes in marketplace.py, the placements_admin operator lane + export, four web surfaces). **Activated:** lead-developer (coordination + the R-80 re-hire coherence review + the G-319 pin-split review), backend-engineer (owns ai_service/placements/* + api/placements_admin.py + the employer application routes + learner routes in marketplace.py + deps.py get_placement_store + main.py wiring — REQ-11-001..005 core), data-engineer (owns the 2-table placement store schema: PlacementRow partial-unique + PlacementEventRow global hash chain flush-then-hash-then-commit, canonical serialization, the D-102 revoke semantics — REQ-11-001/002), frontend-engineer (owns the four D-109 surfaces: /employer/applications page, overview placements section, job-detail status panel, admin placements block + engine-client placements section + packages/types/placement.ts — REQ-11-003/005), security-auditor (phase-specific: the hash-chain tamper evidence, the G-319 supersession PII review, gate-order pins, export integrity — REQ-11-001/002/004). **Deactivated:** cli-engineer, devops-engineer, sandbox-engineer, ai-engineer, identity-engineer (learner gates compose unchanged — D-104), voice-engineer, design-system-engineer (all unchanged surfaces this milestone).
 
 ### lead-developer
 ```yaml
 active: true
 phase_specific: false
-reason: Coordinates the v0.10 B2B Employer Network milestone (auth foundation → claim → surface conversion → posting management → checkout waves); owns wave order + the cross-boundary wire review (employer.ts ↔ employers/base.py dual-schema pins, the 402/401/403 discrimination contract) + the D-091 extraction's no-drift review (both principal gates compose the same helper)
+reason: Coordinates the v0.11 Placement Tracking milestone (store → state machine → reporting → export → visibility waves); owns wave order + the R-80 re-hire coherence decision's implementation review (the placement.rehired route/event shape) + the G-319 pin-split review (counts-only stays on own-postings lists; learner_id on application-scoped routes only) + the placement.ts ↔ placements/base.py dual-schema pin review + the D-100 cross-store transaction discipline review (one transition_application, no second status writer)
 domain: coordination
 frameworks:
   - turborepo
@@ -27,7 +27,7 @@ territory:
 ```yaml
 active: false
 phase_specific: false
-reason: v0.10 DEACTIVATED — no infra changes; the employer module rides the existing release lane (image + assets build automatically on tag per D-064/D-065). Roster + v0.8 territory retained.
+reason: v0.11 DEACTIVATED — no infra changes; the placements module rides the existing release lane (image + assets build automatically on tag per D-064/D-065). Roster + v0.8 territory retained.
 domain: devops
 frameworks:
   - docker
@@ -53,7 +53,7 @@ territory:
 ```yaml
 active: false
 phase_specific: false
-reason: v0.10 DEACTIVATED — no CLI changes; the employer surface is server+web only. Roster + v0.8 territory retained.
+reason: v0.11 DEACTIVATED — no CLI changes; the placement surface is server+web only. Roster + v0.8 territory retained.
 domain: cli
 frameworks:
   - node
@@ -82,7 +82,7 @@ territory:
 ```yaml
 active: false
 phase_specific: false
-reason: v0.10 DEACTIVATED — no sandbox fabric changes; the D-068 degrade surface ships unchanged. Roster + v0.8 territory retained.
+reason: v0.11 DEACTIVATED — no sandbox fabric changes; the D-068 degrade surface ships unchanged. Roster + v0.8 territory retained.
 domain: infra
 frameworks:
   - python
@@ -106,7 +106,7 @@ territory:
 ```yaml
 active: true
 phase_specific: true
-reason: v0.10 re-activated (phase-specific) — P1 auth review: scrypt params/verify discipline (N=2^14/r=8/p=1 module constants pinned by test, hmac.compare_digest, self-describing rows so params evolve without invalidating stored hashes — D-086), session tokens hashed-at-rest (sha256(token) only, DB-leak yields nothing — D-087), throttle windows (per-email failed-login + global cap; email-keyed never IP — D-088), 401 vs 403 semantics (credential vs authorization — D-090); P2 claim review: evidence is advisory, never displayed as verification (A-304 — example.com corpus makes match=false corpus-wide), one-account-one-entity UNIQUE enforcement; P3+ the 422 password-echo fix (main.py pii_fields gains "password"+"email" — pydantic 422s echo err.input today, R-56/open-risk-3), sessionStorage exposure copy, employer mock-complete own-session check (G-301 hole class); P6 final review (no secrets/logs/releases leak credentials)
+reason: v0.11 re-activated (phase-specific) — P1 ledger review: the hash-chain construction (canonical JSON rules, GENESIS pinned, UNIQUE(prev_hash) fork backstop, flush-then-hash-then-commit single append path, no delete path — R-70), partial-unique active-placement guard (G-316 shape); P2 gate review: G-311 gate order on application transitions (401 → 403-claim → 403-cross-entity → 409), the G-319 supersession PII review (learner_id = opaque handle, application-scoped only, anti-enumeration preserved — R-79); P4 export integrity (determinism rules, generated_at exclusion, methodology honesty gaps stated — R-67/R-68/R-73); P6 final review (no PII/credentials in logs or releases)
 domain: security
 frameworks:
   - pytest
@@ -116,19 +116,19 @@ constraints:
   - secrets-via-env-only (D-014)
   - secrets-never-logged
   - fail-closed-on-unconfigured
-  - tokens-hashed-at-rest (D-087)
-  - never-display-forgeable-as-verified (D-089/A-304)
+  - never-display-forgeable-as-verified (A-304 — the export methodology states its own limits)
+  - tamper-evidence-tested (an audit ledger nobody has tried to break is theater, D-111)
 territory:
-  - "apps/ai-service/ai_service/employers/**"
-  - "apps/ai-service/ai_service/api/employers*.py"
-  - "apps/ai-service/tests/employers/**"
+  - "apps/ai-service/ai_service/placements/**"
+  - "apps/ai-service/ai_service/api/placements_admin.py"
+  - "apps/ai-service/tests/placements/**"
 ```
 
 ### backend-engineer
 ```yaml
 active: true
 phase_specific: false
-reason: v0.10 ACTIVATED — owns the employers module core: ai_service/employers/base.py (pydantic contracts), passwords.py (stdlib scrypt KDF, D-086), store.py wiring via deps.py get_employer_store, claim evidence normalization (stdlib suffix match, D-089); api/employers.py (auth routes register/login/logout/me + claim + own-postings CRUD/publish/close + own-checkout + own-entitlement; require_employer_session dep per D-090) + api/employers_admin.py (accounts/claims/audit operator routes, require_admin imported from marketplace_admin — D-094); the D-091 shared consume_posting_entitlement helper + its adoption in marketplace_admin.create_posting (wire contract byte-identical); config.py throttle knobs + .env.example; main.py wiring (employer_store lifespan + close, router mounts, CORS allow_headers gains "Authorization" — R-60)
+reason: v0.11 ACTIVATED — owns the placements module core: ai_service/placements/base.py (pydantic contracts + the D-099 transition matrix + event-name vocabulary), store.py wiring via deps.py get_placement_store; the ONE transactional transition_application method (status write + ledger append + placement-on-hired, one commit — D-100) + the R-70 flush-then-hash-then-commit append shape; api routes: employer per-target transitions under /v1/employers/applications (G-311 gate order — D-105), learner withdraw/status in marketplace.py (D-043 stack unchanged — D-104), placements_admin.py operator lane (generic transition + revoke + R-80 re-hire route + overview/export reads — D-106/D-108); main.py wiring (placement_store lifespan + close, placements_admin mount); no new config knobs (no new throttles)
 domain: backend
 frameworks:
   - fastapi
@@ -141,16 +141,14 @@ constraints:
   - secrets-via-env-only (D-014)
   - idempotent-scripts
   - fail-closed-admin
-  - never-call-cloud-in-tests (zero network by construction, D-096)
-  - gate-before-insert (the 402 consumes nothing, R-58)
-  - real-kdf-in-tests (no fake-hash path, D-096)
+  - never-call-cloud-in-tests (zero network by construction, D-111)
+  - one-status-writer (placements store is the ONLY post-creation writer of application.status — R-78)
+  - no-cross-family-foreign-keys (G-302 ID references at read)
 territory:
-  - "apps/ai-service/ai_service/employers/**"
-  - "apps/ai-service/ai_service/config.py"
+  - "apps/ai-service/ai_service/placements/**"
   - "apps/ai-service/ai_service/main.py"
   - "apps/ai-service/ai_service/api/**"
-  - "apps/ai-service/tests/employers/**"
-  - "apps/ai-service/.env.example"
+  - "apps/ai-service/tests/placements/**"
   - "apps/ai-service/pyproject.toml"
 ```
 
@@ -158,7 +156,7 @@ territory:
 ```yaml
 active: true
 phase_specific: false
-reason: v0.10 ACTIVATED — owns the employer surface conversion (D-092): engine-client employer section (register/login/logout/me, claim, own-postings, own-checkout, own-entitlement + SessionRequiredError 401 discrimination + nc-employer-session sessionStorage wrapper — the adminToken pattern), /employer/login + /employer/register pages (greenfield), postings page own-lifecycle conversion, overview page real active-postings + applicant counts (talent metrics stay mock-labeled), employer profile via the existing public GET, packages/types/employer.ts (dual-schema pinned, D-093); admin overview sections on the moderation page (accounts list, claim queue with evidence signal + approve/reject, audit — the entitlement panel's locked-state pattern, D-094); pricing CTA conversion from contact-path to employer-login path (supersedes D-079); talent pages stay mock (D-092)
+reason: v0.11 ACTIVATED — owns the four D-109 surfaces: new /employer/applications page (own pipeline with status badges + per-target transition CTAs + hire form {role_title, start_date}), employer overview placements section (replaces the mock-labeled placement metrics block — D-092 never-fake-convert), job-detail-client application-status panel (learner history + placement confirmation via D-104 read, EngineError.status discrimination, no new error classes), admin moderation placements block (overview counts + per-employer lists + export links, adminToken transport); engine-client placements section (employer/learner/admin functions, AbortController everywhere, SessionRequiredError reuse — D-110); packages/types/placement.ts dual-schema pinned (D-110); talent badge stays absent (A-304)
 domain: frontend
 frameworks:
   - react
@@ -174,14 +172,14 @@ constraints:
 territory:
   - "apps/web/**"
   - "packages/ui/**"
-  - "packages/types/employer.ts"
+  - "packages/types/placement.ts"
 ```
 
 ### ai-engineer
 ```yaml
 active: false
 phase_specific: false
-reason: v0.10 DEACTIVATED — no LLM-facing work; employer flows need no tagging/enrichment/embedding changes (publish re-tag + enrich-on-first-publish compose unchanged behind the employer routes).
+reason: v0.11 DEACTIVATED — no LLM-facing work; placement flows need no tagging/enrichment/embedding changes (hire transitions record decisions; no AI surface is touched).
 domain: ai
 frameworks:
   - pydantic
@@ -202,7 +200,7 @@ territory:
 ```yaml
 active: true
 phase_specific: false
-reason: v0.10 ACTIVATED — owns the 8th D-027 store schema: employers/store.py with the 4-table family (employer_accounts: email UNIQUE + scrypt hash + employer_id UNIQUE-on-approval; employer_sessions: token_hash UNIQUE, expires_at = login + 7-day constant, lazy TTL; employer_claims: pending→approved|rejected + evidence JSON + decided_by/decided_at; employer_audit_events: the BillingEventRow audit shape), the employer_ prefix (bare `employer` is marketplace's table), check-first one-pending-per-entity/one-approved-owner constraints (the insert_application precedent), _validate/_normalize + _as_utc tz discipline, SQLModel.metadata.create_all idempotent compat (D-095), consume-free read paths for accounts/claims/audit lists
+reason: v0.11 ACTIVATED — owns the 2-table 9th store schema (D-112): placements/store.py with PlacementRow (id, learner/employer/posting/application refs, role_title, start_date DATE, status active|revoked, created_at, decided_at; partial UNIQUE application_id WHERE status='active' — the G-316 shape, D-102) + PlacementEventRow (append-only global ledger: nullable indexed application_id + placement_id, event_type, actor_type employer|learner|operator|system, actor_ref, payload, prev_hash UNIQUE + hash, created_at — D-101); the canonical serialization rules (sort_keys + separators, _as_utc(dt).isoformat() pinned, no floats — R-79/R-69); flush-then-hash-then-commit append (R-70); the R-80 placement.rehired event vocabulary; cross-store transaction (one Session writes ApplicationRow + both placement tables — D-100); tz discipline + create_all idempotent compat (D-095 shape); _validate/_normalize + surfaced IntegrityError
 domain: data
 frameworks:
   - sqlmodel
@@ -212,12 +210,12 @@ constraints:
   - schema-first
   - type-safe
   - dual-schema-sync
-  - idempotency-by-constraint (UniqueConstraint + check-first)
-  - tokens-never-stored-raw (sha256 only, D-087)
-  - audit-append-only (provenance rows never mutated)
+  - idempotency-by-constraint (partial UNIQUE + check-first)
+  - audit-append-only (the ledger has NO delete path — R-70)
+  - canonical-serialization-pinned (one normalization, test-pinned)
 territory:
-  - "apps/ai-service/ai_service/employers/store.py"
-  - "apps/ai-service/tests/employers/test_store.py"
+  - "apps/ai-service/ai_service/placements/store.py"
+  - "apps/ai-service/tests/placements/test_store.py"
   - "packages/types/**"
 ```
 
@@ -225,7 +223,7 @@ territory:
 ```yaml
 active: false
 phase_specific: false
-reason: v0.10 stays DEACTIVATED — the employer auth in this milestone is NOT the v0.5 learner identity module: identity/ is the KYC/age-gate store (IdentityRecord, derived age bands, require_verified_age gates for LEARNERS per D-043); v0.10's employer principals are a THIRD principal class (D-097 — no learner gates on employer routes, the D-043 composition on learner routes untouched). The identity module, its store, and its gates ship unchanged; backend-engineer owns the new employer auth surface. Reactivation is a founder call if/when a real KYC vendor lands or employer SSO/OIDC (explicitly out of scope at pilot) is scheduled.
+reason: v0.11 stays DEACTIVATED — the milestone composes the EXISTING learner gates unchanged (D-104: the withdraw/status routes ride the D-043 stack — G-5 allowlist → verified 18+ → apply-rate window); no identity-module changes. Reactivation is a founder call if/when a real KYC vendor lands.
 domain: identity
 frameworks:
   - fastapi
@@ -244,7 +242,7 @@ territory:
 ```yaml
 active: false
 phase_specific: false
-reason: v0.5 territory — voice shipped complete; no v0.10 voice work.
+reason: v0.5 territory — voice shipped complete; no v0.11 voice work.
 domain: ai-media
 frameworks:
   - httpx
@@ -265,7 +263,7 @@ territory:
 ```yaml
 active: false
 phase_specific: false
-reason: No design-token or primitive work in v0.10 (login/register pages reuse existing Input/Button/Card primitives); roster retained.
+reason: No design-token or primitive work in v0.11 (the applications page reuses existing Badge/Button/Card primitives); roster retained.
 domain: frontend
 frameworks:
   - tailwindcss
@@ -281,7 +279,7 @@ territory:
 
 | Persona | Phases | Removed After |
 |---------|--------|---------------|
-| security-auditor | 1 (auth surface: scrypt + session hashing + throttles + CORS + 422-scrub fix), 2 (claim evidence honesty + UNIQUE enforcement), 5 (employer mock-complete own-session + checkout review), 6 (final review: no credentials in logs/releases) | milestone complete |
+| security-auditor | 1 (store/ledger review: hash chain, canonical serialization, partial unique, no-delete path), 2 (gate order + G-319 supersession PII review on application routes), 4 (export integrity: determinism rules, methodology honesty), 6 (final review: no PII in logs/releases) | milestone complete |
 
 All other personas span the milestone. Deactivated personas receive no tasks.
 
@@ -289,9 +287,9 @@ All other personas span the milestone. Deactivated personas receive no tasks.
 
 | Conflict | Resolution |
 |----------|------------|
-| backend-engineer vs frontend-engineer (engine-client.ts) | backend-engineer owns the API contract shapes the client consumes; frontend-engineer owns engine-client.ts itself (the employer section, SessionRequiredError, the session wrapper) — the shared `EntitlementResponse`/`PurchaseEntitlement` interfaces in engine-client.ts (lines 730-752) are a frozen v0.9 contract neither side may re-shape; the new employer wire types land in packages/types/employer.ts (data-engineer dual-schema-syncs, lead-developer reviews the pins) |
-| backend-engineer vs security-auditor (api/employers.py) | backend-engineer implements the dep/routes/throttles; security-auditor reviews and may patch security DEFECTS directly in api/employers*.py + employers/passwords.py (its territory) — e.g. the 422 password-echo scrub fix in main.py's pii_fields; implementation vs review stays with backend |
-| backend-engineer vs data-engineer (employers/store.py) | data-engineer owns the schema + store methods; backend-engineer owns routes/deps/wiring that compose it; passwords.py (KDF core) is backend territory, the password_hash COLUMN contract is data territory |
-| backend-engineer vs frontend-engineer (main.py CORS block) | backend-engineer owns the allow_headers edit at main.py:341; security-auditor owns the tests/api/test_cors.py preflight PIN (the E87 regression lesson is a security concern — the pin lives in the security review's changeset) |
-| frontend-engineer vs security-auditor (sessionStorage) | frontend-engineer implements the nc-employer-session wrapper; security-auditor reviews the exposure copy + logout-revoke discipline and pins the no-retry-loop locked state (the G-308 pattern); neither patches the other's files — findings flow through lead-developer |
+| backend-engineer vs frontend-engineer (engine-client.ts) | backend-engineer owns the API contract shapes the client consumes; frontend-engineer owns engine-client.ts itself (the placements section) — the existing identity/marketplace/billing/employer sections are frozen contracts neither side may re-shape; the new wire types land in packages/types/placement.ts (data-engineer dual-schema-syncs, lead-developer reviews the pins) |
+| backend-engineer vs security-auditor (api routes) | backend-engineer implements the routes/deps/gates; security-auditor reviews and may patch security DEFECTS directly in api/placements_admin.py + placements/store.py (its territory) — implementation vs review stays with backend |
+| backend-engineer vs data-engineer (placements/store.py) | data-engineer owns the schema + store methods (rows, chain, canonical serialization); backend-engineer owns routes/deps/wiring that compose it; the transition_application METHOD contract is data territory (the transaction + hash append), the routes calling it are backend territory |
+| backend-engineer vs data-engineer (application.status column) | the placements store is the ONLY post-creation status writer (R-78) — marketplace/store.py's insert_application writes it once at creation; no route or future store adds a second writer outside the one-transaction discipline |
+| frontend-engineer vs security-auditor (PII surfaces) | frontend-engineer implements the application surfaces (learner_id visible on own applicants); security-auditor reviews the G-319 pin split (counts-only stays on own-postings lists) and pins the cross-entity 403 negative arms; neither patches the other's files — findings flow through lead-developer |
 | lead-developer vs any | lead-developer coordinates only, does not directly modify code files |

.ciagent/PLAN.md

@@ -1,198 +1,198 @@
-# Nextcraft — PLAN.md (v0.10 B2B Employer Network)
+# Nextcraft — PLAN.md (v0.11 CIRR-Style Placement Tracking and Audit)
 
 ## Overview
 
-**Milestone:** v0.10 — B2B Employer Network (Feature, D-085): real employer auth/accounts + employer self-serve — employers become principals: registered accounts with server-side sessions (scrypt-hashed credentials, hashed-at-rest session tokens), claim/verify of their existing v0.6 `EmployerRow` entity (admin-approved at pilot, evidence advisory), the employer dashboard converting from the v0.1 mockup to real data (own-postings lifecycle, real counts, honest mock-labels only where no backend exists), self-serve posting management composing the v0.9 entitlement gate unchanged (D-091 shared helper, 402 wire contract byte-stable), and self-serve checkout over the v0.9 billing catalog (buyer = session employer, superseding D-076; admin operator routes retained as fallback + oversight, D-094 network overview). Mock-first doctrine holds: no external auth provider, tests never call a cloud, zero new dependencies (R-66).
-**Tag line:** phase tags advance the v0.9.x line (P0 → v0.9.0 … P6 → v0.9.6 = milestone release), continuing from the v0.8.6 milestone release
-**Branch:** milestone/v0.10-b2b-employer-network
+**Milestone:** v0.11 — CIRR-Style Placement Tracking and Audit (Feature, D-098): the machinery that makes the guiding outcome measurable and auditable — the placement record model (the 9th D-027 store: `PlacementRow` with the partial-unique one-active-placement-per-application guard + the append-only `PlacementEventRow` ledger, one global sha256 hash chain with a `UNIQUE(prev_hash)` fork backstop), the employer-side application state machine extending the v0.6 `submitted`-only status (the forward-only D-099 matrix, per-target employer routes under `/v1/employers/applications`, learner withdraw, the operator lane incl. revoke + the R-80 re-hire), placement reporting (distinct-learner counts cumulative toward ≥1,000, per employer, per start-date cohort month), and the audit-grade export (self-contained JSON + human summary generated from the same document, methodology stating its own three pilot gaps, re-export determinism). Mock-first doctrine holds: no third-party auditor integration (the export IS the deliverable), tests never call a cloud, zero new dependencies (D-112).
+**Tag line:** phase tags advance the v0.10.x line (P0 → v0.10.0 … P6 → v0.10.6 = milestone release), continuing from the v0.10 milestone release (v0.9.6)
+**Branch:** milestone/v0.11-placement-tracking (phase work on phase/NN-* branches; Phase 0 on phase/00-pre-execution)
 
 **Phase list (requirement mapping):**
 
 | Phase | Requirement | Focus |
 |-------|-------------|-------|
-| P1 | REQ-10-001 | Employer auth foundation: employers/ module (8th D-027 store + stdlib scrypt KDF + hashed session rows + both throttle windows), register/login/logout/me routes, main.py wiring (store + CORS Authorization + 422 scrub) — zero web changes |
-| P2 | REQ-10-002 | Employer entity claim: claim route + advisory evidence (stdlib domain match), one account : one entity (UNIQUE + check-first), admin claim review/approve/reject operator routes + audit |
-| P3 | REQ-10-003 | Employer account surface: own-postings read route, packages/types/employer.ts + dual-schema pins, engine-client employer section (SessionRequiredError + nc-employer-session), login/register pages, session-gated shell, postings/overview conversion (talent stays mock) |
-| P4 | REQ-10-004 | Self-serve posting management: D-091 shared consume_posting_entitlement helper + admin adoption (no drift), employer create/edit/publish/close routes, PostingManager write actions |
-| P5 | REQ-10-005 | Self-serve checkout + admin overview: employer checkout + entitlement view + own-session mock-complete through the REAL webhook path, pricing CTAs → employer-login path, admin network overview sections |
-| P6 | — | Final review + audit + milestone ship (v0.9.6 = milestone release) |
+| P1 | REQ-11-001 | Placement store + evidence ledger: placements/ module (PlacementRow + PlacementEventRow global hash chain, partial UNIQUE active guard), the D-099 matrix + event vocabulary in base.py, the ONE transactional transition_application (flush-then-hash-then-commit), main.py wiring — zero web changes |
+| P2 | REQ-11-002 | Application state machine: employer per-target routes (G-311 gate order: 401 → 403-claim → 403-cross-entity → 409), learner withdraw (D-043 stack), placements_admin operator lane (generic transition + revoke + the R-80 re-hire), G-319 pin split |
+| P3 | REQ-11-003 | Placement reporting: admin overview (distinct learners, by_employer, by_cohort_month), per-employer placement view, placement.ts wire types + engine-client placements section, /employer/applications page + overview placements section replacing the mock block |
+| P4 | REQ-11-004 | Audit export: the self-contained JSON + summary-from-same-JSON, methodology with the three pilot gaps, determinism rules, admin web placements block + export links, the full-chain E2E proof |
+| P5 | REQ-11-005 | Learner visibility: GET application-status read, job-detail status panel + placement confirmation, badge honesty |
+| P6 | — | Final review + audit + milestone ship (v0.10.6 = milestone release) |
 
-**Wave order (binding): principals before claims before surface before management before monetization.** P1 builds the module everything else composes (store + KDF + session gate — P2's claim route authenticates through it, P3's surface gates on it, P4/P5 parameterize it). P2 precedes P3 because the dashboard's claimed-entity profile and claim-pending states need decided claims to exist. P3 precedes P4 because the postings page conversion consumes the own-postings read route and the P4 mutations wire into the converted page. P4 precedes P5 because checkout's buyer = the session's claimed, managing entity and the upgrade CTA targets the surface P4 completed. Each phase is a vertical slice: store/schema → routes → web wiring → tests green in the same wave → ship.
+**Wave order (binding): ledger before machine before reporting before export before visibility.** P1 builds the store + chain every later phase composes (P2's transitions append to it in one transaction; P3's counts read the rows it writes; P4's export embeds the chain it maintains; P5's panel renders the events it records). P2 precedes P3 because reporting counts placements that only the hired transition creates — a report over an un-exercised machine proves nothing. P3 precedes P4 because the export's summary block is the D-107 computation (one truth source — the summary is generated from the same JSON) and the admin web block consumes both the overview and the export. P4 precedes P5 by requirements priority (REQ-11-004 critical ships before REQ-11-005 medium; no dependency runs the other way — the learner panel composes only P1/P2 machinery). Each phase is a vertical slice: store/schema → routes → web wiring → tests green in the same wave → ship.
 
-**Binding contracts:** clarify decisions D-086..D-097 (PROJECT.md) and research conclusions R-55..R-66 (RESEARCH.md) are design contracts; this plan operationalizes them, never re-litigates. Module layout is decided (ARCHITECTURE v0.10): `ai_service/employers/{__init__,base,store,passwords,claim_evidence}.py` — no service.py; `api/employers.py` + `api/employers_admin.py`; `tests/employers/`.
+**Binding contracts:** clarify decisions D-099..D-112 (PROJECT.md) and research conclusions R-67..R-80 (RESEARCH.md) are design contracts; this plan operationalizes them, never re-litigates. Module layout is decided: `ai_service/placements/{__init__,base,store}.py` — NO service.py (D-112/R-74 — routes compose the store via `app.state` DI); routes: the applications section of api/employers.py, learner routes in api/marketplace.py, `api/placements_admin.py`; `tests/placements/`; `packages/types/placement.ts`.
 
-**Environment facts (probe-verified, R-55..R-66):** scrypt is stdlib in the shipped venv (3.11.2), ~47 ms/hash at N=2^14/r=8/p=1, 16 MiB working set, default maxmem admits it — never pin maxmem below ~17 MiB (R-55); require_admin extract→verify→return shape at api/marketplace_admin.py:46-85, the 422 scrubber redacts only `date_of_birth` today (main.py:398-424, pii_fields line 401 — open-risk-3) (R-56); the 8th-store recipe fully specified by billing/store.py, bare `employer` table taken by marketplace/store.py:144 (R-57); create_posting gate order + the 402 dict's hardcoded posts_used=0/posts_limit=0 in BOTH arms (marketplace_admin.py:157-251) (R-58); billing_admin.create_checkout source mechanics incl. unique-pending placeholder + G-310 URLs (billing_admin.py:77-146) + the admin mock-complete path (152-227) (R-59); the four main.py wiring sites (lifespan ~182-190, CORS allow_headers line 341, inline router mounts 366-389, Settings-int knob shape) (R-60); web census — engine-client.ts section order (employer appends beside billing at ~717), adminToken() wrapper at 759-767, the pins.test.ts billing.ts block 205-231 + "Contact Sales" pin 250, NO login page in any route group (R-61); moderation page + entitlement-panel locked-state pattern (R-62); both throttle precedents (identity _SubmitRateLimiter 97-116, sandboxes _check_global_create_rate 123-137, reset-fixture pattern tests/marketplace/conftest.py:123-131) (R-63); tests/billing/ layout + state-injection make_client fixture (test_entitlement_enforcement.py:28-59) (R-64); seeded employer websites are example.com placeholders → evidence match=false corpus-wide, stdlib urlsplit suffix-match normalization (R-65); zero new deps, zero workspace changes, two .env.example knobs (R-66).
+**Environment facts (probe-verified, R-67..R-80):** the hash covers the row's own autoincrement id → the append must be flush-then-hash-then-commit inside one Session, ALL appends funneling through the one transition_application (R-70; decide_claim is the all-or-nothing template employers/store.py:600-652; the ledger must have NO delete path — INTEGER PRIMARY KEY reuses max+1 if the top row is deleted; verification is O(n) sha256 over tiny rows); the matrix precedent is billing's `_VALID_TRANSITIONS` with empty-tuple terminals (billing/store.py:84-90; the 409-matrix test trio tests/billing/test_store.py:400-418; zero migration — existing rows are all `submitted`, marketplace/store.py:211); the shared-DB multi-engine topology is shipped (8 stores, identical pragmas; global SQLModel metadata means create_all on any engine creates every registered table, employers/store.py:400; cross-module import is family-sanctioned employers/base.py:39; NO cross-family foreign keys — G-302 ID references at read); export determinism needs pinned orderings + total generated_at exclusion + float absence (R-73; the list_postings ordering discipline marketplace/store.py:940-948); main.py wiring sites verified (lifespan getattr-guard 182-190/195-200, close() in the finally 335-336, routers beside the employers block 400-411, CORS already carries Authorization 357, G-11 admin boot warning 251-256, deps.py:98); gates verified (require_employer_session employers.py:173-191, _require_claimed :467-484, _own_posting_or_404 :487-503, per-target route idiom :635/:687, provenance `"account:{id}"` :792; learner stack marketplace.py:46-52 → :358 → :359 with window :66-76, `_APPLY_TIMES` :58, cap :63; operator lane employers_admin.py:47 + OPERATOR :54, guard marketplace_admin.py:62-85); web rails verified (engine-client sections — SessionRequiredError :126-131, ClaimRequiredError :136, parseError :146, placements section appends after employer billing :1114; pins.test.ts employer dual-schema block :267-374 + G-319 block :376+; the four surfaces — employer-overview-client.tsx :162/:190-230 real vs mock block :335-372 labelled :351, job-detail-client.tsx apply :95-115 + EngineError 409/404 :103-105 + confirmation :253, moderation page :3/:35 → employer-network-panel.tsx :56 + adminToken/locked-state :28-40); test templates verified (make_client state-injection tests/marketplace/conftest.py:80-120; conftest resets :123-131 + tests/employers/conftest.py:31-33; partial-index sqlite_master pin test_claims_store.py:75-88; gate pins test_postings_write.py:225-234/:315 + test_marketplace_api.py:188; counts-only pin test_postings_read.py:216); two WAL facts (insert_application :873-901 never touches status post-creation; the tamper test's second engine sees the mutation only after commit); three clocks, three serialization rules (start_date date-only ISO YYYY-MM-DD with cohort month `strftime("%Y-%m")`; created_at naive-stored re-labeled via `_as_utc` marketplace/store.py:263-267 — `isoformat()` emits +00:00 for aware, nothing for naive, so the chain pins ONE normalization; generated_at export-only; learner_id is an opaque G-5 handle the 422 scrubber's pii_fields main.py:439 never sees).
 
-**Verification commands (phase gates — the repo's own scripts, R-66):**
+**Verification commands (phase gates — the repo's own scripts):**
 
 - `pnpm lint` (turbo lint — eslint across all TS workspaces) and `pnpm ai:lint` (ruff on ai-service)
-- `pnpm typecheck` (turbo typecheck — tsc workspaces) and `pnpm ai:typecheck` (mypy — zero new overrides, the D-086 passlib rejection holds)
-- `pnpm ai:test:fast` (FAST=1 scripts/test.sh — `-m "not real_server and not userns"` per D-063; tests/employers/ joins the fast lane)
+- `pnpm typecheck` (turbo typecheck — tsc workspaces) and `pnpm ai:typecheck` (mypy — zero new overrides; stdlib-only, D-112 keeps the D-086 regime intact)
+- `pnpm ai:test:fast` (FAST=1 — `-m "not real_server and not userns"` per D-063; tests/placements/ joins the fast lane)
 - `pnpm web:test` (node:test incl. pins.test.ts) + `pnpm cli:test` (unchanged surface, regression guard)
 - `pnpm --filter web build` (static export, D-039 unchanged) on web-touching phases (P3, P4, P5)
 
-**NFR note:** this is a Feature milestone — no purity gate; `feat:` commits are expected and scoped to ai_service/employers/, api/employers*.py + the D-091 helper, config.py/main.py wiring, tests/employers/, packages/types/employer.ts, the employer web surface, and the admin overview/pricing CTA surfaces.
+**NFR note:** this is a Feature milestone — no purity gate; `feat:` commits are expected and scoped to ai_service/placements/, api/placements_admin.py + the employers.py/marketplace.py route sections + deps.py/main.py wiring, tests/placements/, packages/types/placement.ts, the employer/job-detail/admin web surfaces.
 
-**Secrets policy (binding):** no new secrets this milestone — AI_ADMIN_TOKEN stays env-only (D-014); employer passwords are user data: stored only as self-describing scrypt hashes (D-086), never logged, never returned, never echoed in 422s (pii_fields fix, R-56); session tokens stored ONLY as sha256(token) (D-087 — a DB-file leak yields nothing usable); tests use throwaway credentials against tmp_path DBs; no credential value appears in any committed file, log line, or release asset.
+**Secrets policy (binding):** no new secrets this milestone — AI_ADMIN_TOKEN stays env-only (D-014); the placements admin lane inherits require_admin's fail-closed behavior + the G-11 boot warning free (R-74); the export carries no credentials and no identity PII (learner_id is an opaque allowlisted handle, R-79 — name/email/DOB are never stored, identity/base.py:25-33); tests use tmp_path DBs with no credential values; no secret appears in any committed file, log line, or release asset.
 
 ---
 
-## Phase 1: Employer Auth Foundation (REQ-10-001)
+## Phase 1: Placement Store + Evidence Ledger (REQ-11-001)
 
-**Goal:** The employers module exists and is proven: 4-table store + stdlib scrypt KDF + hashed server-side sessions + register/login/logout/me routes + both throttle windows + main.py wiring — all tested with the REAL KDF, zero web changes, zero new dependencies.
+**Goal:** The placements module exists and is proven: the 2-table 9th D-027 store (immutable-at-creation PlacementRow + the append-only global hash-chain PlacementEventRow), the D-099 matrix + event vocabulary in base.py, the ONE transactional transition_application with flush-then-hash-then-commit, main.py wiring — tamper-tested, fork-tested, zero web changes, zero new dependencies.
 
-### Wave 1-1: Module core — store + KDF + contracts (backend-engineer + data-engineer, sequential)
+### Wave 1-1: Module core — contracts + matrix + schema (backend-engineer + data-engineer, sequential)
 
-- **Task 1-1-01** (backend-engineer): `ai_service/employers/__init__.py` + `base.py` — pydantic contracts (D-093's list, dual-schema-pinned later in P3): `EmployerAccount` (id, email, employer_id nullable, created_at, `email_verified: Literal[False]` — UNVERIFIED per D-097, displayed as such), `EmployerClaim` (id, account_id, employer_id, status pending|approved|rejected, evidence dict, created_at, decided_by/decided_at), `RegisterEmployerRequest`/`LoginEmployerRequest` (email + password, honest validation), `TokenResponse` (token, expires_at), `EmployerMe` (account + claimed employer_id + claim state). No service.py (R-57) — routes compose the store via deps DI. (G-315: email fields are plain `str` with stdlib-only validation — non-empty, exactly one "@", non-empty domain, stripped + lowercased on normalize; pydantic `EmailStr` is BANNED — email-validator is not in the venv and adding it would be the first new dependency, breaking R-66/D-086.)
-- **Task 1-1-02** (data-engineer): `employers/store.py` — 8th D-027 store (R-57, D-095): 4 tables, all `employer_`-prefixed (bare `employer` is marketplace's EmployerRow, marketplace/store.py:144): `employer_accounts` (id PK `acct-`-style, email UNIQUE indexed, password_hash self-describing string, employer_id UNIQUE nullable-until-claim-approval, created_at), `employer_sessions` (id PK, token_hash UNIQUE — stores ONLY sha256(token), account_id indexed, created_at, expires_at = login + `SESSION_TTL_DAYS = 7` module constant), `employer_claims` (schema per D-089, built in P2 — table lands now per D-095's one-time create_all), `employer_audit_events` (auto id PK, account_id/employer_id nullable indexed, kind/name, detail JSON, operator, created_at — the BillingEventRow audit shape, billing/store.py:337-359). Mechanics mirror billing/store.py exactly: `_sqlite_connect` pragmas (WAL / synchronous=NORMAL / busy_timeout=5000 / foreign_keys=ON), `sa_type=String/JSON` portable columns, `_validate()`/`_normalize()` hooks, `_as_utc` tz re-labeling, Protocol `EmployerStore` + `SQLiteEmployerStore` pair, surfaced IntegrityError; `SESSION_TTL_DAYS` pinned by test (the PAST_DUE_GRACE_DAYS shape, D-087/D-083). Store methods: insert_account (check-first → (row, created)), get_account_by_email, mint_session (token_hash=sha256(token), expires_at=now+TTL, `now` injectable), get_session_by_token_hash (**lazy TTL — expired row reads as absent, G-306, no timer**), revoke_session (DELETE), append_audit_event, close. Tests: `tests/employers/test_store.py` — tmp_path DB, table-existence via sqlite_master (4 employer_ tables on the shared db_path), pragma pins, UNIQUE violations surfaced (duplicate email, duplicate token_hash), **token never stored raw (row holds sha256 only)**, lazy TTL with injected now (login+6d present, +8d absent — no sleeps), revoke → lookup miss.
-- **Task 1-1-03** (backend-engineer): `employers/passwords.py` — stdlib scrypt KDF (D-086, R-55): module constants `SCRYPT_N=2**14, SCRYPT_R=8, SCRYPT_P=1, SCRYPT_DKLEN=32` (**pinned by test**); per-password salt `secrets.token_bytes(16)`; stored self-describing `scrypt$16384$8$1$<salt_b64>$<hash_b64>` (params evolve without invalidating rows); verify parses params from the stored string, derives, compares via `hmac.compare_digest`; **no maxmem argument below ~17 MiB** (R-55 probe: default 32 MiB admits the 16 MiB working set; if pinned for explicitness use 33554432); module docstring records the ~50 ms/hash budget + throttle-bounded burst risk (open-risk-1). Tests: `tests/employers/test_passwords.py` — REAL KDF, no fake-hash path (D-096): hash→verify accept, wrong password reject, two hashes of the same password differ (random salt), params-pinned constants test, self-describing round-trip (old-format row with explicit params still verifies), **tests never assert hash bytes — accept/reject behavior only**.
+- **Task 1-1-01** (backend-engineer): `ai_service/placements/__init__.py` + `base.py` — pydantic contracts + constants: `TRANSITION_MATRIX` per D-099 (snake_case `submitted → in_review → interview → offer → hired|rejected|withdrawn`, forward-only with skip-forward — any non-terminal may move to any LATER stage or any terminal, terminals have empty-tuple outgoing edges, the billing/store.py:84-90 shape); `APPLICATION_STATUSES`; actor vocabulary `employer|learner|operator|system` (the `_BILLING_EVENT_KINDS` shape billing/store.py:92, D-101); event-name vocabulary per D-101 + **R-80's placement lane**: application-stage events (NO backfill — `application.submitted` is never fabricated for v0.6 rows, D-101/A-304; one event per transition: in_review/interview/offer/rejected/withdrawn/hired) + placement-level events (`placement.created` on hired, `placement.revoked` on the D-102 correction, `placement.rehired` on the R-80 operator re-hire); `PlacementRead`/`PlacementEventRead`/`EmployerApplicationSummary` response contracts (dual-schema-pinned P3 per D-110); `HireTransitionRequest {role_title, start_date}` (D-103: start_date is a pydantic `date` — never a datetime, future + past allowed, timezone-free by construction; **G-324: role_title = Field(min_length=1, max_length=200) — empty-string → 422, the house Field shape marketplace/base.py:68-71**); `GENESIS_HASH = "0" * 64` module constant (D-101, test-pinned). No service.py — routes compose the store via app.state DI (D-112).
+- **Task 1-1-02** (data-engineer): `placements/store.py` — the 9th D-027 store (D-112/R-72): tables `placement` (id PK, learner_id, employer_id, posting_id, application_id indexed, role_title, start_date stored ISO `YYYY-MM-DD` — a calendar date, no datetime coercion in its path, R-79; status `active|revoked`, created_at, decided_at) + `placement_event` (auto-increment id PK, application_id nullable+indexed, placement_id nullable, event_type, actor_type, actor_ref, payload JSON, prev_hash **UNIQUE**, hash, created_at). Bare `placement` is FREE (D-095's prefix rule was collision-driven — marketplace owns posting/employer/application, no placement table exists). D-102 semantics: role_title/start_date/decided_at/learner_id/employer_id/posting_id/application_id are set once at the hired transition and NEVER rewritten (a silent rewrite is exactly the tamper the chain detects); `status` is the ONLY mutable column with exactly one transition `active → revoked`; decided_at = the hired transition's store-stamped created_at (`datetime.now(UTC)`); the one-active-per-application guard is a **partial UNIQUE index `uq_active_placement_per_application` ON application_id WHERE status='active'** (the G-316 `uq_pending_claim_per_entity` shape, employers/store.py:161-167 — revoked rows stay in history; a re-hire after a mistaken revoke creates a fresh row). Mechanics mirror employers/store.py exactly (D-112): `_sqlite_connect` pragmas WAL / synchronous=NORMAL / busy_timeout=5000 / foreign_keys=ON, `sa_type` portable columns, `_validate()`/`_normalize()` hooks, `_as_utc` re-labeling, Protocol `PlacementStore` + `SQLitePlacementStore` pair, surfaced IntegrityError, `_constraint_error` helper; global-metadata `create_all` idempotent (checkfirst adds both tables to every existing DB at next boot — the shipped D-095 behavior, employers/store.py:398-400); NO cross-family foreign keys (employer/learner/posting/application are ID references resolved at read/export, G-302); **NO delete method and no DELETE SQL anywhere in the module** (R-70: deleting the top row makes INTEGER PRIMARY KEY reuse max+1 — chain-integrity hole; source-pinned). Canonical serialization per D-101/R-69/R-79: `_canonical_event_json` = `json.dumps({...}, sort_keys=True, separators=(",", ":"))` with created_at normalized via **always `_as_utc(dt).isoformat()` — ONE pinned normalization** (the R-79 pitfall: isoformat emits `+00:00` for aware, nothing for naive — drift between the hashing and reading paths breaks the chain on first re-read) and **no floats in payload ever** (str/int/bool/None only, R-69); `hash = hashlib.sha256` hexdigest over the canonical JSON + prev_hash. Tests `tests/placements/test_store.py`: GENESIS_HASH pinned; table existence via sqlite_master (2 tables) + the partial-index SQL pinned (the test_claims_store.py:75-88 template); pragma pins; duplicate prev_hash → IntegrityError surfaced; no-delete-path source pin; tz round-trip (naive stored, aware read, canonical form stable).
+- **Task 1-1-03** (data-engineer): the chain append + `transition_application` — D-100/R-70: `transition_application(application_id, to_status, actor_type, actor_ref, role_title=None, start_date=None)` — ONE Session on the placements engine covering both tables (R-72: the marketplace `application` row is written through it — the sanctioned D-100 deliberate exception; both tables + the status write land in ONE commit, the decide_claim all-or-nothing precedent employers/store.py:634-652 — the two-commit alternative's crash window voids the tamper-evidence the milestone sells): get_application (marketplace/store.py gains ONLY this point read, the get_posting shape :578-584 — insert_application and every other marketplace seam unchanged) → matrix validation (module InvalidTransition → 409 at routes) → update `application.status` → read chain head (`ORDER BY id DESC LIMIT 1`) → construct the event row with prev_hash=head → **`session.flush()` to obtain the autoincrement id → compute hash → set the column → on hired: create the PlacementRow (decided_at = this transition's created_at; role_title/start_date REQUIRED, D-103) + append `placement.created` with placement_id set → `session.commit()`** — flush-then-hash-then-commit, and ALL ledger appends funnel through this one method (a second append path races prev_hash; the UNIQUE backstop catches it as a lost event). Column ownership stated in the module docstring (R-78): marketplace insert_application (:873-901) writes status once at creation; the placements store is the ONLY post-creation writer of application.status — no route or future store adds a second writer outside the one-transaction discipline. Store methods: `verify_chain` (recompute the walk from GENESIS_HASH → head; O(n) sha256 over tiny rows — milliseconds at pilot scale, R-70), `get_placement`, `get_application_events` (id-ordered), `list_active_placements`, `revoke_placement` (the one status-only mutation + `placement.revoked` event, one transaction, operator-only by route), `rehire_placement` (R-80: fresh PlacementRow + `placement.rehired` event WITHOUT touching the application's terminal status — revoked rows don't match the partial WHERE, the exact G-316 property employers/store.py:159-167). Tests: chain-walk verification green after N appends; hired → PlacementRow + both events chained (application_id event + placement_id event); **tamper test** — direct row mutation via a second engine on the same file (mutation commits before the verification walk reads, R-78 WAL snapshot isolation) → verify_chain fails; **fork test** — a second row claiming the same prev_hash → IntegrityError surfaced; **concurrent-transition arm** (the test_concurrent_consumes_one_post_left shape, tests/billing/test_store.py:335): two sessions transition the same application → one winner commits, the loser surfaces IntegrityError/InvalidTransition — never two events on one prev_hash; revoke → status revoked + event; rehire after revoke → fresh active row + three-event ledger sequence (hired, placement.revoked, placement.rehired).
 
-### Wave 1-2: Auth routes + throttles + main.py wiring (backend-engineer)
+### Wave 1-2: main.py wiring + deps + conftest (backend-engineer)
 
-- **Task 1-2-01** (backend-engineer): `api/employers.py` — `require_employer_session` dependency (D-090, R-56: the require_admin extract→verify→return shape, single-header `Authorization: Bearer <token>` via partition + scheme check; sha256(token) hash-lookup; **401** missing/expired/unknown — credential failure; **403** reserved for cross-entity authorization; returns session + account + claimed employer_id; token namespaces cannot collide with admin tokens — one class fails the other's gate) + `deps.py` `get_employer_store` (app.state DI). Routes: `POST /v1/employers/auth/register` (email+password → scrypt hash → insert_account; duplicate email → 409 honest; account UNVERIFIED per D-097 — no learner gates ever composed on employer routes), `POST /v1/employers/auth/login` (verify → mint token → `{token, expires_at}`; bad credentials → 401 honest, no user-enumeration difference in response body beyond the 401), `POST /v1/employers/auth/logout` (revoke: DELETE row + audit event; unknown/revoked token → 401), `GET /v1/employers/auth/me` (session + account + claimed employer_id + unverified email displayed as such). Tests: `tests/employers/test_auth.py` — **register→login→me→logout flow green**; duplicate register 409; wrong password 401; logout revokes (subsequent me → 401); expired token → 401 (injected now); no-token → 401; concurrent sessions per account allowed (two logins, both me-green, one logout leaves the other alive). REAL scrypt throughout (≈2 hashes ≈100 ms/test, R-64 budget).
-- **Task 1-2-02** (backend-engineer): throttles (D-088, R-63 — both copy the proven in-tree mechanics, keyed by SUBMITTED EMAIL, never client IP): (a) per-EMAIL failed-login window — module dict[email]→timestamps, `time.monotonic()` slice-trim, **default 5 failures / rolling 15 min (900 s, window seconds parameterized — identity hardcodes 60.0) → 429 with the honest "wait" detail**; failures-only append; **successful login CLEARS the email's window**; (b) global per-min cap on login+register attempts — module `deque[float]`, while-popleft older-than-60s, `len >= settings.employer_auth_attempts_per_min` → 429, **append only after ALL checks pass (a rejected attempt never consumes budget)**. Settings knobs as plain ints (the `identity_submits_per_min` shape, R-60d): `employer_login_failures_per_window: int = 5`, `employer_auth_attempts_per_min: int = 30`; `.env.example` entries beside the AI_ADMIN_TOKEN block (commented, default-off, R-66). Tests: `tests/employers/test_throttle.py` — 5 failures → 429 with wait detail; success clears the email window; global cap → 429; rejected attempts don't consume the global budget; **both limiter module states reset via fixtures (the _reset_apply_rate_window pattern, R-63)**. (G-313: an autouse fixture in a NEW tests/employers/conftest.py clears BOTH limiter module states before/after EVERY employers test — the whole suite runs inside one 60s window and self-429s otherwise; the sanctioned deviation from billing's no-conftest layout, R-64. G-314: the global deque appends every well-formed login+register attempt — FAILED PASSWORDS COUNT; only 422-invalid bodies and the cap's own 429s are exempt, or D-088's credential-stuffing bound is void; the "rejected attempts consume nothing" test is reworded to "422-invalid consumes nothing; failed-password attempts DO count; N distinct emails inside the window → the (cap+1)-th 429s — the stuffing test". G-320a: the login route order is body-validation → global cap → per-email window → scrypt verify → failure-append — a 429'd attempt performs ZERO KDF derivations, pinned.)
-- **Task 1-2-03** (backend-engineer): main.py wiring (R-60, all four sites): (a) employer_store lifespan block directly after billing_store (~line 191, same getattr-guard) + `close()` in the finally block; (b) employers router mount beside the billing block (inline-import pattern); (c) **CORS `allow_headers` gains `"Authorization"` (main.py:341) + the `tests/api/test_cors.py` preflight pin lands in THIS task** (the E87 lesson applied before it ships — open-risk-2: without it every cross-origin employer fetch dies preflight in the two-port dev + D-038 network-mode topologies); (d) **pii_fields gains `"password"` + `"email"`** (main.py:401, R-56/open-risk-3 — a pydantic 422 on register would echo the raw password into err["input"] today) + the pin: register with an invalid body → 422 whose detail never contains the submitted password (added to tests/employers/test_auth.py). Tests: test_cors.py Authorization-preflight green; 422-echo pin green.
+- **Task 1-2-01** (backend-engineer): wiring per D-112/R-74: `deps.py` `get_placement_store` beside get_employer_store (deps.py:98); main.py lifespan getattr-guard `placement_store` directly after the employers block (main.py:195-200 template) + `close()` in the finally block (main.py:336); CORS already carries Authorization (main.py:357 — no change); the G-11 admin boot warning (main.py:251-256) covers the placements admin free. Zero new config knobs, zero .env.example changes (no new throttle — D-104 rides the existing window; the router file + mounts land with its first routes in P2, the main.py:400-411 pattern). `tests/placements/conftest.py` NOW (D-111/G-313/open-risk-4): the make_client state-injection fixture (the tests/marketplace/conftest.py:80-120 shape — tmp_path DB, create_app, `app.state.placement_store` injected, hermetic zero-network by construction — no MockTransport needed, no external calls exist) + the **autouse `_APPLY_TIMES` reset (tests/marketplace/conftest.py:123-131 pattern) before/after EVERY placements test — the withdraw route rides that limiter in P2; without the reset the suite self-429s (the G-313 lesson applied before it ships)**.
 
 ### Wave 1-3: P1 security review + phase gate (security-auditor + lead-developer)
 
-- **Task 1-3-01** (security-auditor): auth-core review — scrypt params/compare_digest discipline (constants pinned, self-describing rows), session tokens hashed-at-rest (sha256 only — DB leak yields nothing, D-087), throttle windows (email-keyed never IP, both knobs honored), 401 vs 403 semantics (D-090), CORS Authorization pin present, 422 scrub pinned, revoke-on-logout. Findings recorded; P0s fixed in-phase.
-- **Task 1-3-02** (lead-developer): P1 phase gate — `pnpm ai:lint` + `pnpm ai:typecheck` (zero new mypy overrides) + `pnpm ai:test:fast` + `pnpm web:test` + `pnpm cli:test` green (existing suites unaffected — the module is additive, marketplace/billing/identity untouched); D-097 discipline check (no require_verified_age/allowlist composed on any employer route); test counts recorded.
+- **Task 1-3-01** (security-auditor): ledger review (P1 scope, D-111's "an audit ledger nobody has tried to break is theater"): canonical serialization pinned to ONE normalization (the hashing/reading drift pitfall caught by tamper tests), GENESIS pinned, UNIQUE(prev_hash) fork backstop real (IntegrityError surfaced never swallowed), flush-then-hash-then-commit with a single append funnel (no second writer), no-delete-path pinned, partial-unique active-placement guard emitted by create_all (G-316 shape), actor vocabulary closed, no floats in payload, no PII in payload fields. Findings recorded; P0s fixed in-phase.
+- **Task 1-3-02** (lead-developer): P1 phase gate — `pnpm ai:lint` + `pnpm ai:typecheck` (zero new mypy overrides — stdlib only) + `pnpm ai:test:fast` + `pnpm web:test` + `pnpm cli:test` green (additive module — marketplace/billing/employers suites untouched); the D-100 discipline check (one transition_application, no second status writer, no second append path); test counts recorded.
 
-## Phase 2: Employer Entity Claim (REQ-10-002)
+## Phase 2: Application State Machine (REQ-11-002)
 
-**Goal:** An authenticated account claims an existing EmployerRow entity; claims are pending with recorded advisory evidence; admin approve/reject activates ownership (one account : one entity); the operator queue and audit trail are real.
+**Goal:** The hiring pipeline is live: employers drive per-target transitions on their own claimed-entity applications (G-311 gate order, audit-logged, ledger-chained in the same transaction), learners withdraw their own, the operator lane transitions/revoke/re-hire with provenance — every matrix arm tested, the G-319 pin split enforced.
 
-### Wave 2-1: Claim core — evidence + store + route (backend-engineer + data-engineer)
+### Wave 2-1: Employer application routes + G-319 pin split (backend-engineer)
 
-- **Task 2-1-01** (backend-engineer): `employers/claim_evidence.py` — stdlib registrable-domain normalization (R-65): `urllib.parse.urlsplit(website).hostname` lowercased ("https://example.com/openai" → "example.com"), email domain after the last "@" lowercased, `match` = simple SUFFIX match (equal, or one endswith "." + other) — no PSL library, no tldextract (zero-dep discipline); module docstring records the multi-label-suffix over-match as acceptable for an advisory signal; evidence shape per D-089: `{account_email_domain, entity_website_domain, match}`. Tests: `tests/employers/test_claim_evidence.py` — normalization table (scheme/path stripped, case-folded), match true on same registrable domain, false on the example.com corpus (R-65).
-- **Task 2-1-02** (data-engineer): store claim methods (the insert_application check-first precedent, marketplace/store.py:341-347): `insert_claim` (**one PENDING claim per entity → created=False/409; one APPROVED owner per entity; rejection frees the entity for a new claim**), `decide_claim` (approve → set `employer_accounts.employer_id` — the UNIQUE one-account-one-entity constraint — + decided_by/decided_at + audit append; reject → decided_by/decided_at + audit append), `list_claims` (status filter, consume-free read path for the admin queue), `get_claim`. Tests: `tests/employers/test_claims_store.py` — second pending claim on an entity rejected; claim after rejection succeeds; approve sets employer_id + writes an audit row; second approve by another account → IntegrityError surfaced (one approved owner); decided_at/decided_at provenance pinned. (G-316: the pending-arm uniqueness is TOCTOU on check-first alone — `employer_claims.__table_args__` gains a partial UNIQUE index `uq_pending_claim_per_entity` on employer_id `sqlite_where status='pending'` (SQLite partial index, emitted by create_all — the D-095 one-time path); insert_claim keeps the check-first 409 fast-path and SURFACES the IntegrityError as the same honest 409 under race; the approved-owner arm is already structurally sound via employer_accounts.employer_id UNIQUE. Pinned: the partial index exists in sqlite_master; a raced second pending insert → 409, never a duplicate pending row.)
-- **Task 2-1-03** (backend-engineer): `POST /v1/employers/claims {employer_id}` (session-gated via require_employer_session): entity must exist in the marketplace store (404 unknown — claims target the v0.6 ingested EmployerRow data), account must not already hold an entity (409 honest — one account : one entity), evidence computed AT CLAIM TIME + stored as provenance JSON on the claim row, response = pending claim with evidence. **Auto-approval is deferred: the operator decision activates (D-089 — without email verification the match is forgeable; A-304: never present unverified as verified).** Tests: `tests/employers/test_claims.py` — claim → pending with the exact evidence dict; unknown entity 404; already-owner 409; second pending claim on the same entity 409; unauthenticated 401.
+- **Task 2-1-01** (backend-engineer): api/employers.py gains `GET /v1/employers/applications?status=` (own claimed-entity pipeline — session → claimed → applications resolved through own postings via a new in-pattern marketplace grouped read, the count_applications_by_posting discipline store.py:915-932, never per-row N+1; the `EmployerApplicationSummary` contract with **learner_id visible per the G-319 supersession, D-105: application-scoped reads expose learner_id ONLY for applications on the session's own claimed-entity postings**) + the per-target action routes `POST /v1/employers/applications/{application_id}/in-review | /interview | /offer | /reject | /hire` (the per-target idiom employers.py:635/:687 — the matrix stays OUT of request bodies; hire body `{role_title, start_date}` per D-103, both REQUIRED; **G-324: role_title min_length=1/max_length=200 — the empty-string 422 arm pinned beside the missing-fields arm**). Gate order G-311 (D-105/R-75): **401** (require_employer_session employers.py:173-191) → **403** claim (_require_claimed :467-484) → **403** cross-entity (fetch application → posting → `posting.employer_id != claimed` — the _own_posting_or_404 shape :487-503 applied through the application's posting) → **409** transition (never a 409 before a 403). Every route calls the ONE transition_application with `actor_type="employer"`, `actor_ref=f"account:{account.id}"` (the :792 provenance shape) + appends an `employer_audit_events` row (the D-089 one-queryable lane). Tests `tests/placements/test_employer_transitions.py`: gate-order pins (no token → 401, unclaimed → 403, foreign application → 403 — never a 409 first; the test_postings_write.py:225-234/315 pin shape); matrix 409 arms (every illegal move: backward `offer → in_review`, terminal-source `hired → anything`/`rejected → anything`/`withdrawn → anything`); skip-forward arms legal (`submitted → hired` fast-track, `submitted → interview`, `in_review → reject` — R-71); hire → 201 + PlacementRow + chained events + audit row; hire without role_title/start_date → honest 422 with the D-103 required-fields detail; **G-324 arm: role_title="" → 422**.
+- **Task 2-1-02** (backend-engineer): the **G-319 pin split** (R-77/D-105, binding): the own-postings LIST stays counts-only — tests/employers/test_postings_read.py:216 green UNCHANGED (the v0.10 boundary holds there); learner_id appears ONLY on application-scoped responses for own-posting applications; cross-entity → 403 with NO application data (anti-enumeration preserved). Pins in test_employer_transitions.py: the list response carries no learner identifiers; the application-scoped GET carries learner_id on own postings; a foreign application's transition/list never returns any application payload.
 
-### Wave 2-2: Admin claim review routes + security review (backend-engineer + security-auditor)
+### Wave 2-2: Learner withdraw + operator lane incl. the R-80 re-hire (backend-engineer)
 
-- **Task 2-2-01** (backend-engineer): `api/employers_admin.py` — `require_admin` imported from marketplace_admin (the billing_admin.py:27 precedent, D-094): `GET /v1/employers/admin/accounts` (email, claimed entity, created_at, unverified marker), `GET /v1/employers/admin/claims` (queue: status, evidence, domain-match signal, decided state), `POST /v1/employers/admin/claims/{id}/approve`, `POST .../claims/{id}/reject` (set decided_by/decided_at + append employer_audit_events per D-089), `GET /v1/employers/admin/audit` (queryable trail). Fail-closed 403 on no/missing/invalid token (the R-56 matrix). Tests: `tests/employers/test_claims_admin.py` — **approve → account.employer_id set + audit row + claim approved**; reject frees the entity (a new claim from another account succeeds); decided twice → 409 honest; 403 fail-closed on all five routes; audit query returns claim decisions with operator provenance.
-- **Task 2-2-02** (security-auditor): claim-evidence review — evidence is advisory, never displayed as verification (A-304; the example.com corpus makes match=false corpus-wide, R-65/open-risk-6); one-account-one-entity UNIQUE enforced at the store (approve path surfaces IntegrityError, never silently overwrites); claim decisions audit-complete (decided_by/decided_at + events); the 409 paths don't leak account existence beyond the authenticated principal. Findings recorded; P0s fixed in-phase.
+- **Task 2-2-01** (backend-engineer): api/marketplace.py gains `POST /v1/marketplace/applications/{application_id}/withdraw` body `{learner_id}` (D-104): the **D-043 composition unchanged** — `_enforce_allowlist` (marketplace.py:46-52) → `require_verified_age(18)` (:358) → `_check_apply_rate` (:359; window :66-76, `_APPLY_TIMES` :58, cap 5/rolling-60s :63 — the EXISTING window, no new throttle knob); 403 when the application is not the caller's, 409 when terminal (D-099: `withdrawn` is learner- or operator-triggerable, NEVER an employer session — employers reject instead); calls the same transition_application with `actor_type="learner"`; composes the placements store via app.state DI (deps.py). **G-323 (binding): the apply route's idempotent arm gains a terminal-state guard** — a returned application in `withdrawn`/`rejected`/`hired` → 409 `{"reason": "application_terminal", "status": …}` (the posting_not_published 409 shape, marketplace.py:366-373), never a 200 "applied" confirmation; no new application row (the unique key stands); recovery is visibility (G-322's mine-read + status panel), not resurrection. Tests `tests/placements/test_learner_withdraw.py`: unallowlisted → 403, unverified → 403, foreign application → 403, own+submitted → 200 `withdrawn` + ledger event actor learner, terminal → 409; **apply → withdraw → re-apply → 409 application_terminal (never a 200)**; the conftest reset proves no self-429 (5 withdraws inside the window → the 6th 429s honestly, reset between tests).
+- **Task 2-2-02** (backend-engineer): `api/placements_admin.py` (D-106): prefix `/v1/placements/admin`, `require_admin` IMPORTED from marketplace_admin (the billing_admin.py:27 import precedent, employers_admin.py:47 — token namespaces cannot collide, D-090); router mounts in main.py beside the employers block (main.py:400-411). Routes: `POST /v1/placements/admin/applications/{application_id}/transition` `{to, role_title?, start_date?}` — the generic operator remediation route validated against the SAME D-099 matrix (role_title/start_date required iff `to=hired`); **G-327 (binding): `to` is a pydantic Literal of the seven D-099 statuses — unknown value → 422 (body validation), matrix-illegal known value → 409 InvalidTransition; the route never sees a status outside the vocabulary (no 500s, no silent acceptance; test arm: garbage `to` → 422)**; `actor_type="operator"`, `OPERATOR = "operator"` route-level provenance (employers_admin.py:54 — no per-operator accounts, D-094); the operator can drive ANY matrix-legal transition including `withdrawn` on a learner's behalf (remediation with provenance, the D-083 lane). `POST /v1/placements/admin/placements/{placement_id}/revoke` (D-102: the one `active → revoked` correction). **THE R-80 RE-HIRE ROUTE (pinned explicitly): `POST /v1/placements/admin/placements/by-application/{application_id}/re-hire` `{role_title, start_date}`** — after the first hire the application is terminal (`hired → hired` is a 409 on every matrix-validated surface — the R-80 coherence gap); the re-hire creates the FRESH PlacementRow + appends `placement.rehired` (actor operator) WITHOUT touching the application's terminal status — the ledger reads hired → revoke → rehire as three events, never fabricating a second application transition (the rejected matrix-amendment and revoke+reapplication shapes stay rejected per R-80); structurally safe because revoked rows don't match the partial WHERE status='active' (the exact G-316 property). **G-326 (binding): the re-hired PlacementRow's `decided_at` = the re-hire event's store-stamped created_at (D-102's `datetime.now(UTC)` stamp rule extended) — stated in the module docstring + asserted in the revoke→re-hire test arm.** Reporting/export reads land P3/P4. Tests `tests/placements/test_admin_lane.py`: fail-closed 403 on every route (no/missing/invalid token — the R-56 matrix); generic transition every legal arm + the 409 arms + **garbage `to` → 422 (G-327)**; revoke → placement revoked (→ excluded from counts, asserted P3); **revoke → re-hire → fresh active placement + the three-event ledger sequence pinned + decided_at = the re-hire event's stamp (G-326) + second active placement on the same application without revoke → the IntegrityError surfaced as an honest 409**.
 
-## Phase 3: Employer Account Surface (REQ-10-003)
+### Wave 2-3: P2 security review + phase gate (security-auditor + lead-developer)
 
-**Goal:** The employer surface is real: own-postings read route feeding a converted dashboard (login/register pages, session-gated shell, own-postings lifecycle view, real counts), wire types dual-schema-pinned, 401 → honest logged-out state — talent pages stay mock, honestly labeled.
+- **Task 2-3-01** (security-auditor): gate + PII review (P2 scope): G-311 gate order on every transition route (401 → 403-claim → 403-cross-entity → 409, pinned); the G-319 supersession (R-79): learner_id is an opaque G-5 handle, application-scoped only, anti-enumeration preserved (cross-entity 403 carries no data); employer sessions can never withdraw (D-099); operator provenance on every admin action incl. re-hire; the audit trail answers every decision (employer_audit_events + ledger actor refs). Findings recorded; P0s fixed in-phase.
+- **Task 2-3-02** (lead-developer): P2 phase gate — `pnpm ai:lint` + `pnpm ai:typecheck` + `pnpm ai:test:fast` + `pnpm web:test` + `pnpm cli:test` green (existing marketplace/employers suites green unmodified); the R-80 coherence review recorded (placements, not applications, are the correction lane — the route shape vs D-099/D-102); test counts recorded.
 
-### Wave 3-1: Own-postings read route (backend-engineer)
+## Phase 3: Placement Reporting (REQ-11-003)
 
-- **Task 3-1-01** (backend-engineer): `GET /v1/employers/postings` (session-gated; **unclaimed account → 403 + claim-CTA detail** — the D-090 403 semantics; claimed → own postings only, resolved from the marketplace store by the session's employer_id, status facets draft|published|closed, **per-posting applicant_count from the applications table** — the D-092 overview data source). Reuses marketplace store via deps DI; no new tables. Tests: `tests/employers/test_postings_read.py` — own-entity rows only (a second claimed employer's postings never appear); unclaimed 403 with claim-CTA; status facets pinned (counts per status); applicant_count matches seeded applications; no-token 401. (G-319: the response is a NAMED pydantic contract in employers/base.py — `OwnPostingSummary` (PostingSummary reused + applicant_count) + the facets/list response — so the MH-3a dual-schema pin is schema↔schema, not a prose payload; the counts ride a new in-pattern marketplace store read `count_applications_by_posting(posting_ids) -> dict[str, int]`, never a per-posting N+1; employer-facing responses expose applicant COUNTS ONLY — learner identifiers NEVER appear in any /v1/employers/* response, PII boundary, security-auditor P3 scope.)
+**Goal:** The guiding outcome is measurable: distinct-learner counts computed from rows at query time (per employer, per start-date cohort month, cumulative toward 1,000), the per-employer placement view live, wire types dual-schema-pinned, the employer surfaces converted (the applications page + the overview placements section replacing the mock block).
 
-### Wave 3-2: Wire types + engine-client employer section (frontend-engineer)
+### Wave 3-1: Reporting reads (backend-engineer)
 
-- **Task 3-2-01** (frontend-engineer): `packages/types/employer.ts` (the billing.ts precedent, R-61/R-66) — EmployerAccount, EmployerClaim (+evidence), token/me shapes, own-postings list response (PostingSummary REUSED from marketplace.ts:99-117, never duplicated; entitlement view reuses the v0.9 shapes per D-093) + `export * from './employer'` in index.ts. Dual-schema pins in `apps/web/tests/pins.test.ts` (G-108 discipline; the billing.ts pin block 205-231 is the template): **the employer.ts pin block asserts every field field-for-field against ai_service/employers/base.py's pydantic contracts — both schemas**.
-- **Task 3-2-02** (frontend-engineer): `engine-client.ts` employer section (appended beside billing, R-61 — ONE client module, no fork): `registerEmployer`/`loginEmployer`/`logoutEmployer`/`getEmployerMe`/`claimEmployerEntity`/`listOwnEmployerPostings` + the `nc-employer-session` sessionStorage wrapper (the adminToken() 759-767 pattern: window-guarded get/set/clear; tab-scoped bounds XSS exposure — open-risk-4, documented in surface copy) + **`SessionRequiredError` — the 401 discrimination arm joining the parseError chain (no 401 arm exists today, R-61); 401 → honest logged-out state, NEVER a retry loop** + logout clears storage AND calls the revoke route + AbortController on every fetch (A-406). Tests: web fetch-stub tests (the billing-entitlement.test.ts template) — 401 → SessionRequiredError; token attached as Authorization header on every employer fetch; logout clears storage + fires revoke.
+- **Task 3-1-01** (backend-engineer): reporting per D-107 — counts computed from rows at query time, NEVER denormalized counters (G-302/G-306): `GET /v1/placements/admin/overview` → `{total_active_placements, distinct_learners_placed, guiding_goal: 1000, by_employer: [{employer_id, count}], by_cohort_month: [{month, count}]}` — **the guiding-outcome metric is DISTINCT LEARNERS with ≥1 active placement, all-time cumulative toward 1,000 (a learner placed twice counts ONCE — the outcome's noun is learners, PROJECT.md line 7); revoked excluded from every count (D-102); cohort month = `strftime("%Y-%m")` over start_date (D-103/R-79 — employment-start month, not hired month, not application month)**; by_employer ordered count desc then employer_id, by_cohort_month month ascending (R-73); joins through existing stores (employer identity via employer_accounts/EmployerRow, posting via postings, learner via application rows); batched grouped reads (the count_applications_by_posting discipline store.py:915-932 — never per-row N+1). Plus `GET /v1/employers/placements` — the per-employer placement view (session-gated; own claimed-entity hired applications with role_title/start_date, honest empty state; 403 + claim-CTA unclaimed; 401 no token) — D-109 surface 2's data source. Tests `tests/placements/test_reporting.py`: distinct-learner rule (one learner, two employers, two placements → distinct_learners_placed=1, total_active_placements=2); cohort bucketing (two starts in one month → one bucket; a future-dated start lands in its own month); revoke exclusion (revoked → gone from every count; a learner whose only placement was revoked → back to 0); per-employer view own-rows-only + cross-entity 403 + unclaimed 403.
 
-### Wave 3-3: Pages — login/register + dashboard conversion (frontend-engineer)
+### Wave 3-2: Wire types + engine-client placements section (frontend-engineer + data-engineer)
 
-- **Task 3-3-01** (frontend-engineer): `/employer/login` + `/employer/register` pages (greenfield client pages, R-61 — no login page exists in any route group; existing Input/Button/Card primitives, no design-token work): honest states throughout — 401 invalid-credentials, 409 duplicate email, 429 throttle wait, 422 validation (never echoing the password — server-side pinned already); register success → logged-in dashboard; login stores the session token. Tests: fetch-stub render tests — loading/error/empty honest, 429 copy, register→login handoff. (G-312: fetch-stub + source-pin discipline — no render harness, per D-059.)
-- **Task 3-3-02** (frontend-engineer): employer dashboard conversion: postings page drops the `jobs` mock import + PostingManager's derived mock statuses/applicants (components/employer/posting-manager.tsx:29-37) → own-postings read lifecycle view (draft → published → closed visible, applicant counts real; write actions land P4); overview page drops `candidates, employers` mock imports + inline METRICS/PIPELINE constants (page.tsx:10, 18-74) → real active-postings count + per-posting applicant counts from listOwnEmployerPostings + claimed-entity profile via the existing public GET /v1/marketplace/employers/{id} (enrichment retained); **talent-match/placement metrics STAY mock-labeled (D-092 — no backend computes them); talent search + candidate profile pages keep their mock imports unchanged (no candidate backend exists — honest out-of-scope)**. Session-gated shell: no/expired session → honest logged-out state with login CTA (SessionRequiredError path), never a retry loop; claim-pending state visible (claim submitted, awaiting review). Tests: web render tests — logged-out state, claim-pending state, postings lifecycle render, real counts; **pins: postings/overview pages grep-clean of the removed mock imports; talent pages' mock imports retained**; `pnpm --filter web build` (static export) green. (G-312: "render tests" = the D-059/E87 discipline — fetch-stub tests over engine-client employer functions + SOURCE pins for component honest states (logged-out/claim-pending/loading/error branches present in source, the pins.test.ts discipline); NO jsdom/happy-dom render harness exists in-tree and none may be added this milestone.)
+- **Task 3-2-01** (frontend-engineer, data-engineer dual-schema-sync): `packages/types/placement.ts` (D-110 — the fourth types module, the employer.ts precedent): ApplicationStatus union (regex-pinned the D-093 status-union way), Placement, PlacementEvent, EmployerApplicationSummary, transition request/response shapes, HireTransitionRequest, PlacementOverview (+ PlacementExport added with the export shapes in P4) + `export * from './placement'` in index.ts. Dual-schema pins in `apps/web/tests/pins.test.ts` (the employer.ts block :267-374 template): **every field asserted both sides against `ai_service/placements/base.py`** — lead-developer reviews the pins (the G-108 discipline from day one).
+- **Task 3-2-02** (frontend-engineer): engine-client.ts **placements section** (D-110 — appended after employer billing :1114; ONE client module, no fork): listEmployerApplications, the employer transition functions (inReview/interview/offer/reject/hire with `{role_title, start_date}`), listEmployerPlacements, getPlacementOverview (learner status/withdraw + export functions land P5/P4 with their routes) — every fetch AbortController-equipped (A-406), 401 → SessionRequiredError REUSE (engine-client.ts:126-131), 403 claim → ClaimRequiredError reuse (:136), **NO new error classes** (403 cross-entity renders from EngineError.status). Tests: web fetch-stub tests (the billing-entitlement.test.ts template) — 401 → SessionRequiredError, token attached on every fetch, transition dispatch with the exact body.
 
-## Phase 4: Self-Serve Posting Management (REQ-10-004)
+### Wave 3-3: Employer web surfaces (frontend-engineer)
 
-**Goal:** Employers manage their own postings end-to-end: the v0.9 entitlement gate extracted ONCE into a shared api/ helper, both principal gates composing it with byte-identical wire contracts; employer create/edit/publish/close routes; the converted PostingManager gains write actions with honest 402/403 states.
+- **Task 3-3-01** (frontend-engineer): D-109 surface 1 — the NEW `/employer/applications` page (beside postings/login/register/billing/talent): the hiring pipeline — own applications with status badges (the seven D-099 states), per-target transition CTAs, the hire form `{role_title, start_date}` (a date input, future dates allowed — D-103), learner_id shown (own applicants, G-319 supersession); honest pending/empty/403-claim states (the A-406 board-client discipline); session-gated shell (SessionRequiredError → honest logged-out state, never a retry loop). Tests: web fetch-stub + source pins (the G-312 discipline — no render harness): loading/error/empty/claim states present in source, status badge per status, hire form dispatches the transition, withdraw NEVER offered to employers (D-099).
+- **Task 3-3-02** (frontend-engineer): D-109 surface 2 — the employer overview page's real placements section **REPLACES the mock-labeled placement metrics block** (employer-overview-client.tsx :335-372, the "(mock — no backend computes this)" label :351 — D-092: never leave a convertible surface on mock): hired applications with role_title/start-date via listEmployerPlacements, honest empty state; the talent-match/applicant-pipeline mock metrics STAY mock-labeled (no backend computes them). Tests: pins — the overview grep-clean of the placement mock block + the retained mock labels intact; fetch-stub placements render + empty state; `pnpm --filter web build` (static export) green.
 
-### Wave 4-1: Shared entitlement helper + employer posting routes (backend-engineer + lead-developer)
+### Wave 3-4: P3 phase gate (lead-developer)
 
-- **Task 4-1-01** (backend-engineer): the D-091 extraction: `consume_posting_entitlement(store, employer_id, upgrade_cta)` in api/ beside both callers (no billing/→api/ boundary violation) — extracted from marketplace_admin.create_posting lines 181-220; **canonical 402 dict `{reason, posts_used: 0, posts_limit: 0, upgrade_cta}` — posts_used/posts_limit hardcoded 0 in BOTH arms preserved EXACTLY (R-58 — the wire contract; UpgradeRequiredError consumes reason + upgrade_cta unchanged, D-080/D-084)**; store-missing → 503 fail-closed (the getattr guard); **gate runs BEFORE insert — a 402 consumes nothing, creates nothing**; `consume_posting` itself (G-304 single conditional UPDATE) UNTOUCHED. marketplace_admin.create_posting adopts the helper with the admin-checkout CTA — behavior byte-identical. Tests: **tests/billing/test_entitlement_enforcement.py green UNCHANGED (the no-drift proof)** + a new payload-parity test: admin-gate 402 vs employer-gate 402 assert equal reason/posts_used/posts_limit with only upgrade_cta differing per principal.
-- **Task 4-1-02** (backend-engineer): employer posting write routes (session gate → claim check → entitlement → insert, mirroring the "admin gate still first" composition, R-58): `POST /v1/employers/postings` (create draft — `consume_posting_entitlement(billing_store, session.employer_id, employer-CTA)`; 403 + claim-CTA unclaimed), `PATCH /v1/employers/postings/{id}` (**own drafts only — published/closed → 409 honest; another entity's posting → 403, the D-090 authorization arm; unknown → 404**), `POST .../postings/{id}/publish` (own draft → published + posted_at; the tagging/enrichment composition behind publish unchanged), `POST .../postings/{id}/close` (own posting → closed). Admin posting routes remain untouched (operator path unchanged, provenance-recorded). Tests: `tests/employers/test_postings_write.py` — create consumes from the employer's OWN package (posts_used+1 pinned); 402 both arms via direct store grants (the grant_posts precedent, test_entitlement_enforcement.py:70-85 — no package → `no_active_package`, exhausted → `posting_limit_reached`); **402 consumes nothing (gate-before-insert pinned: failed create leaves posts_used unchanged and no row)**; cross-entity 403; edit published → 409; publish/close lifecycle + applicant counts accrue; unlimited/enterprise manual grants bypass. (G-311: the session/claim gates compose BEFORE the entitlement check — unauthenticated → 401, unclaimed → 403, never a 402 (the R-58 admin-gate-first order; REQ-10-004's "AFTER" wording is corrected by this grill). G-317: employer create stamps its OWN provenance — `source="employer"` with `emp-` id/external_id schemes, never the admin route's `source="admin"` (authorship must stay answerable across seeded/admin/employer classes); the admin routes are untouched. G-318: employer edit composes the IDENTICAL update_posting_fields + tag_posting re-tag path as the admin edit (D-052 — tags are derived, overwritten on edit; tag failure honest, edit stands) with the own-drafts guard evaluated BEFORE any mutation — edit published/closed → 409 with no field/tag side effects. Pinned: employer-created posting carries the employer source stamp; employer edit re-tags on a mock provider; edit published → 409 AND nothing mutated.)
-- **Task 4-1-03** (lead-developer): D-091 no-drift review — both principal gates compose the SAME helper (source-level: no duplicated gate logic in either route); the 402 payload-parity test green; v0.9 billing/marketplace_admin suites green unmodified; wire contract (UpgradeRequiredError) unchanged.
+- **Task 3-4-01** (lead-developer): P3 phase gate — `pnpm lint` + `pnpm typecheck` + `pnpm ai:lint` + `pnpm ai:typecheck` + `pnpm ai:test:fast` + `pnpm web:test` + `pnpm cli:test` + `pnpm --filter web build` (web-touching phase) green; the D-110 pin review verdict recorded (placement.ts ↔ placements/base.py field-for-field); counts-discipline check (no denormalized counters anywhere); test counts recorded.
 
-### Wave 4-2: PostingManager write actions (frontend-engineer)
+## Phase 4: Audit Export (REQ-11-004)
 
-- **Task 4-2-01** (frontend-engineer): PostingManager gains the write actions over the engine-client employer section: create draft, edit own draft, publish, close — honest states: **402 → UpgradeRequiredError renders the upgrade CTA with the correct reason (the CTA routes to the employer billing surface, P5)**; 403 claim-CTA renders the claim prompt; 409/404 honest; optimistic-free, loading/error/empty per component state; AbortController everywhere. Tests: web fetch-stub — 402 CTA render with reason, publish/close dispatch, own-draft-only error copy, claim-prompt on 403. (G-320b: the 402 branch renders reason + upgrade CTA ONLY — the payload's posts_used/posts_limit are byte-stable zeros (D-091/MH-4a) and are NEVER rendered as limits; real limits render exclusively from GET /v1/employers/billing/entitlement; pinned by source pin.)
+**Goal:** The third-party-auditor deliverable exists: the self-contained JSON export + the human summary generated from the same document, methodology stating its own three pilot gaps, byte-deterministic re-exports, the admin web placements block + export links, the full-chain E2E proof.
 
-## Phase 5: Self-Serve Checkout + Admin Overview (REQ-10-005)
+### Wave 4-1: Export + summary routes + methodology + E2E (backend-engineer)
 
-**Goal:** The B2B loop closes: employer-principal checkout over the v0.9 catalog through the REAL webhook path (buyer = session's claimed entity), own entitlement view, pricing CTAs → employer-login path, and the admin moderation page gains the network overview (accounts, claim queue, audit).
+- **Task 4-1-01** (backend-engineer): `GET /v1/placements/admin/export` (D-108) — one self-contained JSON document via a single store-level builder function: `{schema_version, generated_at, summary: {distinct_learners_placed, total_active_placements, revoked_count, by_cohort_month}, cohort: [placement records with employer/posting/application refs + role_title + start_date], evidence_bundles: [per-placement {posting_record, application_record, transition_history[], decision_provenance} — **G-325 (binding): bundles cover EVERY placement (active AND revoked), each with the full event history incl. placement.revoked/placement.rehired — the correction history is precisely what an auditor most wants to inspect; `cohort` stays active-only; `revoked_count` equals the placement.revoked events (cross-checkable, rides G-321(c))** — each resolved from SOURCE ROWS at export time (G-302: the export EMBEDS resolved source content — snapshot-at-export, which is what self-contained means — while live rows stay the only write path; **NO backfill**: pre-v0.11 `submitted` applications carry only their `created_at` in the bundle — honest absence, never fabricated history, D-101/A-304)], methodology: {placement_definition, counting_rules, verification, scope}, ledger: {events: [{id, application_id, placement_id, event_type, actor_type, actor_ref, payload, created_at, prev_hash, hash}], head_hash}}`. Methodology per R-68 (written from in-tree facts) with **the three R-67 pilot gaps stated explicitly — (a) no minimum-employed-duration check (a placement = a recorded hire, not a 90-day sustained role), (b) no salary (D-098), (c) verification is employer-principal attestation + operator oversight, not third-party employment verification — an audit methodology that omits its own verification limits is A-304-class dishonesty**: `placement_definition` = a PlacementRow created by the hired transition, employer-attested role_title + start_date, active at export time, one active placement per application (the G-316 partial unique); `counting_rules` = distinct learners with ≥1 active placement, all-time cumulative toward 1,000, revoked excluded, cohort month = start_date calendar month (D-107); **`verification` per G-321 (binding): states (a) what the chain proves (in-place mutation/fork detection of an intact sequence), (b) what it does NOT (wholesale DB replacement undetectable by the walk alone — the auditor's defense is export-to-export continuity: a prior export's ledger.events must appear as an exact prefix of a later export's, with the prior head_hash equal to the hash at that prefix position), and (c) the event↔row cross-consistency check (every active placement has placement.created; every revoked has placement.revoked; revoked_count matches the placement.revoked events)**; `scope` = pilot-bounded, every placement in the DB unbounded by date, evidence class = employer-principal attestation; the cohort divergence documented deliberately (employment-start month, not graduation cohort — no graduation events exist in a marketplace, R-68); **CIRR kept as naming, not citation — the text stands on its own definitions (R-67)**. Determinism rules (R-73, binding): events ordered by id (chain order); `by_cohort_month` month ascending; cohort/evidence lists ordered placement `created_at` then id (the list_postings discipline, marketplace/store.py:940-948) — pydantic declaration-order serialization is deterministic but set-derived lists would not be, so every list is built with an explicit sort; **`generated_at` is export-only metadata (a function of the request, not the rows — R-79) and is excluded from determinism comparison**; **float absence — every export value is str/int/bool, no ratios or percentages (counts are integers by construction, D-107)**; `head_hash` = the last event's hash = `verify_chain()`'s computed head. pydantic + `JSONResponse` only — zero new deps (D-112). Tests land with Task 4-1-03.
+- **Task 4-1-02** (backend-engineer): `GET /v1/placements/admin/export/summary` (D-108) — `text/markdown` rendered **FROM the same JSON document (one builder, two renderings — the summary can never drift from the export, D-108's anti-drift rule)**: totals table (distinct learners placed, total active placements, revoked count, the guiding-goal progress line toward 1,000), per-cohort month table, the methodology prose (rendered from the export's methodology block — **G-321: incl. the chain's proof scope, its wholesale-rewrite limit, and the export-to-export prefix-continuity anchor**), **the head hash + chain-walk verification instructions** (recompute `hashlib.sha256` over the canonical JSON + prev_hash from GENESIS_HASH event-by-event — the walk is offline: the export embeds every event, so the auditor needs nothing else, R-70); **G-328 (binding): the summary's title carries the attestation language ("employer-attested, operator-overseen") — never a "CIRR-verified" claim**. Tests: summary totals equal the export's summary block on the same DB state (the same-builder pin); content-type pinned; 403 fail-closed without the admin token.
+- **Task 4-1-03** (backend-engineer): `tests/placements/test_export.py` — **re-export determinism: two exports on an unchanged DB → identical `ledger.events` chains + identical `head_hash`, with generated_at excluded (parsed field-by-field comparison or key-strip — R-73's TOTAL-exclusion rule)**; **chain-head consistency: `head_hash` = the last event's `hash` = `verify_chain()`'s output** (the walk re-computes every hash from GENESIS_HASH); **methodology completeness: the three R-67 gaps + all four methodology keys asserted present + the G-321 verification-scope statements (proof scope, wholesale-rewrite limit, export-to-export continuity, event↔row cross-check) asserted present**; **evidence-bundle completeness per G-325: every placement (active OR revoked) has a bundle with the resolved posting_record + application_record + transition_history (revoked bundles carry placement.revoked; re-hired carry placement.rehired)**; revoked placements absent from cohort but present in revoked_count (D-108); 403 fail-closed on both routes. Plus **the full-chain E2E proof `tests/placements/test_e2e_audit.py`** (the milestone's machine-checked reason-to-exist, D-111): employer register → claim → admin approve → create draft (direct package grant, the grant_posts precedent test_entitlement_enforcement.py:70-85) → publish → verified learner applies (seed_verified_identity, SUITE_LEARNERS) → employer drives in_review → interview → offer → hire `{role_title, start_date}` → PlacementRow created → ledger events chained (`verify_chain` green) → export → identical chain + head on re-export → overview counts the learner ONCE toward 1,000.
 
-### Wave 5-1: Employer checkout + entitlement view + mock-complete (backend-engineer)
+### Wave 4-2: Admin placements block + export links + security review + phase gate (frontend-engineer + security-auditor + lead-developer)
 
-- **Task 5-1-01** (backend-engineer): `POST /v1/employers/billing/checkout {item_id}` (R-59 verbatim transpose of billing_admin.create_checkout — only principal derivation + metadata provenance change): session gate → **unclaimed → 403 + claim-CTA** → catalog lookup 404 → mode = subscription iff kind==plan → success/cancel URLs from `settings.public_base_url` (G-310) → `insert_checkout_session` FIRST with unique pending placeholder (`pending-{uuid4().hex[:16]}`) → CheckoutSessionSpec with metadata employer_id = claimed entity, operator_ref → the account's provenance (D-076's "operator" becomes account provenance) → provider.create_checkout_session via app.state.payment_provider → bind_provider_session_id → CheckoutResponse. Plus `GET /v1/employers/billing/entitlement` (own purchases/subscriptions: current package, posts used/limit, expiry — honest states; the v0.9 shapes reused). The webhook route + _grant_entitlement serve employer checkouts verbatim (G-303 per-session exactly-once holds). Tests: `tests/employers/test_checkout.py` — unclaimed 403 claim-CTA; 404 unknown item; 201 shape + persisted row; metadata provenance pinned (employer_id = claimed entity, account ref recorded); entitlement view honest states (none/active/expired).
-- **Task 5-1-02** (backend-engineer): employer mock-complete arm (D-082 transposed, R-59): `POST /v1/employers/billing/mock/complete` mounted ONLY under provider=mock (factory-conditional), **employer-SESSION-gated, completing one's OWN session — cross-session completion → 403 (the G-301 hole class, open-risk-5); provider_session_id resolved from LOCAL rows by the session's own checkout rows (G-302 — payloads are untrusted ID references)**; mints the signed event through the REAL webhook path (mint_event → process_webhook_event, direct handler call — the D-082 proof shape); 404 under stripe (test-pinned). Tests: `tests/employers/test_checkout_e2e.py` — **E2E: register → login → claim → admin approve → checkout → own mock-complete → webhook → purchase exists with posts available**; cross-session completion → 403; stripe-mode mount → 404; duplicate complete falls through already-complete (no double grant, G-303).
+- **Task 4-2-01** (frontend-engineer): D-109 surface 4 — the moderation page (app/(admin)/admin/moderation/page.tsx:3/:35, the EmployerNetworkPanel area employer-network-panel.tsx:56) gains a placements block: aggregate counts (distinct learners placed, total active placements, guiding-goal progress) + per-employer placement lists via `GET /v1/placements/admin/overview`, transported over the existing `adminToken()` G-308 sessionStorage wrapper (engine-client.ts:815; the locked-state :28-40 pattern — **403 renders the honest locked state with the token prompt, never a retry loop**); export links — both fetched via the admin transport (token header attached, AbortController-equipped): **the summary opens in-tab** (the markdown rendered in the panel) and **the JSON export downloads** (blob download from the fetched document); honest empty state at zero placements. **G-328 (binding): counts are labeled as recorded placements ("distinct learners placed", "placements recorded") — "CIRR" NEVER appears as a verification claim on any live surface; "CIRR-style" describes the export format in release notes/methodology only (source pin: no "verified" placement wording on any new surface).** Tests: web fetch-stub — locked state on 403, counts + per-employer lists render, export links dispatch with the admin header, empty state; source pins for the locked-state branches + the G-328 wording pin.
+- **Task 4-2-02** (security-auditor): export-integrity review (P4 scope) — determinism rules honored (orderings pinned, generated_at total exclusion, no floats), **no PII beyond opaque handles** (learner_id is a G-5 roster handle, not name/email/DOB — identity PII is never stored, R-79; the export + 422 scrubber surface carry nothing else), methodology honesty (the three gaps stated; attestation never presented as third-party verification — A-304, the never-display-forgeable-as-verified constraint), head-hash truth (the export's head equals verify_chain's), evidence bundles resolved from source rows (G-302), both export gates fail-closed. Findings recorded; P0s fixed in-phase.
+- **Task 4-2-03** (lead-developer): P4 phase gate — `pnpm lint` + `pnpm typecheck` + `pnpm ai:lint` + `pnpm ai:typecheck` + `pnpm ai:test:fast` + `pnpm web:test` + `pnpm cli:test` + `pnpm --filter web build` green (web-touching phase); the determinism + methodology-honesty verdicts recorded; test counts recorded.
 
-### Wave 5-2: Employer billing surface + pricing CTAs + admin network overview (frontend-engineer)
+## Phase 5: Learner Placement Visibility (REQ-11-005)
 
-- **Task 5-2-01** (frontend-engineer): employer billing surface + pricing CTA conversion: the dashboard gains the entitlement view (current package, posts used/limit bar, expiry — honest empty/expired states) + buy flow (catalog from the public `/v1/billing/catalog`, own-checkout trigger, **in-app mock-complete confirmation honestly labeled as the pilot mock path**); **pricing-client.tsx CTAs convert from contact-path to employer-login path (superseding D-079) — the "Contact Sales" enterprise pin at pins.test.ts:250 STAYS (R-61)**; the operator-mediated copy is replaced by the self-serve truth with the admin-fallback noted honestly. Tests: web fetch-stub — entitlement render, checkout dispatch, mock-complete confirmation copy, CTA → /employer/login path, enterprise Contact Sales retained.
-- **Task 5-2-02** (frontend-engineer): admin network overview (D-094, R-62): the moderation page (app/(admin)/admin/moderation/page.tsx) gains sibling `<section>` blocks below the v0.9 EmployerEntitlementPanel: employer accounts list (email, claimed entity, entitlement state columns), claim queue (**evidence + domain-match signal rendered ADVISORY — never as verification, A-304**; approve/reject actions), audit view — fed by the P2 operator routes via engine-client admin transport over the existing `adminToken()` G-308 wrapper; **403 renders an honest locked state with the token prompt, never a retry loop (the entitlement-panel load() pattern, R-62)**. Tests: web fetch-stub — locked state on 403, claim queue renders evidence + advisory signal, approve/reject dispatch, accounts list columns.
+**Goal:** The learner sees their outcome on the surface where they applied: current status + full timestamped history + placement confirmation when hired (one read, one truth source), withdraw within reach; the badge stays honest everywhere.
 
-### Wave 5-3: P5 security review (security-auditor)
+### Wave 5-1: Learner application-status read route (backend-engineer)
 
-- **Task 5-3-01** (security-auditor): checkout surface review — employer mock-complete own-session check (cross-session 403 pinned; mock-only mount pinned; stripe-mode 404 pinned — the G-301 class closed), unclaimed checkout 403 claim-CTA honest, entitlement view leaks nothing cross-entity, sessionStorage exposure copy present on the dashboard (open-risk-4), pricing copy honest (self-serve real, mock path labeled, enterprise pin retained). Findings recorded; P0s fixed in-phase.
+- **Task 5-1-01** (backend-engineer): `GET /v1/marketplace/applications/{application_id}?learner_id=` (D-104, in api/marketplace.py — the existing apply surface): gated by the **D-043 composition** (G-5 allowlist marketplace.py:46-52 → verified 18+ :358 — the P2 withdraw additionally rides the existing apply-rate window; no new throttle knob, D-088 untouched); returns `{application, events[], placement|null}` — current status + the full id-ordered timestamped ledger history for THIS application (scoped query, never another learner's events) + the placement record when hired (REQ-11-005's outcome visibility + placement confirmation in one read, D-104); composes the placements store via `app.state` DI (deps.py); the response is a named pydantic contract in placements/base.py (pinned in placement.ts per D-110). **G-322 (binding): the mine point-read — store `get_application_by_posting_learner(posting_id, learner_id)` (the insert_application unique key — the get_posting point-read shape, marketplace/store.py:578-584) + route `GET /v1/marketplace/applications/mine?posting_id=&learner_id=` on the unchanged D-043 gate stack, returning `{application_id, status}` or 404 — the panel NEVER depends on client-persisted application_ids; without this route the status panel cannot find the application on revisit (the common case for a job board).** Tests `tests/placements/test_learner_status.py`: own application → 200 with status + events[] (id-ordered, this application only); hired → placement payload with role_title/start_date/employer refs; foreign learner_id → 403; unverified → 403; unallowlisted → 403; unknown application → 404; **mine-read arms (G-322): own → 200 {application_id, status}; none → 404; foreign learner_id → 403; unverified → 403**; the G-313 conftest reset holds (no self-429).
 
-## Phase 6: Final Review + Ship (milestone release, v0.9.x line)
+### Wave 5-2: Job-detail status panel (frontend-engineer)
 
-**Goal:** Multi-persona review of all v0.10 changes; audit (reconstruction + discipline); milestone ship: merge to main, tag v0.9.6 (final v0.9.x patch = milestone release), full asset matrix + registry image via the existing release lane (no infra changes — the module rides D-064/D-065), milestone completion commits, branch cleanup.
+- **Task 5-2-01** (frontend-engineer): D-109 surface 3 — job-detail-client.tsx (the existing apply surface: apply :95-115, EngineError 409/404 discrimination :103-105, confirmation render :253) gains the application-status panel: **G-322 composition: mine-read (`GET /applications/mine?posting_id=&learner_id=`) first → found? render the status panel via D-104's read : not found? render the apply CTA — never client-persisted application_ids**; current status badge (the seven D-099 states), timestamped history rows (events[]), placement confirmation when hired (role title, employer, start date — D-104's read), and the withdraw CTA (the learner's ONLY edit, D-104 — 409 terminal copy honest, and G-323's apply → 409 application_terminal copy renders the honest terminal state); **EngineError.status discrimination through the existing checks — NO new error classes** (403 foreign → the honest "not your application" state; 404 unknown; 401/403 gate arms render their existing states); AbortController everywhere (A-406). Badge honesty (A-304/D-109): **a placement badge renders ONLY in this learner's-own application surface where the data is real; the talent profile pages carry NO badge (v0.1 mock imports — a badge on a mock page is fabricated placement, D-092 binding)**. Tests: web fetch-stub + source pins (the G-312 discipline) — each status state renders, history rows, placement-confirmation payload render, withdraw dispatch + terminal 409 copy, foreign-403 copy, **mine-read composition (mine 404 → apply CTA; mine 200 → status panel)**; pins — talent-profile pages grep-clean of placement-badge additions; pins.test.ts placement blocks green.
+
+### Wave 5-3: P5 phase gate (lead-developer)
+
+- **Task 5-3-01** (lead-developer): P5 phase gate — `pnpm lint` + `pnpm typecheck` + `pnpm ai:lint` + `pnpm ai:typecheck` + `pnpm ai:test:fast` + `pnpm web:test` + `pnpm cli:test` + `pnpm --filter web build` green (web-touching phase); the A-304 badge-honesty census recorded (no badge on mock talent pages, no fabricated placement anywhere, mock labels retained where no backend computes them); test counts recorded.
+
+## Phase 6: Final Review + Ship (milestone release, v0.10.x line)
+
+**Goal:** Multi-persona review of all v0.11 changes; audit (reconstruction + discipline); milestone ship: merge to main, tag v0.10.6 (final v0.10.x patch = milestone release), full asset matrix + registry image via the existing release lane (no infra changes — the module rides D-064/D-065), milestone completion commits, branch cleanup.
 
 ### Wave 6-1: Multi-persona final review (lead-developer + security-auditor)
 
-- **Task 6-1-01** (lead-developer → all active personas): full milestone-branch diff review — the D-091 no-drift verdict holds end-to-end (one helper, two gates, byte-identical 402), the cross-boundary wire review (employer.ts ↔ employers/base.py pins, the 401/402/403 discrimination contract in engine-client), D-097 discipline (learner gates untouched on learner routes; zero on employer routes), the D-092 honest-surface census (talent mock labels intact, no fake-converted surface, no convertible surface left on mock). P0s fixed in-phase, never loop back to EXECUTE.
-- **Task 6-1-02** (security-auditor): final review — no credentials in logs/releases/assets; scrypt params + self-describing rows pinned; sessions hashed-at-rest; 422 scrub covers password+email; throttle windows active; audit trail complete (claim decisions, grants, revocations all provenance-recorded); no secret ever echoed by an exception path.
+- **Task 6-1-01** (lead-developer → all active personas): full milestone-branch diff review — the **D-100 one-transaction discipline holds end-to-end** (one transition_application, no second status writer, no second append path — R-78), the **R-80 re-hire coherence verdict** (placements, not applications, are the correction lane; the ledger reads hired → revoke → rehire as three events, never a fabricated second application transition), the **G-319 pin-split verdict** (counts-only stays on the own-postings list — test_postings_read.py:216 unchanged; learner_id application-scoped only), the **D-110 wire-pin review** (placement.ts ↔ placements/base.py field-for-field + the status-union regex), the D-092 honest-surface census (the overview mock block replaced, talent mocks retained + labeled, no fake-converted surface, no convertible surface left on mock). P0s fixed in-phase; P1+ findings dispositioned with recorded follow-ups — never loop back to EXECUTE.
+- **Task 6-1-02** (security-auditor): final review — no credentials or identity PII in logs/releases/assets (learner_id is an opaque handle everywhere, R-79); gate orders pinned on every principal class (employer/learner/operator); the ledger's no-delete path intact; tamper/fork/concurrency arms green; export determinism + methodology honesty re-verified; no secret echoed by any exception path.
 
 ### Wave 6-2: Audit + ship (lead-developer)
 
-- **Task 6-2-01** (lead-developer → ship): audit (git log ↔ .ciagent/ reconstruction; file discipline — the R-66 addition census: ai_service/employers/, api/employers*.py, the api/ helper + adoption, config.py knobs, main.py wiring, tests/employers/, .env.example, packages/types/employer.ts, engine-client section, employer pages, admin sections, pricing CTA; branch/commit discipline — feat: scoped to the employer surface) + ship: merge milestone → main; tag v0.9.6; Gitea release with full summary + the complete asset matrix + registry image (the existing tag-triggered lane — zero workflow changes); delete milestone branches (tags preserve history); mark REQ-10-001..005 complete in REQUIREMENTS.md; ROADMAP milestone entry; checkpoint cleared.
+- **Task 6-2-01** (lead-developer → ship): audit (git log ↔ .ciagent/ reconstruction; file discipline — the D-112 addition census: ai_service/placements/, api/placements_admin.py + the employers.py/marketplace.py route sections + deps.py get_placement_store, the marketplace store's get_application point read + grouped reads, main.py wiring, tests/placements/, packages/types/placement.ts + index.ts export, engine-client placements section, /employer/applications page, overview placements section, job-detail panel, admin placements block; branch/commit discipline — feat: scoped to the placement surface) + ship: merge milestone → main; tag v0.10.6; Gitea release with full summary + the complete asset matrix + registry image (the existing tag-triggered lane — zero workflow changes); delete milestone branches (tags preserve history); mark REQ-11-001..005 complete in REQUIREMENTS.md; ROADMAP milestone entry; checkpoint cleared.
 
 ---
 
-## Must-Haves (per phase — concrete, falsifiable, test-linked)
-
-- **P1 (REQ-10-001):** the employers module is importable + tested standalone; register/login/logout/me live with hashed sessions + both throttles; main.py wired; zero web changes. **MH-1a** register→login→me→logout flow green in tests/employers/test_auth.py; logout revokes (subsequent me → 401); concurrent sessions survive single logout. **MH-1b** REAL scrypt in every auth test (no fake-hash path; ≈2 hashes/test within the R-55 budget); params are module constants pinned by test; hash bytes never asserted. **MH-1c** employer_sessions stores ONLY sha256(token) (store-pinned); lazy 7-day TTL pinned via injected now (+6d present, +8d absent — no sleeps). **MH-1d** both throttle windows green in tests/employers/test_throttle.py — 5 failures/15 min → 429 with wait detail, success clears the email window, global cap → 429, rejected attempts consume nothing; reset fixtures isolate module state. **MH-1e** CORS preflight with `Access-Control-Request-Headers: Authorization` allowed — pinned in tests/api/test_cors.py (landed with the routes, not after). **MH-1f** a 422 on register never echoes the submitted password or email (pii_fields pin); mypy + ruff + full fast pytest green, zero new mypy overrides; no learner gate composed on any employer route (D-097).
-- **P2 (REQ-10-002):** claim → pending → admin approve → account.employer_id set, all pinned. **MH-2a** claim→approve→ownership set + audit row green in tests/employers/test_claims_admin.py. **MH-2b** evidence dict `{account_email_domain, entity_website_domain, match}` computed at claim time, stored as provenance, pinned in tests/employers/test_claims.py; displayed nowhere as verification (match=false corpus-wide per R-65). **MH-2c** one PENDING claim per entity + one APPROVED owner per entity + rejection frees the entity — all three pinned in tests/employers/test_claims_store.py. **MH-2d** all five operator routes (accounts/claims/approve/reject/audit) fail-closed 403 without a valid admin token.
-- **P3 (REQ-10-003):** the dashboard reads real data through the authenticated surface. **MH-3a** pins.test.ts employer.ts block asserts every field both schemas (ai_service/employers/base.py ↔ packages/types/employer.ts, D-093; PostingSummary reused from marketplace.ts, never duplicated). **MH-3b** 401 → SessionRequiredError → honest logged-out state with login CTA, never a retry loop (web test-pinned). **MH-3c** postings + overview pages grep-clean of removed mock imports (`jobs`, `candidates`, `employers`, inline METRICS/PIPELINE constants); own-postings lifecycle + real active count + per-posting applicant counts render from GET /v1/employers/postings; unclaimed → claim-CTA state visible; claim-pending state visible. **MH-3d** talent search + candidate profile pages keep their mock imports + mock labels (D-092 honest out-of-scope). **MH-3e** /employer/login + /employer/register render with honest 401/409/429/422 states; `pnpm --filter web build` (static export) green.
-- **P4 (REQ-10-004):** one shared gate, two principals, no drift. **MH-4a** the 402 payload is byte-identical between admin and employer gates on `{reason, posts_used: 0, posts_limit: 0}` — only upgrade_cta carries the principal's CTA — pinned by the payload-parity test; **tests/billing/test_entitlement_enforcement.py green UNCHANGED**. **MH-4b** gate-before-insert: a 402 consumes nothing and creates nothing (posts_used unchanged, no row) — pinned. **MH-4c** employer create consumes from the employer's OWN package (posts_used+1 pinned); both 402 arms (no_active_package, posting_limit_reached) proven via direct store grants; unlimited bypass holds. **MH-4d** cross-entity access → 403; own-drafts-only edit (published → 409); publish/close lifecycle green in tests/employers/test_postings_write.py; admin posting routes unchanged (existing marketplace_admin tests green unmodified).
-- **P5 (REQ-10-005):** the B2B loop closes machine-checked. **MH-5a** employer checkout E2E through the REAL webhook path green in tests/employers/test_checkout_e2e.py: register → claim → approve → checkout → own mock-complete → purchase exists with posts available (G-303 exactly-once holds — duplicate complete never double-grants). **MH-5b** cross-session mock-complete → 403; the route 404s under provider=stripe (mock-only mount) — both pinned (the G-301 class closed). **MH-5c** unclaimed checkout → 403 + claim-CTA; entitlement view renders honest none/active/expired states. **MH-5d** pricing CTAs route to /employer/login (contact-path copy gone from purchasable tiers); the enterprise "Contact Sales" pin retained (pins.test.ts:250). **MH-5e** admin network overview renders the accounts list, claim queue with advisory evidence + approve/reject actions, and the audit view; 403 → honest locked state with token prompt (web tests).
-- **P6 (ship):** **MH-6a** multi-persona review clean (P0s fixed in-phase); the D-091 no-drift + wire-pin verdicts recorded. **MH-6b** security final review clean (no credentials in logs/releases; audit trail complete). **MH-6c** reconstruction + discipline checks green; v0.9.6 tagged, merged to main, release carries the full asset matrix + registry image via the existing lane; REQ-10-001..005 marked complete; branches deleted; checkpoint cleared.
-
 ## Milestone Must-Haves
 
-- REQ-10-001..005 all complete per their REQUIREMENTS.md rows.
-- The full B2B loop is the machine-checked E2E proof: register → login → claim → admin approve → create draft → buy package (own mock checkout → REAL webhook) → publish → posting live — every step pinned in tests/employers/.
-- Zero new dependencies (R-66), zero workspace changes, zero mypy overrides; scrypt/secrets/hmac/sha256/urllib stdlib-only end-to-end.
-- The v0.9 wire contracts unchanged: UpgradeRequiredError byte-stable, existing billing/marketplace_admin entitlement tests green unmodified.
+- REQ-11-001..005 all complete per their REQUIREMENTS.md rows.
+- The E2E machine-checked proof (the milestone's reason to exist, tests/placements/test_e2e_audit.py): employer registers → claims → operator approves → posts → learner (verified 18+) applies → employer drives in_review → interview → offer → hire `{role_title, start_date}` → PlacementRow created → the global chain walks green GENESIS_HASH → head → the export reproduces identical chains + head_hash on re-export → the overview counts the learner ONCE toward 1,000 — every step pinned in tests/placements/.
+- Zero new dependencies (D-112 — the chain is stdlib hashlib/json; export is pydantic + JSONResponse), zero workspace changes, zero mypy overrides, zero .env.example changes (no new knobs — recorded explicitly).
+- The v0.6/v0.9/v0.10 wire contracts unchanged: marketplace/billing/employers suites green unmodified (the only marketplace seam changes are the get_application point read + grouped reads); the own-postings counts-only pin green unchanged (G-319); UpgradeRequiredError and every existing engine-client contract byte-stable.
+- Wire pins green: placement.ts dual-schema pinned field-for-field against placements/base.py (D-110), status-union regex pinned.
 - Suite counts: pytest fast lane + web + cli all green, zero warnings (the v0.7 regime holds).
-- Docs: .env.example throttle knobs; REQUIREMENTS/ROADMAP updated; deploy/README.md unaffected (no admin-box changes — record explicitly); the mock-first doctrine intact (no external auth provider, tests never call a cloud).
+- Docs: REQUIREMENTS/ROADMAP updated; deploy/README.md unaffected (no admin-box changes — recorded explicitly); the mock-first doctrine intact (no external systems, no third-party auditor integration — the export IS the deliverable; tests never call a cloud).
 
 ## Risks
 
-1. **scrypt CPU on concurrent auth** (R-55, ~50 ms/hash single-threaded; a login burst stacks) — bounded by both throttle windows; budget recorded in the passwords.py docstring; acceptable at pilot.
-2. **CORS Authorization omission kills every cross-origin employer fetch** (E87 class, R-60/open-risk-2) — the main.py edit + the test_cors.py pin land in P1 Task 1-2-03, the same wave as the routes, never after.
-3. **422 password echo** (R-56/open-risk-3) — pii_fields fix + pin land in P1 with the register route; auditor re-verifies at the P1 review.
-4. **sessionStorage token exposure** (D-092 tradeoff, open-risk-4) — tab-scoped by design, exposure documented in surface copy; tokens stored hashed server-side (DB leak yields nothing); logout revokes the row.
-5. **Employer mock-complete cross-session completion** (G-301 hole class, open-risk-5) — own-session check (403 cross-session) + mock-only mount + session gate, all pinned in P5.
-6. **example.com seed websites make claim evidence match=false corpus-wide** (R-65/open-risk-6) — the queue copy presents the signal as advisory; the operator decision activates; auto-approval stays deferred (A-304).
-7. **D-091 extraction drift** (the 402 dict's hardcoded zeros are easy to "improve") — the payload-parity test + unchanged v0.9 entitlement suite are the no-drift proof; lead-developer reviews at P4.
-8. **Throttle module-state leaks across tests** (R-63) — both limiters get reset fixtures from day one (the _reset_apply_rate_window pattern).
+1. **Re-hire-after-revoke coherence gap (R-80)** — `hired → hired` is a 409 on every matrix-validated surface, so the re-hire is pinned as the placement-level operator route `POST /v1/placements/admin/placements/by-application/{application_id}/re-hire` + the `placement.rehired` ledger event, never an application transition — Task 2-2-02; the three-event sequence + the partial-unique IntegrityError arm tested.
+2. **Hash-after-flush write shape (R-70)** — flush-then-hash-then-commit inside one transaction, ALL appends through the one transition_application, the no-delete-path pin — Task 1-1-03 (+ the 1-1-02 source pin); tamper/fork/concurrency tests green.
+3. **created_at canonical serialization (R-79/R-69)** — ONE pinned normalization (`_as_utc(dt).isoformat()`) in `_canonical_event_json`; the tamper tests catch hashing/reading drift before the chain breaks on its first re-read — Task 1-1-02.
+4. **_APPLY_TIMES limiter reset (R-77)** — tests/placements/conftest.py replicates the autouse reset from day one (the G-313 lesson applied before it ships, not after flaky archaeology) — Task 1-2-01.
+5. **Methodology honesty block (R-67/R-68)** — the three pilot gaps (no duration check, no salary, attestation-not-third-party-verification) stated explicitly in the export methodology — Task 4-1-01; asserted present by Task 4-1-03.
+6. **Export determinism rules (R-73)** — pinned list orderings (events by id; cohort month ascending; placements created_at then id), total generated_at exclusion, float absence — Task 4-1-01; the re-export test is the proof.
+7. **Status-column ownership (R-78)** — the placements store is the ONLY post-creation writer of application.status; stated column-level in the module docstring + enforced by the D-100 discipline check at the P1 gate (Task 1-3-02).
+8. **G-319 supersession pin split (R-77)** — counts-only stays on the own-postings list (test_postings_read.py:216 unchanged); learner_id appears on application-scoped routes only, cross-entity 403 carries no data — Task 2-1-02 pins both arms.
+9. **Concurrent-transition arm (R-78)** — one-winner-one-IntegrityError on truly concurrent transition_application calls (the billing concurrent-consumption shape, tests/billing/test_store.py:335) — Task 1-1-03.
+10. **CIRR specifics from knowledge, not live sources (R-67)** — the methodology text stands on its own definitions; CIRR is naming, not citation; the summary renders the prose an auditor reads without external references — Tasks 4-1-01/4-1-02.
 
 ## User-Facing Surface
 
-1. **/employer/login + /employer/register** — greenfield auth pages with honest 401/409/429/422 states; register → logged-in dashboard; sessions tab-scoped via `nc-employer-session`.
-2. **Employer dashboard — postings page** — the employer's OWN postings lifecycle (draft → published → closed) with real applicant counts, create/edit/publish/close actions, honest 402 upgrade CTA + 403 claim prompt.
-3. **Employer dashboard — overview** — real active-postings count + per-posting applicant counts + claimed-entity profile; talent-match/placement metrics honestly mock-labeled; claim-pending state visible.
-4. **Talent search + candidate profile** — remain the v0.1 mock, honestly labeled (no candidate backend exists — D-092).
-5. **Pricing page** — CTAs convert to the employer-login path (self-serve checkout is real); enterprise tier keeps Contact Sales.
-6. **Admin moderation page — network overview** — employer accounts list, claim queue with advisory evidence + approve/reject, audit view; 403 → honest locked state.
-7. **API surfaces** — /v1/employers/* (session-gated: auth, claims, postings, billing) + /v1/employers/admin/* (operator-gated) + the existing /v1/billing/* reused verbatim.
-8. **Release notes** — the v0.9.x line ships the employer network through the existing automated lane (no admin-box changes required).
+1. **/employer/applications (NEW)** — the hiring pipeline: own applications with status badges, per-target transition CTAs, the hire form `{role_title, start_date}` (a date input, future dates allowed); honest pending/empty/claim states.
+2. **Employer dashboard — overview placements section** — real hired placements with role/start-date (the mock block REPLACED); talent-match/applicant-pipeline metrics stay mock-labeled.
+3. **Job detail — application-status panel** — the learner's current status + timestamped history + placement confirmation when hired + withdraw CTA; honest 403/404/409 states.
+4. **Admin moderation page — placements block** — aggregate counts toward the 1,000 guiding goal + per-employer lists + export links (summary in-tab, JSON download); 403 → honest locked state with token prompt.
+5. **Talent search + candidate profile** — remain the v0.1 mock, honestly labeled, with NO placement badge (A-304 — no badge on mock pages).
+6. **API surfaces** — `/v1/employers/applications/*` (session-gated transitions + own pipeline list), `/v1/marketplace/applications/{id}` + `/withdraw` (learner-gated, D-043 stack), `/v1/placements/admin/*` (operator-gated: transition, revoke, re-hire, overview, export, export/summary).
+7. **Release notes** — the v0.10.x line ships placement tracking through the existing automated lane (no admin-box changes required).
 
 ## Happy Path (end-to-end, written BEFORE execute)
 
-1. **Employer registers:** /employer/register → account created (email unverified, labeled as such) → logged in → dashboard shell with the claim prompt.
-2. **Employer claims their entity:** picks their EmployerRow from the marketplace corpus → claim pending, evidence recorded → dashboard shows the honest claim-pending state.
-3. **Operator approves:** admin moderation page → claim queue shows the evidence + domain-match signal (advisory) → approve → account bound to the entity (one owner) → audit row written.
-4. **Employer tries to post without a package:** create draft → 402 with upgrade CTA (reason: no_active_package) → nothing consumed, nothing created.
-5. **Employer buys a package (pilot mock):** dashboard billing surface → own checkout over the catalog → in-app mock-complete (honestly labeled) → REAL webhook path → purchase granted → posts available in the entitlement view.
-6. **Employer publishes:** create draft (posts_used+1) → publish → posting live on the public job board; applicant counts accrue on the overview; the 11th post on a 10-pack → 402 upgrade CTA again.
-7. **Operator oversight throughout:** the network overview shows the account, claimed entity, and entitlement state; the audit trail answers every claim/grant/revocation decision.
+1. **Employer onboards (v0.10 rails unchanged):** register → claim their entity → operator approves → the account owns the entity.
+2. **Employer posts:** create draft (package granted) → publish → the posting is live on the job board.
+3. **Learner applies:** a verified 18+ learner applies from the job-detail page → application `submitted` → the status panel shows the timestamped entry.
+4. **Employer drives the pipeline:** /employer/applications → in_review → interview → offer → the learner's panel reflects each step with its event history.
+5. **Hire:** the employer submits `{role_title: "AI Orchestration Engineer", start_date: next month}` → hired (terminal) → the PlacementRow is created in the same transaction as the ledger events → the learner's panel shows the placement confirmation (role, employer, start date).
+6. **Operator oversight:** the admin overview counts the learner ONCE toward 1,000; a mistaken hire → operator revoke → re-hire creates a fresh placement with a three-event ledger trail — the learner is never erased from the count by a correction.
+7. **Auditor exports:** the admin placements block → the JSON export downloads (self-contained: cohort + evidence bundles + methodology + chain with head hash) + the summary opens in-tab → re-export reproduces the identical chain + head → the chain-walk instructions let a third party recompute every hash offline.
 
 ## UX Acceptance Criteria
 
 1. **Honest states everywhere:** every new surface renders real loading/error/empty states — no spinners that lie, no silent failures, no fake data.
-2. **401 → honest logged-out state:** SessionRequiredError renders the logged-out state with a login CTA — never a retry loop, never a silent redirect.
-3. **402 upgrade CTA visible with correct limits:** the payload's reason drives the copy (no package vs limit reached); the CTA routes to the employer billing surface; limits shown are the store's truth. (G-320b: the 402 payload's posts_used/posts_limit are byte-stable zeros, never rendered — real limits render from the entitlement view only.)
-4. **Claim-pending state visible to the employer:** the dashboard says "claim submitted, awaiting review" until the operator decides — never presented as verified before approval.
-5. **Admin sees the claim queue with evidence:** the domain-match signal renders as advisory (match=false is the corpus norm); approve/reject are explicit operator actions with an audit trail.
-6. **Talent pages remain mock-labeled:** the honest-surface rule cuts both ways — never fake-convert, never leave a convertible surface on mock; talent stays mock because no backend computes it.
+2. **Gate order never surfaces a 409 before a 403:** unauthenticated → 401, unclaimed → 403 claim prompt, foreign application → 403 with no data, only then matrix 409s — pinned on every transition route (G-311).
+3. **401 → honest logged-out state:** SessionRequiredError renders the login CTA on employer surfaces — never a retry loop, never a silent redirect; admin surfaces render the token-prompt locked state on 403.
+4. **Counts honesty:** the overview counts DISTINCT learners toward 1,000 (a learner placed twice counts once); revoked placements excluded from every count; counts render from the store's rows at query time — never a denormalized or cached counter.
+5. **Export self-verification:** the summary carries the head hash + offline chain-walk instructions; the methodology states its own three pilot gaps AND the chain's proof scope + wholesale-rewrite limit + export-to-export continuity anchor (G-321) — employer attestation is never presented as third-party verification (A-304); **G-328: no "verified" placement wording on any live surface (source-pinned)**.
+6. **Badge honesty:** a placement badge renders only on the learner's own application surface where the data is real; no badge until a placement exists; none ever on the mock talent pages.
+7. **Mock labels retained where no backend exists:** talent-match/applicant-pipeline metrics stay mock-labeled; talent pages stay the v0.1 mock — never fake-convert, never leave a convertible surface on mock (D-092).

.ciagent/PROJECT.md

@@ -16,7 +16,34 @@ Nextcraft is an AI-native outcome school where graduates prove what they can bui
 
 ---
 
-## Milestone v0.10 — B2B Employer Network (ACTIVE, Feature, started 2026-09-30)
+## Milestone v0.11 — CIRR-Style Placement Tracking and Audit (ACTIVE, Feature, started 2026-10-01)
+
+**Scope (D-098, auto-decided at SPECIFY under full autonomy D-007; founder scope confirmed 2026-10-01):** Activates **REQ-F-020 — CIRR-style placement tracking and audit** as REQ-11-001..005. The guiding outcome ("≥1,000 learners placed in AI-orchestration roles within 36 months, **verified by CIRR-style third-party audit**") is the school's single north star — v0.11 builds the machinery that makes it measurable and auditable. Every prerequisite is shipped: the learner identity spine (v0.5), the credential pipeline (v0.3), the marketplace applications flow (v0.6, `ApplicationRow`), the employer principals (v0.10, claimed entities + audit trail). v0.11 adds: the placement record model (learner + employer + role + start date, evidenced, immutable event log), the employer-side application state machine extending the v0.6 `submitted`-only status (hiring-stages transitions with audit), placement reporting surfaces (per-employer, per-learner, aggregate), and the **audit-grade export** — the evidence-backed dataset a third-party auditor can verify (cohort snapshots, per-placement evidence chains, tamper-evident event ledger, methodology documentation). Rationale: D-085's closing sentence names CIRR tracking as what the employer network "unlocks"; the guiding outcome is unmeasurable without it; no other deferred requirement (REQ-F-019 is medium and adds a surface, not the outcome). Confidence 0.80 ≥ threshold 0.60 (D-007).
+
+**Out of scope:** human tutor marketplace (REQ-F-019, deferred), external third-party auditor integration (the export is the deliverable — no CIRR org exists to integrate with), learner-side employment verification (self-report stays out; employer-side state changes are the evidence), compensation/salary tracking (role + start date + employer suffice for placement counting; salary is out per CIRR-adjacent minimalism), public placement-stats marketing pages (internal + export only).
+
+**Success (milestone-level):** every application in the marketplace has an auditable state history (submitted → in_review → interview → offer → hired/rejected/withdrawn, transitions employer-principal-driven and audit-logged); a placement record exists for every hired application with evidence (posting ref, application ref, timestamps, decision provenance); aggregate placement counts are computable from the ledger (per employer, per cohort month, cumulative toward ≥1,000); the audit export produces a self-contained, evidence-linked dataset (JSON + human-readable summary) whose placement claims are each traceable to immutable events; the mock-first doctrine holds (no external systems; tests never call a cloud). a placement record exists for every hired application with evidence (posting ref, application ref, timestamps, decision provenance); aggregate placement counts are computable from the ledger (per employer, per cohort month, cumulative toward ≥1,000); the audit export produces a self-contained, evidence-linked dataset (JSON + human-readable summary) whose placement claims are each traceable to immutable events; the mock-first doctrine holds (no external systems; tests never call a cloud).
+
+## Clarify decisions (D-099+, CLARIFY stage full autonomy, 2026-10-01)
+
+| ID | Decision | Rationale | Confidence |
+|----|----------|-----------|------------|
+| D-099 | Application status vocabulary = **snake_case set `submitted → in_review → interview → offer → hired / rejected / withdrawn`, forward-only with skip-forward, terminals have no outgoing edges**: the validated matrix (billing's `_VALID_TRANSITIONS` shape, billing/store.py:84-90) allows from any non-terminal status (a) any LATER stage (a fast-track `submitted → hired` is a legal hire — CIRR counts the hire, not the ceremony) and (b) any terminal (`rejected`/`withdrawn`); NO backward moves (no `offer → in_review`; the posting lifecycle draft→published→closed is strictly forward, store.py:289/609-632 — hiring inherits the discipline); `hired`/`rejected`/`withdrawn` are terminal — re-transition → 409 (`InvalidTransition`, the set_posting_status route contract); `withdrawn` is triggerable by the learner (own application, D-104) OR the operator (remediation, actor recorded — never by an employer session, who may `reject` instead); value naming is snake_case `in_review` (REQ-11-002's own text; billing's `past_due` precedent). Existing v0.6 rows are all `submitted` (store.py:211) — a valid matrix start, zero data migration. | The tree's two transition machines (posting store.py:609-632, subscription billing/store.py:84-90) both pin exact matrices with terminal empty-tuples; G-305's lesson (no phantom states, no un-matrixed moves) applies verbatim; skipping stages is honest pipeline reality (REQ-11-002 names the stages but no rule forbids acceleration, and an operator correcting a mis-entered pipeline must be able to jump forward). | 0.85 |
+| D-100 | The state machine lives in **`ai_service/placements/` — the placements store owns ONE `transition_application(application_id, to_status, actor_type, actor_ref, role_title=None, start_date=None)` method that updates the marketplace `application` row + appends the ledger event + creates the `PlacementRow` on hired, ALL IN ONE TRANSACTION** (the decide_claim all-or-nothing precedent, employers/store.py:636-651: "the audit row rides the SAME transaction"); the transition matrix constant lives in `placements/base.py` (billing/base.py `CANONICAL_EVENT_NAMES` placement); the marketplace store KEEPS application insert/read ownership (insert_application unchanged; gains only a `get_application(application_id)` point read, the get_posting shape at store.py:578-584) — the placements store's cross-family write to the `application` table is the sanctioned deliberate exception: both stores share the one SQLite file, so one Session on the placements engine covers both tables atomically. The rejected alternative — route composes `marketplace.set_application_status` + `placements.append_event` as two commits — leaves a crash window where the status changed but no ledger row exists, which voids REQ-11-002's "every transition appends the placement ledger" (the exact tamper-evidence the milestone sells). | REQ-11-002's ledger-append requirement is only provable under one transaction; decide_claim is the in-tree proof that decision + audit event must land together; cross-module reuse is family-sanctioned (employers/base.py:22 subclasses marketplace.base.Posting — D-093); D-027 table ownership bends here because the feature boundary (application lifecycle) crosses the v0.6 table boundary, and the bend is one column-write executed by one named store method, never a route-side two-step. | 0.80 |
+| D-101 | Hash-chain construction = **ONE GLOBAL chain over `PlacementEventRow` ordered by autoincrement id: each row stores `prev_hash` (the prior event's hash; `GENESIS_HASH = "0" * 64` module constant, test-pinned) + its own `hash` = `hashlib.sha256` (hex digest) over canonical JSON `{id, application_id, placement_id, event_type, actor_type, actor_ref, payload, created_at}` + `prev_hash`, serialized `json.dumps(..., sort_keys=True, separators=(",", ":"))`, created_at as ISO-8601 UTC** (deterministic; stdlib-only — the D-086 zero-dep doctrine, the D-077 HMAC-SHA256 crypto precedent); **`UNIQUE(prev_hash)`** makes a chain fork structurally impossible (two events claiming the same predecessor surface IntegrityError — the G-316 structural-backstop class); event rows carry BOTH a nullable indexed `application_id` (application-stage transitions log before any placement exists) and nullable `placement_id` (set from hired onward); **NO backfill**: pre-v0.11 applications have no `submitted` event — the export's evidence bundle carries the application record's own `created_at` (honest absence, never fabricated history, A-304; the G-302 doctrine cuts both ways). Actor vocabulary: `employer \| learner \| operator \| system` (the billing `_BILLING_EVENT_KINDS` shape, billing/store.py:92). | REQ-11-004 names "the event-ledger chain with head hash" — singular: one global chain with one head is the simplest verifiable shape (a single linear walk re-computes every hash; per-placement chains would need N heads and per-chain genesis bookkeeping for nothing at pilot scale); canonical sorted-key JSON is the standard deterministic-serialization answer and makes the re-export integrity test exact; SQLite's single-writer serialization plus the UNIQUE backstop closes the two-appenders-same-prev race the G-316 lesson demands. | 0.80 |
+| D-102 | PlacementRow semantics = **immutable at creation; `status` is the ONLY mutable column with exactly one transition `active → revoked` (operator-only correction, the D-083 manual-remediation lane)**: `role_title`/`start_date`/`decided_at`/`learner_id`/`employer_id`/`posting_id`/`application_id` are set once at the hired transition and NEVER rewritten (a silent field rewrite is exactly the tamper the ledger exists to detect; the D-053 append-only enrichment doctrine); `decided_at` = the hired transition's created_at (store-stamped, `datetime.now(UTC)`, the insert_application precedent); the one-placement-per-application guard is a **partial UNIQUE index on `application_id` WHERE status='active'** (the G-316 `uq_pending_claim_per_entity` shape, employers/store.py:161-167) — a revoked placement stays in history, and a re-hire after a mistaken revoke creates a fresh placement for the same application, so an operator fat-finger never permanently erases a learner from the ≥1,000 count; `employer_id`/`learner_id`/`posting_id` are ID REFERENCES resolved from source rows at read/export (G-302 — never trusted denormalized copies). | REQ-11-001's plain "UniqueConstraint (application_id)" would make a mistaken hire uncorrectable forever (terminal application + unique placement = no re-hire path), which is operationally dishonest for an audit-grade dataset that must survive human error; the partial-index precedent exists in-tree for exactly this conditional-uniqueness shape; revoked placements are excluded from counts (D-107) so the correction is counting-honest too. | 0.75 |
+| D-103 | `start_date` = **the employment start DATE (first day of work), a pydantic `date` — not the offer date, not a datetime**: the offer moment is already audit-truth as the hired transition's `decided_at` (D-102), so `start_date` answers "when did/will employment begin" (the CIRR question); timezone-free by construction (a calendar date has no tz — the cohort month D-107 keys on it); **future dates allowed** (hired today, starts next month — the normal case) and past dates allowed (retroactive recording of a hire that began last week); REQUIRED in the hire request body alongside `role_title` (employer-supplied at transition time, REQ-11-002's "hired creates the PlacementRow + role_title + start_date payload"); `role_title` is free text (defaults to nothing — never silently the posting title; the employer names the actual role). | A datetime would fabricate precision no employer supplies (nobody's start is "2026-11-03T14:22:51Z"); date-only matches every CIRR-adjacent reporting convention (monthly cohort tables); making both fields explicit-request-body requirements keeps the placement record employer-attested (the A-304 doctrine: the record carries what the principal actually asserted, never an inferred copy). | 0.85 |
+| D-104 | Learner routes live in **`api/marketplace.py` (the existing apply surface) with the D-043 composition unchanged — G-5 allowlist → verified 18+ → `_check_apply_rate`**: `POST /v1/marketplace/applications/{application_id}/withdraw` (body `{learner_id}` — 403 when the application is not the caller's, 409 when terminal, 422-free) and `GET /v1/marketplace/applications/{application_id}?learner_id=` returning `{application, events[], placement|null}` (current status + full timestamped ledger history + the placement record when hired — REQ-11-005's outcome visibility + placement confirmation in one read); the withdraw rides the EXISTING apply-rate window (marketplace.py:66-76 — 5/rolling-60s per learner, no new throttle knob, D-088's auth-only throttle scope untouched); the routes compose the placements store via `app.state` DI (the territory rule, deps.py) for the history/placement sections and call the SAME `transition_application` store method (D-100) with `actor_type="learner"`. Learner-initiated edits go NO further: only `withdrawn` (REQ-11-005's "no learner-initiated edits… the withdrawn transition is the exception"). | D-097's binding left the learner gates untouched and pinned them to learner surfaces — the marketplace module IS the learner application surface (apply at marketplace.py:345-382 with this exact gate stack); the G-5 allowlist stays the pilot guard on every learner-gated route (A-306); riding the existing limiter avoids a new knob and its G-313 conftest-reset trap is already solved in tests/marketplace (conftest.py:123-131, mirrored into tests/placements per D-111). | 0.85 |
+| D-105 | Employer transition routes = **per-target action routes under `/v1/employers/applications`** — `GET /v1/employers/applications?status=` (own pipeline), `POST .../{application_id}/in-review`, `.../interview`, `.../offer`, `.../reject`, `.../hire` (hire body `{role_title, start_date}`) — mirroring the posting lifecycle idiom (`/postings/{id}/publish`, `/postings/{id}/close`, employers.py:632-715); gate order (G-311): session 401 (`require_employer_session`, employers.py:173-191) → claim 403 (`_require_claimed`, employers.py:467-484) → cross-entity 403 (fetch application → posting → `posting.employer_id != claimed` → 403, the `_own_posting_or_404` shape at employers.py:487-503 applied through the application's posting) → transition 409 (never a 409 before a 403); every route rides the same `transition_application` method with `actor_type="employer", actor_ref="account:{id}"` (the D-091 checkout-metadata provenance shape) and appends an `employer_audit_events` row (the audit trail stays one queryable lane, D-089). **G-319 scoping (binding):** the v0.10 counts-only PII boundary was scoped to the own-postings LIST surface; v0.11 supersedes it for application-scoped reads/transitions — `learner_id` becomes visible ONLY for applications on the session's own claimed-entity postings (cross-entity → 403, no enumeration); the own-postings list's `applicant_count` stays counts-only. | A hiring pipeline without applicant identity is unworkable (REQ-11-002/003 inherently require it; A-408's "founder contacts employers out-of-band" was the no-employer-principal era's workaround, ended by v0.10); per-target routes keep the matrix OUT of request bodies (each route's store call names its target — one less validation surface, the publish/close precedent); G-319's intent was anti-enumeration/anti-cross-entity, and the 403-on-foreign-application arm preserves exactly that. | 0.80 |
+| D-106 | Admin oversight = **`api/placements_admin.py`, prefix `/v1/placements/admin`, `require_admin` IMPORTED from marketplace_admin (the billing_admin.py:27 import precedent, employers_admin.py:47) — one generic remediation route `POST /v1/placements/admin/applications/{application_id}/transition` `{to, role_title?, start_date?}`** (validated against the same D-099 matrix; role_title/start_date required iff `to=hired`; `actor_type="operator"` with `OPERATOR = "operator"` route-level provenance, employers_admin.py:54 — no per-operator accounts exist, D-094), **plus `POST .../placements/{placement_id}/revoke`** (D-102's operator-only correction, one transition) and the reporting/export reads (D-107/D-108): `GET .../overview`, `GET .../export`, `GET .../export/summary`; no employer-session gate, no learner gate (a third principal class — D-097); token namespaces cannot collide (D-090); the operator can drive ANY matrix-legal transition including `withdrawn` on a learner's behalf (remediation with provenance — the D-083 manual-grant lane). | REQ-11-002 names "admin routes retain operator oversight (admin transition + audit, the D-094 lane)" — one generic route (vs the employer surface's per-target idiom) is the operator-tooling shape: fewer routes to audit, and the matrix validation lives once in the store (D-100); the export prefix matches REQ-11-004's own `/v1/placements/admin/export`; fail-closed on unset token is inherited free from require_admin (G-11 boot warning already covers it, main.py:251-256). | 0.85 |
+| D-107 | Reporting semantics = **counts computed from rows at query time (never denormalized counters — G-302), with the guiding-outcome metric = DISTINCT LEARNERS with ≥1 `active` placement, all-time cumulative toward 1,000**: a learner placed twice counts ONCE ("≥1,000 learners placed" — the PROJECT.md guiding outcome is learners, not placements); `revoked` placements are excluded from every count (D-102's correction semantics); **cohort month = the calendar month of `start_date` (`YYYY-MM`)** — not application month, not hired month (CIRR cohorts on employment start); `GET /v1/placements/admin/overview` returns `{total_active_placements, distinct_learners_placed, guiding_goal: 1000, by_employer: [{employer_id, count}], by_cohort_month: [{month, count}]}`; per-employer view = the claimed entity's `hired` applications with role/start-date (REQ-11-003's employer-dashboard placements section); joins run through the existing stores (employer identity via `employer_accounts.employer_id`/EmployerRow, posting via postings, learner via application rows — REQ-11-003's own "counts join through existing stores"); batched reads use the `count_applications_by_posting` grouped-read discipline (store.py:915-932) — never per-row N+1. | The guiding outcome's noun is "learners" (PROJECT.md line 7) — counting placements would inflate the north star; date-only cohort keys make month buckets deterministic (D-103); counting from rows keeps revoke honest without counter-maintenance writes (the G-306 lazy-evaluation lesson: derived state computed at read, never a timer or a stored tally). | 0.85 |
+| D-108 | Export format = **`GET /v1/placements/admin/export` returns one self-contained JSON document**: `{schema_version, generated_at, summary: {distinct_learners_placed, total_active_placements, revoked_count, by_cohort_month}, cohort: [placement records with employer/posting/application refs + role_title + start_date], evidence_bundles: [per-placement {posting_record, application_record, transition_history[], decision_provenance} — each resolved from SOURCE ROWS at export time (G-302)], methodology: {placement_definition, counting_rules, verification, scope}, ledger: {events: [{id, application_id, placement_id, event_type, actor_type, actor_ref, payload, created_at, prev_hash, hash}], head_hash}}`; **`GET /v1/placements/admin/export/summary`** returns the human-readable rendering (text/markdown: totals table, per-cohort table, methodology prose, head hash, chain-walk verification instructions); scope is honest pilot-bounded (every placement in the DB, unbounded by date — REQ-11-004's own scoping); **re-export determinism: the integrity test asserts identical `ledger.events` chains + identical `head_hash` across two exports, with `generated_at` excluded from comparison** (the chain is a function of stored rows; generated_at is the export's own timestamp, not ledger content); the summary is generated from the same JSON (one truth source — the summary can never drift from the export). | REQ-11-004 names all four dataset components ((a) cohort snapshot, (b) evidence bundles, (c) methodology, (d) chain+head) — this is exactly that shape with names an auditor can consume; "resolved from source rows, never denormalized copies" means snapshot-at-export (the export EMBEDS resolved source content — that's what self-contained means) while the live rows stay the only write path; methodology-as-structured-JSON keeps it versioned and machine-checkable while the summary route renders the prose an auditor reads. | 0.80 |
+| D-109 | Web conversion scope = **four surfaces, no new client module**: (1) new `/employer/applications` page (the hiring pipeline: own applications with status badges + per-target transition CTAs — honest pending/empty/403-claim states, the A-406 board-client discipline); (2) the employer overview page gains a real placements section (hired applications with role/start-date, honest empty state) — its existing applicant-pipeline/talent-match mock metrics stay mock-labeled (D-092: never fake-convert, never leave a convertible surface on mock); (3) the job-detail client (the existing apply surface, job-detail-client.tsx) gains an application-status panel: current status + timestamped history + placement confirmation when hired, via D-104's learner read (401/403/409 discrimination through existing `EngineError.status` checks — job-detail-client.tsx:103-105 precedent, NO new error classes); (4) the admin moderation page's EmployerNetworkPanel area gains a placements block (aggregate counts + per-employer lists via D-107 overview, adminToken() transport per G-308) + an export link (summary opens in-tab; JSON export downloads). **The talent profile's placement badge stays absent** — talent profile pages remain v0.1 mock (D-092 binding), and a badge on a mock page is A-304 dishonesty; a REAL badge renders only on the learner's own application surface (D-104's placement section) where the data is real. | REQ-11-003 names the employer dashboard + moderation-page surfaces; REQ-11-005 names the learner application surface (the job detail page IS that surface today — apply + confirmation live there, job-detail-client.tsx:50/253); D-092's conversion doctrine (real where a real backend exists, mock where none does) maps cleanly: placements have a backend, talent profiles do not. | 0.80 |
+| D-110 | Wire discipline = **`packages/types/placement.ts` (ApplicationStatus union, Placement, PlacementEvent, EmployerApplicationSummary, transition request/response shapes, PlacementOverview, PlacementExport) dual-schema pinned field-for-field against `ai_service/placements/base.py` pydantic contracts in `apps/web/tests/pins.test.ts`** (the D-093 template — the employer.ts pin block); engine-client.ts gains a **placements section** (no new client module — D-092's binding: one client module keeps parseError discrimination in one place): employer list/transition/hire functions, learner application-status/withdraw, admin overview/export — every fetch AbortController-equipped (A-406), 401 → SessionRequiredError reuse (engine-client.ts:126-131), no new error classes. | Every prior cross-boundary wire (PostingSummary D-084, employer.ts D-093) rides exactly this rail from day one; the placement surface is a new cross-boundary contract and the pins make drift structurally detectable (G-108 discipline); the 403 cross-entity arm needs no client-side class — components render the honest "not your application" state from EngineError.status. | 0.85 |
+| D-111 | Testing doctrine = **`tests/placements/` mirroring D-096: real flows against create_app + TestClient, tmp_path DBs, zero network by construction, no MockTransport (no external calls exist), mypy green with no new overrides (stdlib only — D-086)**: state-machine 409 matrix arms (every illegal move incl. backward + terminal-source), gate order pins (employer transition: no-token → 401, unclaimed → 403, foreign application → 403 — never a 409 first; learner withdraw: unallowlisted → 403, unverified → 403, foreign application → 403, terminal → 409), hired E2E (transition → PlacementRow created → ledger events chained → employer dashboard placement visible), revoke + re-hire (partial-unique arm: second active placement on the same application → IntegrityError surfaced), **hash-chain tamper tests** (direct row mutation via a second engine → verification walk fails; fork attempt → UNIQUE(prev_hash) surfaces), **export determinism** (two exports → identical chains + head, generated_at excluded), learner visibility (history + placement confirmation), reporting counts (distinct-learner rule: one learner, two placements → counts once). `tests/placements/conftest.py` carries the G-313-shape autouse reset for the marketplace apply-rate limiter module state (the withdraw route rides it — tests/marketplace/conftest.py:123-131 pattern) — the suite cannot self-429. | The billing/employers suites are the proven template (behavior over the real app, real scrypt, honest assertions); the tamper and determinism tests are THIS milestone's reason to exist — an audit ledger nobody has tried to break is theater; the limiter reset is the G-13 lesson applied before it ships (v0.10 caught it only after flaky archaeology). | 0.85 |
+| D-112 | Migration/compat = **9th D-027 store, tables `placement` + `placement_event` on the shared DB file, `SQLModel.metadata.create_all` idempotent — zero migration** (the D-095 shape verbatim): `SQLitePlacementStore` mirrors employers/store.py mechanics exactly (WAL/synchronous=NORMAL/busy_timeout/foreign_keys pragmas at connect, `sa_type` portable columns, `_validate`/`_normalize` hooks, Protocol + SQLite impl pair, surfaced IntegrityError, tz-aware↔naive normalization, `_constraint_error` helper); bare `placement` is FREE (D-095's prefix rule was collision-driven — marketplace owns `posting`/`employer`/`application`, no `placement` table exists); the marketplace `application` table gains NO new columns (status is already a plain str column, store.py:211 — the D-099 vocabulary extends the validated set, existing `submitted` rows stay valid); lifespan wiring = the getattr-guard template (main.py:195-200) + `close()` in the finally block (main.py:336); routers mount in main.py beside the employers block (main.py:400-411). No new dependencies (hash chain is stdlib `hashlib`/`json`; export is pydantic + `JSONResponse`). | Seven prior stores never broke an existing DB via this exact pattern (D-095's 0.90 confidence carries forward); create_all checkfirst adds the two tables to every existing deployment at next boot; the zero-dep claim stays intact (D-086/R-66) — sha256 + canonical JSON need nothing the venv lacks. | 0.90 |
+
+## Milestone v0.10 — B2B Employer Network (COMPLETE, Feature, 2026-09-30, shipped as v0.9.6)
 
 **Scope (D-085, auto-decided at SPECIFY under full autonomy D-007; founder scope confirmed 2026-09-30):** Real employer auth/accounts and employer self-serve — the milestone every prior decision sequences next: A-407 ("Real employer auth lands post-payments with the B2B employer network" — payments shipped v0.9), A-401 (employer self-serve posting management deferred pending employer auth), D-076/D-079 (operator-mediated checkout + contact-path CTAs were honest *because* no employer principals exist). Employers become principals: registered accounts with sessions, claiming their existing employer entity (the v0.6 `EmployerRow` ingested data), self-serve posting management (draft → published → closed on their own entities), self-serve checkout (the v0.9 billing catalog with employer-principal buyers instead of operator mediation), and the employer dashboard surface converting from the v0.1 mockup to real data. Rationale: the guiding outcome (≥1,000 placements) needs a self-serve employer side; the supply side (v0.6), monetization rails (v0.9), and install-anywhere distribution (v0.8) are all in place — the employer network is the missing B2B surface that unlocks CIRR tracking (REQ-F-020 needs employer-side placement data) and closes the last mock-only surface. Confidence 0.80 ≥ threshold 0.60 (D-007).
 

.ciagent/REQUIREMENTS.md

@@ -1,5 +1,41 @@
 # Nextcraft — REQUIREMENTS.md
 
+## v0.11 Requirements (ACTIVE — Placement Tracking and Audit, Feature; branch `milestone/v0.11-placement-tracking`)
+
+**Milestone type: Feature** — CIRR-style placement tracking and audit (REQ-F-020 activated per D-098). Tags on the v0.10.x line (P0 → v0.10.0 … P6 → v0.10.6 = milestone release); branch `milestone/v0.11-placement-tracking`. REQ-F-020 activated as REQ-11-001..005: the placement store + evidence model (REQ-11-001), the employer-side application state machine with audit-logged transitions (REQ-11-002), the placement reporting surfaces (REQ-11-003), the audit-grade export (REQ-11-004), learner-side placement visibility (REQ-11-005). Mock-first doctrine holds (no external systems, no third-party auditor integration — the export is the deliverable); tests never call a cloud.
+
+### Placement Store + Evidence Model
+
+| ID | Description | Priority | Phase | Status |
+|----|-------------|----------|-------|--------|
+| REQ-11-001 | Placement store + evidence model: `ai_service/placements/` module (D-031 extend pattern — 9th D-027 store family, shared DB file, `create_all` idempotent): `PlacementRow` (id, learner_id, employer_id, posting_id, application_id, role_title, start_date, status, created_at, decided_at) with partial UNIQUE on `application_id` WHERE status='active' — one ACTIVE placement per application, revoked rows stay in history (D-102, the G-316 conditional-uniqueness shape); `PlacementEventRow` (append-only ledger: application_id nullable+indexed, placement_id nullable, event_type, actor_type, actor_ref, payload, prev_hash, hash, created_at) — one global hash chain, sha256 over canonical JSON + prev_hash, `UNIQUE(prev_hash)` fork backstop (D-101), tamper-evident by append-only discipline + hash chain (the chain makes silent rewrites detectable, G-301-class integrity); evidence links resolved from existing rows only (posting ref from postings store, application ref from applications store, employer ref from the claimed entity — G-302 doctrine: never trust denormalized copies); SQLModel typed access, Protocol + SQLite impl pair (the employer-store pattern), tz-normalization, fail-closed on unknown inputs | critical | 1 | complete (v0.10.1) |
+
+### Application State Machine
+
+| ID | Description | Priority | Phase | Status |
+|----|-------------|----------|-------|--------|
+| REQ-11-002 | Employer-side application state machine: the v0.6 `ApplicationRow.status` extends from `submitted`-only to the hiring lifecycle (submitted → in_review → interview → offer → hired / rejected / withdrawn — forward-only with skip-forward, terminals have no outgoing edges, D-099; withdrawn learner- or operator-initiated, all others employer-principal-driven); transitions via per-target employer routes under `/v1/employers/applications` (`/{id}/in-review`, `/{id}/interview`, `/{id}/offer`, `/{id}/reject`, `/{id}/hire` with `{role_title, start_date}` — D-105) gated by the employer session + claimed-entity authorization (the posting's employer must be the session's claimed entity — 403 otherwise, G-311 gate order); every transition appends the placement ledger in the SAME transaction as the status write (application events + placement events on hired — D-100); rejected/withdrawn/hired are terminal with different semantics (hired creates the PlacementRow + role_title + start_date payload); admin routes retain operator oversight (admin transition + audit, the D-094 lane); learner read access stays the existing surface (their own application status history); G-319 scoping: learner identifiers become visible on employer surfaces only for applications on the session's claimed-entity postings (the own-postings list stays counts-only) | critical | 2 | complete (v0.10.2) |
+
+### Placement Reporting
+
+| ID | Description | Priority | Phase | Status |
+|----|-------------|----------|-------|--------|
+| REQ-11-003 | Placement reporting: aggregate placement counts computed from the ledger (per employer, per cohort month, cumulative toward the ≥1,000 guiding outcome); per-employer placement view (the employer dashboard gains a placements section — their hired applications with role/start date, honest empty states); per-learner view (the learner's application list gains outcome states); admin placement overview (the moderation page's network section gains aggregate counts + per-employer placement lists — the operator lane); counts join through existing stores (employer identity via claimed entities, learner via applications, posting via postings) | high | 3 | complete (v0.10.3) |
+
+### Audit Export
+
+| ID | Description | Priority | Phase | Status |
+|----|-------------|----------|-------|--------|
+| REQ-11-004 | CIRR-style audit export: admin-gated export routes (`GET /v1/placements/admin/export` + `GET /v1/placements/admin/export/summary`, text/markdown — D-108) producing the third-party-auditor dataset: (a) a cohort snapshot (all placements with employer refs, role titles, start dates, evidence chains); (b) per-placement evidence bundles (posting record, application record, state-transition history, decision provenance — each link resolved from source rows, never denormalized copies); (c) a methodology document (how a placement is defined, counted, and verified — the counting rules an auditor needs); (d) the event-ledger chain with head hash (tamper-evidence for the export itself); output as JSON + a human-readable summary; honest scoping (pilot scale: the export covers every placement in the DB, unbounded by date); export integrity test (re-export reproduces identical event chains + head hash, generated_at excluded — D-108) | critical | 4 | complete (v0.10.4) |
+
+### Learner Placement Visibility
+
+| ID | Description | Priority | Phase | Status |
+|----|-------------|----------|-------|--------|
+| REQ-11-005 | Learner-side placement visibility: the learner application surface gains outcome visibility via `GET /v1/marketplace/applications/{application_id}?learner_id=` (current status + full timestamped state history + placement record when hired — D-104) and `POST /v1/marketplace/applications/{application_id}/withdraw` (learner-gated per the D-043 composition: G-5 allowlist → verified 18+ → apply-rate window); placement confirmation (when hired, the learner sees the placement record — role title, employer, start date — sourced from the same ledger); no learner-initiated edits beyond withdrawn (status changes are employer/admin-driven only); the talent profile's placement badge stays absent until a placement exists (honest, the A-304 doctrine — no badge on the v0.1 mock pages) | medium | 5 | complete (v0.10.5) |
+
+---
+
 ## v0.10 Requirements (Complete — B2B Employer Network, Feature; shipped as v0.9.6)
 
 **Milestone type: Feature** — real employer auth/accounts + employer self-serve (the B2B employer network; activated per D-085). Shipped on the v0.9.x line (P0 → v0.9.0 … P6 → v0.9.6 = milestone release); branch `milestone/v0.10-b2b-employer-network`. All 5 requirements complete: the employer auth foundation with scrypt credentials + hashed sessions + throttles (REQ-10-001), the entity claim/verify flow with advisory evidence + admin approval (REQ-10-002), the dashboard real-data conversion with honest states (REQ-10-003), self-serve postings through the shared D-091 entitlement gate byte-identical with the admin path (REQ-10-004), self-serve checkout over the v0.9 catalog through the real webhook path + the admin network overview (REQ-10-005). Auth is session-based with hashed credentials (mock-first doctrine: no external auth provider, tests never call a cloud); admin operator routes are retained unchanged (D-043 composition untouched).
@@ -362,7 +398,7 @@
 | REQ-F-017 | Identity verification and age-gating (16+/18+) — real KYC backend | high | v0.5 | activated → complete (REQ-5-003/004) |
 | REQ-F-018 | Payment processing and subscription management | high | v0.9 | activated → REQ-9-001..005 |
 | REQ-F-019 | Human tutor marketplace (third-party courses) | medium | v0.4+ | deferred |
-| REQ-F-020 | CIRR-style placement tracking and audit | medium | v0.5+ | deferred |
+| REQ-F-020 | CIRR-style placement tracking and audit | medium | v0.5+ | activated → REQ-11-001..005 |
 
 ---
 
@@ -382,6 +418,16 @@
 
 ## Traceability Matrix
 
+### v0.11 (active)
+
+| Requirement | Phase | Status |
+|-------------|-------|--------|
+| REQ-11-001 | 1 | planned |
+| REQ-11-002 | 2 | planned |
+| REQ-11-003 | 3 | planned |
+| REQ-11-004 | 4 | planned |
+| REQ-11-005 | 5 | planned |
+
 ### v0.6 (complete)
 
 | Requirement | Phase | Status |

.ciagent/RESEARCH.md

@@ -1,3 +1,305 @@
+# Nextcraft — RESEARCH.md (v0.11 Phase 0 RESEARCH — Placement Tracking and Audit)
+
+## v0.11 research conclusions (Phase 0 RESEARCH, 2026-10-01)
+
+In-tree census of the placement-tracking surface, 2026-10-01, plus
+audit-convention findings (CIRR methodology, hash-chained ledgers, ATS
+stage models, evidence-bundle formats) grounded in audit practice and
+marked [convention] vs [pilot adaptation] — no web access in this
+environment; the methodology text is written to stand on its own
+definitions with CIRR kept as naming, not citation. Binding clarify
+decisions D-099..D-112 are NOT re-litigated; this research
+operationalizes them. Probes: marketplace/store.py (ApplicationRow +
+insert_application + transition machines), employers/store.py (the
+8th store + G-316 partial index + decide_claim transaction), billing/
+(store.py matrix + event rows + concurrent-test precedent), api/
+employers.py + marketplace.py + employers_admin.py +
+marketplace_admin.py (gates + provenance + throttles), main.py
+(lifespan + routers + CORS + boot warning), engine-client.ts +
+pins.test.ts + packages/types/ (web rails), tests/employers/ +
+tests/marketplace/ + tests/billing/ (suite layouts + conftest
+resets), employer/admin web surfaces (D-109's four surfaces).
+
+**R-67. CIRR methodology transfers as disclosure discipline; three
+pilot gaps must be stated in the export methodology (R-67/R-68).**
+[convention] CIRR-style audits rest on four load-bearing parts: a
+placement definition (in-field role, FTE, exclusions for
+self-employment), cohort construction with stated denominators,
+employer-verified evidence sampled by an independent auditor, and
+disclosure discipline (methodology published beside the numbers,
+self-reported vs employer-verified labeled separately). [pilot
+adaptation] v0.11's employer-principal attestation (authenticated
+`hire` by a claim-verified employer — employers.py:173-191/:467-484,
+claim approval with provenance employers/store.py:583-655) is a
+stronger evidence class than learner self-report but is NOT CIRR-grade
+employer verification. The methodology JSON must state three gaps
+honestly: (a) no minimum-employed-duration check (a placement = a
+recorded hire, not a 90-day sustained role), (b) no salary (D-098),
+(c) verification is employer-attestation + operator oversight, not
+third-party employment verification. D-107's distinct-learner counting
+matches CIRR's placed-graduate semantics for a cumulative north star;
+CIRR reports cohort RATES over denominators, which v0.11 deliberately
+does not claim at pilot. Confidence 0.75.
+
+**R-68. The methodology section writes itself from in-tree facts.**
+`placement_definition` = a PlacementRow created by the hired
+transition, employer-attested role_title + start_date, active at
+export time, one active placement per application (partial unique, the
+G-316 shape employers/store.py:159-167); `counting_rules` = distinct
+learners with ≥1 active placement, all-time cumulative, revoked
+excluded, cohort month = start_date calendar month (D-107);
+`verification` = each evidence bundle carries the source posting +
+application records + full transition ledger whose global sha256 chain
+re-walks from GENESIS_HASH to head_hash (D-101); `scope` =
+pilot-bounded, every placement in the DB, evidence is
+employer-principal attestation. The methodology text must name the
+three R-67 gaps explicitly — an audit methodology that omits its own
+verification limits is A-304-class dishonesty. Cohort divergence is
+deliberate and documented: employment-start month, not graduation
+cohort (no graduation events exist in a marketplace). Confidence 0.85.
+
+**R-69. D-101's global hash chain sits in the well-trodden
+blockchain-less tamper-evidence lane (CT, git, rekor).** A global
+linear chain with one head is the right pilot shape — one walk
+recomputes everything; Merkle trees buy proof-efficiency nobody needs
+at thousands of events. The UNIQUE(prev_hash) fork backstop has direct
+prior-art analog; G-316 proves SQLite unique/partial indexes emit
+correctly through create_all and surface IntegrityError
+(employers/store.py:398-400). Canonical-serialization rules: sort_keys
++ separators pinned; datetime formatting must be NORMALIZED (R-79);
+avoid floats in payload entirely (str/int/bool/None only); sha256
+hexdigest is the D-087 token pattern (employers/store.py:230) —
+stdlib-only, zero new deps. No backfill: pre-v0.11 submitted rows
+carry only their created_at (marketplace/store.py:873-901) — honest
+absence per A-304. Confidence 0.85.
+
+**R-70. The hash covers the row's own autoincrement id → the append
+must be flush-then-hash-then-commit inside one transaction, and ALL
+appends funnel through the one transition_application method (D-100).**
+Within one Session: read head (ORDER BY id DESC LIMIT 1), construct
+row with prev_hash=head, session.flush() to obtain the id, compute
+hash = sha256(canonical_json + prev_hash), set the column, commit.
+Nearest in-tree template: decide_claim (employers/store.py:600-652 —
+get → guard → mutate → flush → append audit → commit). Corollaries:
+(1) a second append path would race on prev_hash (the UNIQUE backstop
+catches it as a lost event — IntegrityError); (2) the ledger must have
+NO delete path (INTEGER PRIMARY KEY reuses max+1 if the top row is
+deleted — D-111's tests pin zero DELETE methods + no DELETE SQL
+anywhere). Verification cost at pilot: O(n) sha256 over tiny rows —
+milliseconds for thousands of events; the export embeds every event so
+the auditor's walk is offline. Confidence 0.80.
+
+**R-71. ATS prior art confirms forward-only-with-skip-forward; the
+exclusions are genuinely excludable (D-099).** Real ATSs allow backward
+moves because they manage scheduling and offers — which D-98 excludes.
+At pilot, `submitted → hired` fast-track matches how small-scale hiring
+actually proceeds. Terminals-with-no-outgoing-edges is the tree's own
+discipline (billing/store.py:84-90, marketplace/store.py:609-632,
+InvalidTransition → 409 at :289). No interview scheduling (no calendar
+surface exists — A-408), no offers machinery (no document generation),
+no email (no mail transport — D-097 precedent). The matrix constant
+belongs in placements/base.py (CANONICAL_EVENT_NAMES shape,
+billing/base.py:71-78); the 409-matrix test arms mirror billing's
+test_legal_transitions/test_illegal_transition_raises/test_cancelled_is_terminal
+trio (tests/billing/test_store.py:400-418) plus skip-forward arms.
+Zero data migration: existing rows are all `submitted`
+(marketplace/store.py:211) — a valid matrix start. Confidence 0.85.
+
+**R-72. D-100's cross-store single-transaction write is mechanically
+sound on the shared file.** Every D-027 store builds its own engine on
+the same db_path with identical pragmas (WAL/synchronous=NORMAL/
+busy_timeout=5000/foreign_keys=ON — marketplace/store.py:277-286);
+multiple engines on one file is the SHIPPED topology (8 stores).
+SQLModel's metadata is global — create_all on any engine creates every
+registered table (employers/store.py:400), so the placements store
+writes ApplicationRow through one Session on its own engine without
+bringing up the marketplace store. Importing across modules is
+family-sanctioned (employers/base.py:39 imports marketplace.base).
+decide_claim is the exact all-or-nothing precedent
+(employers/store.py:634-652). Guardrails: NO cross-family foreign keys
+(G-302 ID references at read); the store must tolerate being
+constructed against a fresh file (global metadata + idempotent
+create_all covers it). The two-commit alternative's crash window (status
+changed, no ledger row) is precisely the tamper-evidence void the
+milestone sells. Confidence 0.85.
+
+**R-73. Export determinism needs three pinned rules (D-108).**
+(1) Ordering — events by id (chain order); cohort/summary lists by
+pinned sorts (cohort month ascending; placements by created_at then id
+— the list_postings discipline, marketplace/store.py:940-948); pydantic
+declaration-order serialization is deterministic but set-derived lists
+would not be. (2) generated_at exclusion must be TOTAL — compare
+parsed documents field-by-field or strip the key before comparison.
+(3) Float absence — every export value str/int/bool; no ratios or
+percentages (counts are integers by construction, D-107). The summary
+generated from the same JSON is the anti-drift rule. Zero new deps
+(JSONResponse + pydantic in-tree; D-112 holds). Confidence 0.80.
+
+**R-74. Service seams verified for D-112.** Store lifespan wiring:
+the getattr-guard template at main.py:182-190 (billing)/195-200
+(employers) — placements slots in beside employers; close() in the
+finally block main.py:335-336; router mounting beside the employers
+block main.py:400-411; learner routes mount from the existing
+marketplace router (no new mount — D-104), placements_admin mounts
+beside employers_admin; CORS already carries Authorization
+(main.py:357 — no change); the G-11 admin boot warning main.py:251-256
+covers the placements admin free. deps.py gains get_placement_store
+beside get_employer_store (deps.py:98). create_all checkfirst is the
+probe-verified D-095 shipped behavior (employers/store.py:398-400).
+Confidence 0.90.
+
+**R-75. API gates verified for D-104/D-105/D-106.** require_employer_session
+(employers.py:173-191, 401 class, returns (session, account));
+_require_claimed (employers.py:467-484, 403 + claim-CTA);
+_own_posting_or_404 (employers.py:487-503). The application-scoped
+cross-entity arm is the same shape through the application's posting:
+fetch application → posting → employer_id != claimed → 403. G-311
+gate order is test-pinned (tests/employers/test_postings_write.py:225-
+234). Per-target route idiom: employers.py:635 (publish)/:687 (close).
+Provenance: `"account:{account.id}"` (employers.py:792). Learner stack:
+_enforce_allowlist (marketplace.py:46-52) → require_verified_age(18)
+(:358) → _check_apply_rate (:359; window :66-76, module state
+_APPLY_TIMES :58, cap 5/60s :63) — withdraw composes the identical
+stack, actor_type=learner. Operator lane: require_admin imports from
+marketplace_admin (employers_admin.py:47; guard marketplace_admin.py:
+62-85, fail-closed dual-header); OPERATOR="operator"
+(employers_admin.py:54); the applications-review precedent
+(marketplace_admin.py:420-443) already exposes learner_id to the
+operator — unchanged. Token namespaces cannot collide (D-090 —
+hash-lookup vs env-compare, verified in both guards). Confidence 0.90.
+
+**R-76. Web rails verified for D-109/D-110.** engine-client.ts
+sections in order: identity :351, marketplace :545 (applyPosting :647-
+656), search :659, resume :730, billing :773, entitlements :782, admin
+transport :843 (adminToken :815), employer auth :918 —
+SessionRequiredError :126-131, ClaimRequiredError :136, parseError
+:146 (401/403 discrimination); a placements section appends after
+employer billing (:1114). pins.test.ts: marketplace :48-133, billing
+:203-230, employer dual-schema :267-374 (field-for-field + status-union
+regex pins — the D-110 template), G-319 own-postings block :376+.
+packages/types/ carries billing/employer/marketplace — placement.ts is
+the fourth. Four surfaces: employer overview (app/(employer)/employer/
+page.tsx:25 → employer-overview-client.tsx — real postings/counts
+:162/:190-230, the mock-labeled placement metrics block :335-372
+labelled "(mock — no backend computes this)" :351 — the real
+placements section REPLACES that mock block); /employer/applications
+page is NEW beside postings/login/register/billing/talent; job-detail-
+client.tsx is the learner apply surface (apply :95-115, EngineError
+409/404 discrimination :103-105, confirmation render :253 — the
+status panel composes the same discipline, no new classes); moderation
+page (app/(admin)/admin/moderation/page.tsx:3/:35 →
+employer-network-panel.tsx:56, adminToken/locked-state :28-40) gains
+the placements block. Talent-profile badge stays absent — talent pages
+are v0.1 mock imports; a badge on a mock page is fabricated placement
+(A-304). Confidence 0.90.
+
+**R-77. Test suites verified for D-111.** tests/employers/ (16 files)
+is the D-096 layout; tests/marketplace/conftest.py:123-131 is the
+G-313-shape autouse reset (_reset_apply_rate_window clears _APPLY_TIMES
+before/after every test — the withdraw route rides this limiter, so
+tests/placements/conftest.py MUST replicate it or the suite
+self-429s); tests/employers/conftest.py:31-33 same pattern for the two
+employer throttles. Hermeticity: tmp_path DBs, state-injected stores
+via create_app (tests/marketplace/conftest.py:80-120 make_client),
+zero network via root conftest. Matrix arms template:
+tests/billing/test_store.py:400-418. Partial-index pin template:
+tests/employers/test_claims_store.py:75-88 (SELECT from sqlite_master
+asserting the index SQL — applies to the placement partial unique,
+D-102). Gate-order pins: tests/employers/test_postings_write.py:315
+(cross-entity 403), tests/marketplace/test_marketplace_api.py:188
+(invalid transitions 409). G-319 pin SPLIT needed (D-105): counts-only
+stays on the own-postings list (test_postings_read.py:216); learner_id
+appears on application-scoped responses for own-posting applications;
+cross-entity → 403 with no application data. Confidence 0.85.
+
+**R-78. SQLite two-store cross-write interplay safe at pilot; two WAL
+facts to pin.** (1) The marketplace store's own application writes are
+idempotent inserts (insert_application :873-901) that never touch
+status after creation — the placements store is the ONLY status writer
+post-creation; state the COLUMN-level ownership in the plan (no second
+status writer outside the one-transaction discipline). (2) The tamper
+test's second engine on the same file sees WAL snapshot isolation —
+the mutation must commit before the verification walk reads it
+(Session context-managers guarantee). Multi-session contention on one
+file is already exercised in-tree (test_concurrent_consumes_one_post_left,
+tests/billing/test_store.py:335). busy_timeout=5000 is generous for
+hiring-transition volumes (rare events, not hot-path). Confidence 0.80.
+
+**R-79. Three clocks, three serialization rules.** (1) start_date is
+a calendar date — timezone-free, ISO YYYY-MM-DD in SQLite, cohort
+month = strftime("%Y-%m"); no datetime coercion in its path. (2)
+created_at/decided_at are UTC datetimes stored NAIVE in SQLite,
+re-labeled tz-aware on read (_as_utc, marketplace/store.py:263-267 —
+the family pattern). The hash-serialization pitfall: datetime.isoformat()
+emits +00:00 for aware, nothing for naive — the chain's canonical JSON
+must pin ONE normalization (always _as_utc(dt).isoformat(), or a fixed
+YYYY-MM-DDTHH:MM:SSZ format) and the tamper tests catch drift between
+the hashing and reading paths. (3) generated_at is export-only
+metadata, excluded from determinism (D-108 — a function of the request,
+not the rows). Privacy (G-319 supersession): learner_id is an opaque
+allowlisted handle (the G-5 roster), not name/email/DOB — identity PII
+never stored (identity/base.py:25-33), the 422 scrubber's pii_fields
+(main.py:439) never sees learner_id; exposure bounded to opaque handles
+on the employer's own applicants, cross-entity 403 preserves
+anti-enumeration. start_date is not PII-class. Confidence 0.85.
+
+**R-80. Coherence gap found: re-hire after revoke is UNREACHABLE
+through the D-099 matrix — PLAN must pin the operator re-hire as a
+placement-level route.** After the first hire the application is
+`hired` — terminal, no outgoing edges; D-106 validates the operator's
+generic route against the same matrix, so `hired → hired` is a 409 on
+every surface; the revoke itself (active → revoked, D-102) leaves the
+application hired — correct — but no matrix-legal path creates the
+fresh placement D-102 promises. Candidate shapes: (a) an explicit
+operator re-hire route (POST /v1/placements/admin/placements/
+by-application/{application_id}/re-hire {role_title, start_date})
+creating the fresh PlacementRow + a `placement.rehired` ledger event
+(actor operator) WITHOUT touching the application's terminal status —
+audit-coherent: the ledger shows hired → revoke → rehire as three
+events, never fabricating a second application transition; (b) matrix
+amendment hired → hired operator-only — REJECTED (breaks the terminals
+rule, and "the application was hired twice" is false); (c) revoke +
+full reapplication — REJECTED (a new application may be impossible on
+a closed posting, and it orphans the learner from the count — exactly
+what D-102 exists to prevent). Shape (a) is coherent: placements, not
+applications, are the correction lane (D-102's own framing); the
+partial unique index makes it safe (revoked rows don't match WHERE
+status='active' — the exact G-316 property that makes
+claim-rejection-free-reclaim work, employers/store.py:159-167). The
+ledger event vocabulary (D-101) admits this event type; D-111's revoke
++ re-hire test arm is unaffected. Confidence 0.80.
+
+## Open risks (v0.11, tracked into PLAN)
+
+1. **Re-hire-after-revoke coherence gap (R-80)** — pin the operator
+   re-hire as a placement-level route + `placement.rehired` ledger
+   event, never an application transition. Changes route list, event
+   vocabulary, and a test arm.
+2. **Hash-after-flush write shape (R-70)** — flush-then-hash-then-commit
+   inside one transaction; ALL appends through the one
+   transition_application method; no-delete-path pin.
+3. **created_at canonical serialization (R-79/R-69)** — pin ONE
+   normalization (_as_utc(dt).isoformat() or fixed Z-format) or the
+   chain breaks on its first re-read.
+4. **_APPLY_TIMES limiter reset (R-77)** — tests/placements/conftest.py
+   must replicate the autouse reset or the suite self-429s (G-313).
+5. **Methodology honesty block (R-67/R-68)** — the three pilot gaps
+   stated explicitly in the export methodology.
+6. **Export determinism rules (R-73)** — pinned list orderings, total
+   generated_at exclusion, float absence.
+7. **Status-column ownership (R-78)** — placements store is the only
+   post-creation writer of application.status; state it column-level.
+8. **G-319 supersession pin split (R-77)** — counts-only stays on the
+   own-postings list; learner_id on application-scoped routes only.
+9. **Concurrent-transition arm (R-78)** — one-winner-one-IntegrityError
+   on truly concurrent transition_application calls (the billing
+   concurrent-consumption test shape).
+10. **CIRR specifics from knowledge, not live sources (R-67)** — the
+    methodology text stands on its own definitions; CIRR is naming,
+    not citation.
+
+---
+
 # Nextcraft — RESEARCH.md (v0.10 Phase 0 RESEARCH — B2B Employer Network)
 
 ## v0.10 research conclusions (Phase 0 RESEARCH, 2026-09-30)

.ciagent/ROADMAP.md

@@ -2,6 +2,8 @@
 
 ## Overview
 
+**Milestone v0.11 — Placement Tracking and Audit (ACTIVE, started 2026-10-01).** Feature milestone: CIRR-style placement tracking and audit (REQ-F-020 activated per D-098) — the machinery that makes the guiding outcome (≥1,000 placements, CIRR-style third-party audit) measurable: the placement store + hash-chained evidence ledger, the employer-side application state machine (submitted → in_review → interview → offer → hired/rejected/withdrawn), placement reporting surfaces (per-employer, per-learner, aggregate toward ≥1,000), the audit-grade export (cohort snapshot + evidence bundles + methodology + chain head), learner-side placement visibility. Tags on the v0.10.x line (P0 → v0.10.0 … P6 → v0.10.6 = milestone release); branch `milestone/v0.11-placement-tracking`.
+
 **Milestone v0.10 — B2B Employer Network (COMPLETE, shipped as v0.9.6, 2026-10-01).** Feature milestone: real employer auth/accounts + self-serve (D-085). Employers become principals — registered accounts with sessions, employer-entity claim/verify, the employer dashboard converting from the v0.1 mockup to real data, self-serve posting management with the v0.9 entitlement enforcement intact, and self-serve checkout over the v0.9 billing catalog (superseding D-076 operator mediation; admin operator routes retained as fallback + oversight). Tags on the v0.9.x line (P0 → v0.9.0 … P6 → v0.9.6 = milestone release); branch `milestone/v0.10-b2b-employer-network`.
 
 **Milestone v0.9 — Payment Engine (COMPLETE, shipped as v0.8.6, 2026-09-30).** Payment processing and subscription management (REQ-F-018 activated per D-074): the billing module (provider protocol mock+stripe, 7th D-027 store, HMAC webhooks), catalog + pricing surface, operator-mediated checkout, entitlement enforcement, full subscription lifecycle. Founder scope decision D-074; clarify D-075..D-084; grill G-301+. Tags on the v0.8.x line (v0.8.0 phase 0 → v0.8.6 final = milestone release); branch `milestone/v0.9-payment-engine`.
@@ -36,7 +38,21 @@ Payment processing and subscription management (REQ-F-018 activated per D-074, a
 
 ## Phase List
 
-### v0.10 (complete)
+### v0.11 (active)
+
+| # | Name | Status | Depends On | Requirements | Success Criteria |
+|---|------|--------|------------|--------------|------------------|
+| 0 | Pre-execution | active | — | — | Specify (D-098), clarify, research, plan, grill, MVP/UX check |
+| 1 | Placement store + evidence ledger | complete (v0.10.1) | 0 | REQ-11-001 | `ai_service/placements/` module: 9th D-027 store (PlacementRow + PlacementEventRow, hash-chained append-only ledger), evidence resolved from source rows only (G-302 doctrine), `create_all` idempotent on the shared DB file, Protocol + SQLite pair |
+| 2 | Application state machine | complete (v0.10.2) | 1 | REQ-11-002 | Employer routes extend the v0.6 application status from submitted-only to the full hiring lifecycle; claimed-entity authorization (403 cross-entity, G-311 gate order); every transition ledger-logged; hired creates the placement; admin oversight retained |
+| 3 | Placement reporting | complete (v0.10.3) | 2 | REQ-11-003 | Aggregate counts from the ledger (per employer, per cohort month, cumulative toward ≥1,000); employer dashboard placements section; learner outcome states; admin network overview counts |
+| 4 | Audit export | complete (v0.10.4) | 3 | REQ-11-004 | Admin-gated export: cohort snapshot + per-placement evidence bundles + methodology doc + chain head hash; JSON + human-readable summary; re-export reproducibility test |
+| 5 | Learner placement visibility | complete (v0.10.5) | 4 | REQ-11-005 | Learner application outcomes + full state history; hired learners see their placement record; honest no-badge-until-placed (A-304) |
+| 6 | Final review + ship | planned | 1-5 | — | Review clean; audit pass; milestone tagged v0.10.6 (final v0.10.x patch = milestone release); release with full asset matrix + registry image; milestone merged to main |
+
+---
+
+## Phase List (v0.10 — complete)
 
 | # | Name | Status | Depends On | Requirements | Success Criteria |
 |---|------|--------|------------|--------------|------------------|

.ciagent/config.json

@@ -46,9 +46,9 @@
   "projects": [],
   "active_project": null,
   "milestone": {
-    "version": "v0.10",
-    "name": "b2b-employer-network",
+    "version": "v0.11",
+    "name": "placement-tracking",
     "type": "feature",
-    "branch": "milestone/v0.10-b2b-employer-network"
+    "branch": "milestone/v0.11-placement-tracking"
   }
 }

apps/ai-service/ai_service/api/deps.py

@@ -13,6 +13,7 @@ from ..grading.store import GradeStore
 from ..llm.base import LLMProvider
 from ..marketplace.embedding.base import EmbeddingProvider
 from ..marketplace.store import MarketplaceStore
+from ..placements.store import PlacementStore
 from ..sandbox.manager import SandboxManager
 from ..sandbox.workdir import SandboxDir
 from ..telemetry.ingest import TraceIntegrityMap
@@ -101,6 +102,13 @@ def get_employer_store(request: Request) -> EmployerStore:
     return request.app.state.employer_store
 
 
+def get_placement_store(request: Request) -> PlacementStore:
+    """v0.11 placements (D-100/D-112): the same app.state DI territory
+    rule — placement routes compose the store via app.state, never
+    import it."""
+    return request.app.state.placement_store
+
+
 def get_embedding_provider(request: Request) -> EmbeddingProvider:
     """v0.6 P3 (D-051): the embedding port via app.state DI — the
     search route + publish hooks compose it, never import it."""

apps/ai-service/ai_service/api/employers.py

@@ -38,6 +38,7 @@ import secrets
 import time
 import uuid
 from collections import deque
+from datetime import UTC, date, datetime
 from typing import Annotated
 
 from fastapi import APIRouter, Depends, Header, HTTPException, Request
@@ -71,13 +72,30 @@ from ..llm.base import LLMProvider
 from ..marketplace.base import Posting
 from ..marketplace.enrichment import maybe_enrich_on_publish
 from ..marketplace.search import embed_posting
-from ..marketplace.store import InvalidTransition, MarketplaceStore
+from ..marketplace.store import (
+    InvalidTransition,
+    MarketplaceStore,
+)
 from ..marketplace.tagging import TaggingUnavailable, tag_posting
+from ..placements.base import (
+    APPLICATION_STATUSES,
+    ApplicationTransitionResponse,
+    EmployerApplicationsResponse,
+    EmployerApplicationSummary,
+    EmployerPlacementsResponse,
+    HireTransitionRequest,
+    PlacementRead,
+)
+from ..placements.base import (
+    InvalidTransition as PlacementInvalidTransition,
+)
+from ..placements.store import PlacementRow, PlacementStore
 from .deps import (
     get_billing_store,
     get_embedding_provider,
     get_employer_store,
     get_marketplace_store,
+    get_placement_store,
     get_provider,
     get_settings,
 )
@@ -715,6 +733,243 @@ async def close_own_posting(
     )
 
 
+# -- hiring pipeline (v0.11 P2, Task 2-1-01 — REQ-11-002, D-105/G-311) ---------------
+
+
+def _own_application_or_404(
+    store: MarketplaceStore, application_id: str, employer_id: str
+) -> None:
+    """Fetch the application → its posting → enforce the cross-entity
+    arm (D-105: the _own_posting_or_404 shape applied THROUGH the
+    application's posting — another entity's application → 403 with
+    NO application data; unknown → 404). G-319: learner_id never
+    rides this arm's error responses."""
+    application = store.get_application(application_id)
+    if application is None:
+        raise HTTPException(
+            status_code=404,
+            detail=f"no application with id {application_id!r}",
+        )
+    posting = store.get_posting(application.posting_id)
+    if posting is None:  # pragma: no cover - FK discipline keeps rows paired
+        raise HTTPException(
+            status_code=404,
+            detail=f"no posting with id {application.posting_id!r}",
+        )
+    if posting.employer_id != employer_id:
+        raise HTTPException(
+            status_code=403,
+            detail="this application belongs to another employer entity",
+        )
+
+
+def _placement_read(row: PlacementRow) -> PlacementRead:
+    return PlacementRead(
+        id=row.id,
+        learner_id=row.learner_id,
+        employer_id=row.employer_id,
+        posting_id=row.posting_id,
+        application_id=row.application_id,
+        role_title=row.role_title,
+        start_date=date.fromisoformat(row.start_date),
+        status=row.status,  # type: ignore[arg-type]
+        created_at=row.created_at or datetime.now(UTC),
+        decided_at=row.decided_at or datetime.now(UTC),
+    )
+
+
+def _employer_transition(
+    application_id: str,
+    to_status: str,
+    account: AccountRow,
+    marketplace: MarketplaceStore,
+    placements: PlacementStore,
+    employer_store: EmployerStore,
+    role_title: str | None = None,
+    start_date: date | None = None,
+) -> ApplicationTransitionResponse:
+    """The shared per-target transition composition (D-105): G-311
+    gate order — session (the route dep) → claim (_require_claimed) →
+    cross-entity (_own_application_or_404) → the ONE store transition
+    (409 on matrix-illegal, NEVER before the 403s) + the
+    employer_audit_events append (the D-089 one-queryable lane)."""
+    employer_id = _require_claimed(account)
+    _own_application_or_404(marketplace, application_id, employer_id)
+    try:
+        application, placement = placements.transition_application(
+            application_id,
+            to_status,
+            actor_type="employer",
+            actor_ref=f"account:{account.id}",
+            role_title=role_title,
+            start_date=start_date,
+        )
+    except PlacementInvalidTransition as exc:  # MUST precede ValueError — it subclasses it
+        raise HTTPException(status_code=409, detail=str(exc)) from exc
+    except ValueError as exc:  # hire required-fields honesty (D-103)
+        raise HTTPException(status_code=422, detail=str(exc)) from exc
+    employer_store.append_audit_event(
+        "application",
+        f"application.{to_status}",
+        account_id=account.id,
+        employer_id=employer_id,
+        detail={"application_id": application_id, "to_status": to_status},
+    )
+    return ApplicationTransitionResponse(
+        application_id=application.id,
+        status=application.status,  # type: ignore[arg-type]
+        placement=_placement_read(placement) if placement is not None else None,
+    )
+
+
+@claims_router.get("/applications", response_model=EmployerApplicationsResponse)
+async def list_own_applications(
+    status: str | None = None,
+    auth: Annotated[
+        tuple[SessionRow, AccountRow], Depends(require_employer_session)
+    ] = None,  # type: ignore[assignment]
+    store: MarketplaceStore = Depends(get_marketplace_store),
+) -> EmployerApplicationsResponse:
+    """The session employer's OWN hiring pipeline (D-105): every
+    application on the claimed entity's postings (ALL statuses), with
+    per-status facets. G-319 pin split: this APPLICATION-scoped read
+    exposes learner_id per the supersession — the own-postings LIST
+    stays counts-only."""
+    if auth is None:  # pragma: no cover - the dep raises 401 first
+        raise HTTPException(status_code=401, detail="employer session required")
+    _session, account = auth
+    employer_id = _require_claimed(account)
+    postings = store.list_postings_by_employer(employer_id)
+    applications = store.list_applications_by_postings(
+        [p.id for p in postings], status=status
+    )
+    facets: dict[str, int] = {s: 0 for s in APPLICATION_STATUSES}
+    items = [
+        EmployerApplicationSummary(
+            id=a.id,
+            posting_id=a.posting_id,
+            learner_id=a.learner_id,
+            status=a.status,  # type: ignore[arg-type]
+            created_at=a.created_at,
+        )
+        for a in applications
+    ]
+    for item in items:
+        facets[item.status] = facets.get(item.status, 0) + 1
+    return EmployerApplicationsResponse(
+        applications=items, facets=facets, total=len(items)
+    )
+
+
+def _own_transition_route(
+    to_status: str, hire: bool = False
+):
+    """Per-target route factory (D-105: the matrix stays OUT of request
+    bodies — each route's store call names its target, the publish/
+    close idiom). Only the hire route carries a body ({role_title,
+    start_date} — D-103/G-324); the others are bodyless actions."""
+
+    if hire:
+
+        async def _hire_route(
+            application_id: str,
+            auth: Annotated[
+                tuple[SessionRow, AccountRow], Depends(require_employer_session)
+            ],
+            body: HireTransitionRequest,
+            store: MarketplaceStore = Depends(get_marketplace_store),
+            placements: PlacementStore = Depends(get_placement_store),
+            employer_store: EmployerStore = Depends(get_employer_store),
+        ) -> ApplicationTransitionResponse:
+            return _employer_transition(
+                application_id,
+                to_status,
+                auth[1],
+                store,
+                placements,
+                employer_store,
+                role_title=body.role_title,
+                start_date=body.start_date,
+            )
+
+        return _hire_route
+
+    async def _action_route(
+        application_id: str,
+        auth: Annotated[
+            tuple[SessionRow, AccountRow], Depends(require_employer_session)
+        ],
+        store: MarketplaceStore = Depends(get_marketplace_store),
+        placements: PlacementStore = Depends(get_placement_store),
+        employer_store: EmployerStore = Depends(get_employer_store),
+    ) -> ApplicationTransitionResponse:
+        return _employer_transition(
+            application_id,
+            to_status,
+            auth[1],
+            store,
+            placements,
+            employer_store,
+        )
+
+    return _action_route
+
+
+claims_router.add_api_route(
+    "/applications/{application_id}/in-review",
+    _own_transition_route("in_review"),
+    methods=["POST"],
+    response_model=ApplicationTransitionResponse,
+)
+claims_router.add_api_route(
+    "/applications/{application_id}/interview",
+    _own_transition_route("interview"),
+    methods=["POST"],
+    response_model=ApplicationTransitionResponse,
+)
+claims_router.add_api_route(
+    "/applications/{application_id}/offer",
+    _own_transition_route("offer"),
+    methods=["POST"],
+    response_model=ApplicationTransitionResponse,
+)
+claims_router.add_api_route(
+    "/applications/{application_id}/reject",
+    _own_transition_route("rejected"),
+    methods=["POST"],
+    response_model=ApplicationTransitionResponse,
+)
+claims_router.add_api_route(
+    "/applications/{application_id}/hire",
+    _own_transition_route("hired", hire=True),
+    methods=["POST"],
+    response_model=ApplicationTransitionResponse,
+)
+
+
+# -- own placements (v0.11 P3, Task 3-1-01 — REQ-11-003, D-107/D-109) ---------------
+
+
+@claims_router.get("/placements", response_model=EmployerPlacementsResponse)
+async def list_own_placements(
+    auth: Annotated[
+        tuple[SessionRow, AccountRow], Depends(require_employer_session)
+    ],
+    placements: PlacementStore = Depends(get_placement_store),
+) -> EmployerPlacementsResponse:
+    """The claimed entity's OWN placements (active + revoked — the
+    full history, D-109 surface 2's data source): created_at then id;
+    honest empty state at zero placements. G-311: 401 session → 403
+    claim (never data before the gates)."""
+    _session, account = auth
+    employer_id = _require_claimed(account)
+    rows = placements.list_placements_by_employer(employer_id)
+    return EmployerPlacementsResponse(
+        placements=[_placement_read(row) for row in rows],
+        total=len(rows),
+    )
+
+
 # -- self-serve billing (P5, Task 5-1-01 — REQ-10-005, R-59/G-310) ------------------
 
 

apps/ai-service/ai_service/api/marketplace.py

@@ -16,6 +16,7 @@ from __future__ import annotations
 
 import time
 from collections import deque
+from datetime import date
 
 from fastapi import APIRouter, Depends, HTTPException, Query, Request
 from pydantic import BaseModel, Field, ValidationError
@@ -33,6 +34,15 @@ from ..marketplace.resume import (
     parse_resume,
 )
 from ..marketplace.search import FacetFilters, rank_postings
+from ..placements.base import (
+    InvalidTransition,
+    LearnerApplicationStatusResponse,
+    LearnerApplicationSummary,
+    MineApplicationResponse,
+    PlacementEventRead,
+    PlacementRead,
+)
+from ..placements.store import PlacementRow
 from .deps import get_embedding_provider, get_marketplace_store, get_provider, get_settings
 from .identity import require_verified_age
 
@@ -375,6 +385,19 @@ async def apply_posting(
     application, _created = store.insert_application(
         posting_id=body.posting_id, learner_id=body.learner_id
     )
+    # G-323 (binding): the idempotent arm NEVER confirms a terminal
+    # application — a withdrawn/rejected/hired row returns 409 (the
+    # learner is told the honest state; recovery is visibility via the
+    # application-status surface, not resurrection — no second row is
+    # ever created; the (posting_id, learner_id) unique key stands).
+    if application.status in ("withdrawn", "rejected", "hired"):
+        raise HTTPException(
+            status_code=409,
+            detail={
+                "reason": "application_terminal",
+                "status": application.status,
+            },
+        )
     return ApplyResponse(
         application_id=application.id,
         posting_id=application.posting_id,
@@ -382,6 +405,173 @@ async def apply_posting(
     )
 
 
+# -- v0.11 P2: the learner withdraw route (D-104, REQ-11-002) --------------------
+
+
+class WithdrawBody(BaseModel):
+    """D-104: the pilot surface passes learner_id in the body (the G-5
+    composition unchanged — the SAME stack as apply)."""
+
+    learner_id: str = Field(min_length=1)
+
+
+@router.post(
+    "/applications/{application_id}/withdraw", response_model=ApplyResponse
+)
+async def withdraw_application(
+    application_id: str,
+    body: WithdrawBody,
+    request: Request,
+    store=Depends(get_marketplace_store),
+    settings: Settings = Depends(get_settings),
+) -> ApplyResponse:
+    """The learner's ONLY edit (D-099: withdrawn is learner- or
+    operator-triggerable, NEVER an employer session). The D-043
+    composition UNCHANGED: G-5 allowlist → verified 18+ → the EXISTING
+    apply-rate window (no new throttle knob, D-088 scope untouched).
+    Own application only (403 foreign); terminal → 409 (the matrix).
+    """
+    _enforce_allowlist(body.learner_id, settings)
+    await require_verified_age(18, body.learner_id, _identity_store(request))
+    _check_apply_rate(body.learner_id)
+
+    application = store.get_application(application_id)
+    if application is None:
+        raise HTTPException(
+            status_code=404, detail=f"no application with id {application_id!r}"
+        )
+    if application.learner_id != body.learner_id:
+        raise HTTPException(
+            status_code=403,
+            detail="this application belongs to another learner",
+        )
+    from .deps import get_placement_store  # local import — the territory rule
+
+    placements = get_placement_store(request)
+    try:
+        application, _placement = placements.transition_application(
+            application_id,
+            "withdrawn",
+            actor_type="learner",
+            actor_ref=f"learner:{body.learner_id}",
+        )
+    except InvalidTransition as exc:
+        raise HTTPException(status_code=409, detail=str(exc)) from exc
+    return ApplyResponse(
+        application_id=application.id,
+        posting_id=application.posting_id,
+        status=application.status,
+    )
+
+
+# -- v0.11 P5: the learner status reads (D-104/G-322, REQ-11-005) -------------------
+
+
+def _placement_read(row: PlacementRow) -> PlacementRead:
+    """The PlacementRow → PlacementRead conversion (the placements_admin
+    helper mirrored — each route file owns its readers; start_date is
+    the ISO DATE string on the row, a date on the wire, D-103)."""
+    return PlacementRead(
+        id=row.id,
+        learner_id=row.learner_id,
+        employer_id=row.employer_id,
+        posting_id=row.posting_id,
+        application_id=row.application_id,
+        role_title=row.role_title,
+        start_date=date.fromisoformat(row.start_date),
+        status=row.status,  # type: ignore[arg-type]
+        created_at=row.created_at or _now(),
+        decided_at=row.decided_at or _now(),
+    )
+
+
+def _now():
+    from datetime import UTC, datetime
+
+    return datetime.now(UTC)
+
+
+@router.get("/applications/mine", response_model=MineApplicationResponse)
+async def mine_application(
+    request: Request,
+    posting_id: str = Query(min_length=1),
+    learner_id: str = Query(min_length=1),
+    store=Depends(get_marketplace_store),
+    settings: Settings = Depends(get_settings),
+) -> MineApplicationResponse:
+    """G-322 (binding): the mine point-read — the status panel's
+    application DISCOVERY on revisit (the panel NEVER depends on
+    client-persisted application_ids). Gate composition: G-5 allowlist
+    → verified 18+ (reads are free — the apply-rate window is the
+    WRITE budget, A-408's distinct-action rule; no new throttle knob,
+    D-088 untouched); no row → the honest 404 (the surface renders the
+    apply CTA)."""
+    _enforce_allowlist(learner_id, settings)
+    await require_verified_age(18, learner_id, _identity_store(request))
+
+    application = store.get_application_by_posting_learner(posting_id, learner_id)
+    if application is None:
+        raise HTTPException(
+            status_code=404,
+            detail=f"no application by this learner on posting {posting_id!r}",
+        )
+    return MineApplicationResponse(
+        application_id=application.id,
+        status=application.status,
+    )
+
+
+@router.get(
+    "/applications/{application_id}",
+    response_model=LearnerApplicationStatusResponse,
+)
+async def learner_application_status(
+    application_id: str,
+    request: Request,
+    learner_id: str = Query(min_length=1),
+    store=Depends(get_marketplace_store),
+    settings: Settings = Depends(get_settings),
+) -> LearnerApplicationStatusResponse:
+    """D-104 (REQ-11-005): the learner's-own outcome read — current
+    status + the FULL id-ordered timestamped history for THIS
+    application + the placement record when hired (one read, one
+    truth source). Same gates as the mine-read (reads are free);
+    foreign learner_id → 403 (the scoped query never renders another
+    learner's events); unknown → 404."""
+    _enforce_allowlist(learner_id, settings)
+    await require_verified_age(18, learner_id, _identity_store(request))
+
+    application = store.get_application(application_id)
+    if application is None:
+        raise HTTPException(
+            status_code=404, detail=f"no application with id {application_id!r}"
+        )
+    if application.learner_id != learner_id:
+        raise HTTPException(
+            status_code=403,
+            detail="this application belongs to another learner",
+        )
+    from .deps import get_placement_store  # local import — the territory rule
+
+    placements = get_placement_store(request)
+    events = [
+        PlacementEventRead.model_validate(event, from_attributes=True)
+        for event in placements.get_application_events(application_id)
+    ]
+    row = placements.get_placement_by_application(application_id)
+    return LearnerApplicationStatusResponse(
+        application=LearnerApplicationSummary(
+            id=application.id,
+            posting_id=application.posting_id,
+            learner_id=application.learner_id,
+            status=application.status,
+            created_at=application.created_at,
+        ),
+        events=events,
+        placement=_placement_read(row) if row is not None else None,
+    )
+
+
 # -- P4-B: resume upload + confirm (REQ-6-005, D-054, A-410) --------------------
 
 

apps/ai-service/ai_service/api/placements_admin.py

@@ -0,0 +1,330 @@
+"""Operator lane for placement oversight (D-106, REQ-11-002).
+
+`require_admin` IMPORTED from marketplace_admin (the billing_admin.py
+import precedent — token namespaces cannot collide, D-090): one
+generic remediation transition route + revoke + the R-80 re-hire +
+the reporting/export reads (P3/P4 extend this router). No employer
+session, no learner gate — a third principal class (D-097).
+
+OPERATOR = "operator" route-level provenance (employers_admin.py:54 —
+no per-operator accounts exist, D-094); every action is
+ledger-recorded with actor_type="operator" (the D-083 manual-grant
+lane) and answers in employer_audit_events via the P2 routes' own
+appends (operator transitions record through the placement ledger).
+"""
+
+from __future__ import annotations
+
+import json
+from datetime import date
+from typing import Annotated
+
+from fastapi import APIRouter, Depends, HTTPException, Response
+
+from ..config import Settings
+from ..marketplace.store import MarketplaceStore
+from ..placements.base import (
+    GUIDING_GOAL,
+    AdminTransitionRequest,
+    ApplicationTransitionResponse,
+    HireTransitionRequest,
+    PlacementOverview,
+    PlacementRead,
+)
+from ..placements.store import PlacementRow, PlacementStore
+from .deps import get_marketplace_store, get_placement_store
+from .marketplace_admin import require_admin
+
+#: D-094: route-level operator provenance — no per-operator accounts.
+OPERATOR = "operator"
+
+router = APIRouter(prefix="/v1/placements/admin", tags=["placements-admin"])
+# The admin-token gate composes on EVERY route handler via the
+# Annotated[Settings, Depends(require_admin)] house pattern (the
+# employers_admin idiom — fail-closed; token namespaces cannot collide
+# with employer session tokens, D-090).
+AdminGate = Annotated[Settings, Depends(require_admin)]
+
+
+def _placement_read(row: PlacementRow) -> PlacementRead:
+    return PlacementRead(
+        id=row.id,
+        learner_id=row.learner_id,
+        employer_id=row.employer_id,
+        posting_id=row.posting_id,
+        application_id=row.application_id,
+        role_title=row.role_title,
+        start_date=date.fromisoformat(row.start_date),
+        status=row.status,  # type: ignore[arg-type]
+        created_at=row.created_at or _now(),
+        decided_at=row.decided_at or _now(),
+    )
+
+
+def _now():
+    from datetime import UTC, datetime
+
+    return datetime.now(UTC)
+
+
+@router.post(
+    "/applications/{application_id}/transition",
+    response_model=ApplicationTransitionResponse,
+)
+async def admin_transition_application(
+    application_id: str,
+    body: AdminTransitionRequest,
+    _gate: AdminGate,
+    store: MarketplaceStore = Depends(get_marketplace_store),
+    placements: PlacementStore = Depends(get_placement_store),
+) -> ApplicationTransitionResponse:
+    """The generic operator remediation route (D-106): ANY matrix-legal
+    transition incl. withdrawn on a learner's behalf (remediation with
+    provenance, the D-083 lane). G-327: `to` is a CLOSED Literal —
+    unknown values die at pydantic (422), matrix-illegal known values
+    reach the store (409 InvalidTransition). role_title/start_date
+    are required iff to=hired (the honest 422 with required-fields
+    detail, D-103)."""
+    role_title: str | None = None
+    start_date: date | None = None
+    if body.to == "hired":
+        if body.role_title is None or body.start_date is None:
+            raise HTTPException(
+                status_code=422,
+                detail="role_title and start_date are required when to=hired (D-103)",
+            )
+        role_title, start_date = body.role_title, body.start_date
+    try:
+        application, placement = placements.transition_application(
+            application_id,
+            body.to,
+            actor_type="operator",
+            actor_ref=OPERATOR,
+            role_title=role_title,
+            start_date=start_date,
+        )
+    except Exception as exc:
+        # The placements InvalidTransition (409) MUST be matched before
+        # the ValueError arm — InvalidTransition subclasses ValueError.
+        from ..placements.base import InvalidTransition
+
+        if isinstance(exc, InvalidTransition):
+            raise HTTPException(status_code=409, detail=str(exc)) from exc
+        if isinstance(exc, ValueError):
+            raise HTTPException(status_code=422, detail=str(exc)) from exc
+        raise
+    return ApplicationTransitionResponse(
+        application_id=application.id,
+        status=application.status,  # type: ignore[arg-type]
+        placement=_placement_read(placement) if placement is not None else None,
+    )
+
+
+@router.post("/placements/{placement_id}/revoke", response_model=PlacementRead)
+async def admin_revoke_placement(
+    placement_id: str,
+    _gate: AdminGate,
+    placements: PlacementStore = Depends(get_placement_store),
+) -> PlacementRead:
+    """D-102: the operator correction — the one active → revoked
+    placement transition (operator-only by route). Unknown → 404;
+    non-active → 409 (the matrix)."""
+    try:
+        revoked = placements.revoke_placement(placement_id, OPERATOR)
+    except Exception as exc:
+        from ..placements.base import InvalidTransition
+
+        if isinstance(exc, InvalidTransition):
+            raise HTTPException(status_code=409, detail=str(exc)) from exc
+        raise
+    if revoked is None:
+        raise HTTPException(
+            status_code=404, detail=f"no placement with id {placement_id!r}"
+        )
+    return _placement_read(revoked)
+
+
+@router.post(
+    "/placements/by-application/{application_id}/re-hire",
+    response_model=PlacementRead,
+)
+async def admin_rehire_placement(
+    application_id: str,
+    body: HireTransitionRequest,
+    _gate: AdminGate,
+    placements: PlacementStore = Depends(get_placement_store),
+) -> PlacementRead:
+    """THE R-80 RE-HIRE ROUTE: after the first hire the application is
+    TERMINAL (hired → hired is a 409 on every matrix-validated
+    surface — the coherence gap research found). The re-hire creates
+    the FRESH PlacementRow + the placement.rehired ledger event
+    WITHOUT touching the application's terminal status — the ledger
+    reads hired → revoke → rehire as three events, never fabricating
+    a second application transition. Structurally safe: revoked rows
+    never match the partial WHERE status='active' (the G-316
+    property). G-326: decided_at = the re-hire event's stamp."""
+    try:
+        rehired = placements.rehire_placement(
+            application_id,
+            role_title=body.role_title,
+            start_date=body.start_date,
+            actor_ref=OPERATOR,
+        )
+    except Exception as exc:
+        from sqlalchemy.exc import IntegrityError
+
+        from ..placements.base import InvalidTransition
+
+        if isinstance(exc, InvalidTransition):
+            raise HTTPException(status_code=409, detail=str(exc)) from exc
+        if isinstance(exc, ValueError):
+            raise HTTPException(status_code=422, detail=str(exc)) from exc
+        if isinstance(exc, IntegrityError):
+            # the partial-unique arm: an ACTIVE placement already exists
+            raise HTTPException(
+                status_code=409,
+                detail="an active placement already exists for this "
+                "application — revoke it before re-hiring",
+            ) from exc
+        raise
+    return _placement_read(rehired)
+
+
+# -- the reporting read (v0.11 P3, Task 3-1-01 — REQ-11-003, D-107) ---------------
+
+
+@router.get("/overview", response_model=PlacementOverview)
+async def placement_overview(
+    _gate: AdminGate,
+    placements: PlacementStore = Depends(get_placement_store),
+) -> PlacementOverview:
+    """The D-107 computation — counts from ROWS at query time (never
+    denormalized counters, G-302/G-306): the guiding metric is DISTINCT
+    learners with ≥1 active placement, all-time cumulative toward
+    GUIDING_GOAL (a learner placed twice counts ONCE — the outcome's
+    noun is learners); revoked excluded from every count (D-102);
+    cohort month = the calendar month of start_date (YYYY-MM); orderings
+    pinned (R-73: by_employer count desc then employer_id;
+    by_cohort_month month ascending)."""
+    rows = placements.list_placements(status="active")
+    learner_ids = {row.learner_id for row in rows}
+    by_employer: dict[str, int] = {}
+    by_month: dict[str, int] = {}
+    for row in rows:
+        by_employer[row.employer_id] = by_employer.get(row.employer_id, 0) + 1
+        month = row.start_date[:7]  # ISO YYYY-MM (the calendar slice)
+        by_month[month] = by_month.get(month, 0) + 1
+    return PlacementOverview(
+        total_active_placements=len(rows),
+        distinct_learners_placed=len(learner_ids),
+        guiding_goal=GUIDING_GOAL,
+        by_employer=[
+            {"employer_id": employer_id, "count": count}
+            for employer_id, count in sorted(
+                by_employer.items(), key=lambda kv: (-kv[1], kv[0])
+            )
+        ],
+        by_cohort_month=[
+            {"month": month, "count": count}
+            for month, count in sorted(by_month.items())
+        ],
+    )
+
+
+# -- the audit export (v0.11 P4, Tasks 4-1-01/4-1-02 — REQ-11-004, D-108) ----------
+
+
+@router.get("/export")
+async def placement_export(
+    _gate: AdminGate,
+    placements: PlacementStore = Depends(get_placement_store),
+) -> Response:
+    """GET /v1/placements/admin/export — ONE self-contained JSON
+    document (D-108): {schema_version, generated_at, summary, cohort,
+    evidence_bundles (EVERY placement, active + revoked — G-325),
+    methodology (the G-321 statements + the three R-67 pilot gaps),
+    ledger (every event + head_hash)}. Determinism per R-73: pinned
+    orderings, no floats, generated_at excluded from comparison (the
+    re-export test strips it)."""
+    document = placements.build_export()
+    return Response(
+        content=json.dumps(document, sort_keys=True, separators=(",", ":")),
+        media_type="application/json",
+    )
+
+
+@router.get("/export/summary")
+async def placement_export_summary(
+    _gate: AdminGate,
+    placements: PlacementStore = Depends(get_placement_store),
+) -> Response:
+    """GET /v1/placements/admin/export/summary — text/markdown
+    rendered FROM the same JSON document (one builder, two
+    renderings — the anti-drift rule: the summary can never assert a
+    number the export doesn't contain). G-328: the title carries the
+    ATTESTATION language (employer-attested, operator-overseen) —
+    never a verification claim."""
+    document = placements.build_export()
+    summary = document["summary"]
+    methodology = document["methodology"]
+    head = document["ledger"]["head_hash"]
+    lines: list[str] = []
+    lines.append("# Placement Audit Export — Summary")
+    lines.append("")
+    lines.append(
+        "Employer-attested, operator-overseen placement records (NOT "
+        "third-party employment verification — see Methodology)."
+    )
+    lines.append("")
+    lines.append("## Totals")
+    lines.append("")
+    lines.append("| Metric | Count |")
+    lines.append("|---|---|")
+    lines.append(
+        f"| Distinct learners placed (toward {GUIDING_GOAL}) "
+        f"| {summary['distinct_learners_placed']} |"
+    )
+    lines.append(f"| Total active placements | {summary['total_active_placements']} |")
+    lines.append(f"| Revoked placements | {summary['revoked_count']} |")
+    lines.append("")
+    lines.append("## By cohort month (employment start)")
+    lines.append("")
+    lines.append("| Month | Placements |")
+    lines.append("|---|---|")
+    for bucket in summary["by_cohort_month"]:
+        lines.append(f"| {bucket['month']} | {bucket['count']} |")
+    if not summary["by_cohort_month"]:
+        lines.append("| (none recorded) | 0 |")
+    lines.append("")
+    lines.append("## Methodology")
+    lines.append("")
+    lines.append(f"### Placement definition\n\n{methodology['placement_definition']}\n")
+    lines.append(f"### Counting rules\n\n{methodology['counting_rules']}\n")
+    lines.append(f"### Verification\n\n{methodology['verification']}\n")
+    lines.append(f"### Scope\n\n{methodology['scope']}\n")
+    lines.append("## Verifying the export offline")
+    lines.append("")
+    lines.append(
+        "Every ledger event is embedded in the JSON export. Re-walk the "
+        "chain: for each event in id order, compute "
+        "`sha256(canonical_json + prev_hash)` where canonical_json is "
+        "the event's {id, application_id, placement_id, event_type, "
+        "actor_type, actor_ref, payload, created_at} serialized with "
+        "sorted keys and compact separators (created_at in UTC ISO-8601), "
+        "and prev_hash starts at the all-zeros GENESIS constant. The "
+        "final computed hash must equal head_hash:"
+    )
+    lines.append("")
+    lines.append(f"`head_hash: {head}`")
+    lines.append("")
+    lines.append(
+        "Then compare against a PRIOR export: its ledger.events must "
+        "appear as an exact prefix of this export's events, and its "
+        "head_hash must equal the hash at that prefix position "
+        "(export-to-export continuity is the anchor against wholesale "
+        "database replacement — see Verification)."
+    )
+    return Response(
+        content="\n".join(lines),
+        media_type="text/markdown",
+    )

apps/ai-service/ai_service/employers/store.py

@@ -64,7 +64,9 @@ _TABLES = (
 #: Audit event vocabulary: `auth` = the Wave 1-2 register/logout
 #: account events; `claim` = P2's claim/decide entity events; `manual`
 #: = operator action provenance (the billing kind set, employer-side).
-_AUDIT_EVENT_KINDS = ("auth", "claim", "manual")
+#: v0.11 P2: "application" joins the vocabulary (employer-driven hiring
+#: transitions append their audit row — the D-089 one-queryable lane).
+_AUDIT_EVENT_KINDS = ("auth", "claim", "manual", "application")
 
 
 class AccountRow(SQLModel, table=True):

apps/ai-service/ai_service/main.py

@@ -199,6 +199,18 @@ def create_app(settings: Settings | None = None) -> FastAPI:
                 db_path=settings.db_path
             )
 
+        # Placement tracking (v0.11, REQ-11-001): 9th D-027 store
+        # family on the same SQLite file (D-100: the transactional
+        # transition writes the marketplace application row through the
+        # shared metadata — one file, one commit). State-injection
+        # override preserved (the same getattr-guard template).
+        if getattr(app.state, "placement_store", None) is None:
+            from .placements.store import SQLitePlacementStore
+
+            app.state.placement_store = SQLitePlacementStore(
+                db_path=settings.db_path
+            )
+
         # Payment provider (v0.9 P3, REQ-9-003, D-075): mock-first
         # default; stripe over the shared httpx pool. G-11 (boot
         # survival): a misconfigured real provider must never crash the
@@ -334,6 +346,7 @@ def create_app(settings: Settings | None = None) -> FastAPI:
             identity_store.close()
             app.state.billing_store.close()
             app.state.employer_store.close()
+            app.state.placement_store.close()
             await app.state.http_client.aclose()
 
     app = FastAPI(title="Nextcraft AI Service", version=__version__, lifespan=lifespan)
@@ -410,6 +423,14 @@ def create_app(settings: Settings | None = None) -> FastAPI:
     # accounts/audit operator routes — require_admin (fail-closed).
     app.include_router(employers_admin_router)
 
+    # v0.11 placements (REQ-11-002, D-106): the operator lane — the
+    # generic transition + revoke + the R-80 re-hire; the reporting/
+    # export reads extend this router in P3/P4. require_admin
+    # composed at the router level (fail-closed, D-090 no-collision).
+    from .api.placements_admin import router as placements_admin_router
+
+    app.include_router(placements_admin_router)
+
     # v0.6 P5 (REQ-6-006, D-056): dynamic sitemap/robots — request-time
     # enumeration (build-time Next sitemap.ts cannot see runtime
     # postings under output:'export'); API routes beat the static mount.

apps/ai-service/ai_service/marketplace/store.py

@@ -346,6 +346,33 @@ class MarketplaceStore(Protocol):
         — never a second application."""
         ...
 
+    def get_application(self, application_id: str) -> Application | None:
+        """Point lookup by application id (D-100: the placements
+        store's transition path reads the row through the shared
+        metadata; this read serves routes + tests — the get_posting
+        shape)."""
+        ...
+
+    def get_application_by_posting_learner(
+        self, posting_id: str, learner_id: str
+    ) -> Application | None:
+        """v0.11 P5 (G-322, binding): the mine point-read over the
+        (posting_id, learner_id) unique key — the status panel's
+        application DISCOVERY on revisit; None = no application (the
+        surface renders the apply CTA — never client-persisted
+        application_ids)."""
+        ...
+
+    def list_applications_by_postings(
+        self, posting_ids: list[str], status: str | None = None
+    ) -> list[Application]:
+        """v0.11 P2 (D-105/G-319): the employer pipeline's ONE batched
+        read — every application on the given postings (the caller
+        scopes to the session's OWN claimed-entity postings first;
+        this read never enumerates beyond them), created_at DESC then
+        id; optional status facet."""
+        ...
+
     def list_applications(
         self, posting_id: str | None = None
     ) -> list[Application]:
@@ -900,6 +927,54 @@ class SQLiteMarketplaceStore:
             session.refresh(row)
             return row.to_application(), True
 
+    def get_application(self, application_id: str) -> Application | None:
+        """Point lookup by application id (D-100, the get_posting shape)."""
+        with Session(self._engine) as session:
+            row = session.get(ApplicationRow, application_id)
+            if row is None:
+                return None
+            session.refresh(row)
+            return row.to_application()
+
+    def get_application_by_posting_learner(
+        self, posting_id: str, learner_id: str
+    ) -> Application | None:
+        """v0.11 P5 (G-322): the mine point-read — one row over the
+        insert_application unique key (the get_posting point-read
+        discipline)."""
+        with Session(self._engine) as session:
+            row = session.exec(
+                select(ApplicationRow).where(
+                    ApplicationRow.posting_id == posting_id,
+                    ApplicationRow.learner_id == learner_id,
+                )
+            ).one_or_none()
+            if row is None:
+                return None
+            session.refresh(row)
+            return row.to_application()
+
+    def list_applications_by_postings(
+        self, posting_ids: list[str], status: str | None = None
+    ) -> list[Application]:
+        """v0.11 P2 (D-105/G-319): ONE batched read over the given
+        postings — created_at DESC then id; optional status facet.
+        Empty posting set → empty list (the honest no-postings case)."""
+        if not posting_ids:
+            return []
+        with Session(self._engine) as session:
+            stmt = select(ApplicationRow).where(
+                col(ApplicationRow.posting_id).in_(posting_ids)
+            )
+            if status is not None:
+                stmt = stmt.where(ApplicationRow.status == status)
+            rows = session.exec(
+                stmt.order_by(
+                    col(ApplicationRow.created_at).desc(), ApplicationRow.id
+                )
+            ).all()
+            return [r.to_application() for r in rows]
+
     def list_applications(
         self, posting_id: str | None = None
     ) -> list[Application]:

apps/ai-service/ai_service/placements/base.py

@@ -0,0 +1,380 @@
+"""Placement contracts: the D-099 hiring-state matrix, the D-101
+event vocabulary + GENESIS, and the placement wire shapes (REQ-11-001).
+
+Boundary (D-031 family): `placements/` never imports `api/`; stdlib +
+pydantic + the marketplace WIRE contracts only. The store imports the
+marketplace ROW (the sanctioned D-100 cross-family seam — one
+transaction covers both tables on the shared DB file).
+
+Id honesty (A-305, the family rule): every id in this module is an
+opaque handle minted UNIQUELY per creation call — never derived from
+user input or a deterministic hash of it.
+"""
+
+from __future__ import annotations
+
+from datetime import date, datetime
+from typing import Any, Literal
+
+from pydantic import BaseModel, ConfigDict, Field
+
+#: D-099 application status vocabulary (snake_case, the billing
+#: `past_due` precedent): the hiring lifecycle. `submitted` is the
+#: v0.6 status (zero migration); hired/rejected/withdrawn are TERMINAL.
+ApplicationStatus = Literal[
+    "submitted",
+    "in_review",
+    "interview",
+    "offer",
+    "hired",
+    "rejected",
+    "withdrawn",
+]
+
+#: Tuple mirror of the Literal (docs + tests import this).
+APPLICATION_STATUSES: tuple[ApplicationStatus, ...] = (
+    "submitted",
+    "in_review",
+    "interview",
+    "offer",
+    "hired",
+    "rejected",
+    "withdrawn",
+)
+
+#: Terminal statuses — no outgoing edges (D-099).
+TERMINAL_APPLICATION_STATUSES: tuple[ApplicationStatus, ...] = (
+    "hired",
+    "rejected",
+    "withdrawn",
+)
+
+#: D-099 transition matrix (the billing/store.py `_VALID_TRANSITIONS`
+#: shape): forward-only WITH skip-forward — from any non-terminal
+#: status, any LATER stage and any terminal are legal (a fast-track
+#: `submitted → hired` is a legal hire — CIRR counts the hire, not the
+#: ceremony); NO backward moves; terminals have empty tuples.
+TRANSITION_MATRIX: dict[str, tuple[str, ...]] = {
+    "submitted": (
+        "in_review",
+        "interview",
+        "offer",
+        "hired",
+        "rejected",
+        "withdrawn",
+    ),
+    "in_review": ("interview", "offer", "hired", "rejected", "withdrawn"),
+    "interview": ("offer", "hired", "rejected", "withdrawn"),
+    "offer": ("hired", "rejected", "withdrawn"),
+    "hired": (),
+    "rejected": (),
+    "withdrawn": (),
+}
+
+#: Placement lifecycle (D-102): created `active`; the ONLY transition
+#: is the operator correction `active → revoked`. Revoked rows stay in
+#: history (the partial unique index never touches them — re-hire
+#: creates a fresh row, R-80).
+PlacementStatus = Literal["active", "revoked"]
+PLACEMENT_STATUSES: tuple[PlacementStatus, ...] = ("active", "revoked")
+
+#: D-101 actor vocabulary (the billing `_BILLING_EVENT_KINDS` shape).
+ACTOR_TYPES: tuple[str, ...] = ("employer", "learner", "operator", "system")
+
+#: D-101 event-name vocabulary: application-stage events (one per
+#: transition — NO backfill: pre-v0.11 `submitted` rows carry only
+#: their created_at, never a fabricated event, A-304) + the placement
+#: lane (created on hired, revoked on the D-102 correction, rehired
+#: on the R-80 operator re-hire).
+EVENT_APPLICATION_TRANSITION: dict[str, str] = {
+    "in_review": "application.in_review",
+    "interview": "application.interview",
+    "offer": "application.offer",
+    "hired": "application.hired",
+    "rejected": "application.rejected",
+    "withdrawn": "application.withdrawn",
+}
+EVENT_PLACEMENT_CREATED = "placement.created"
+EVENT_PLACEMENT_REVOKED = "placement.revoked"
+EVENT_PLACEMENT_REHIRED = "placement.rehired"
+EVENT_NAMES: tuple[str, ...] = (
+    *EVENT_APPLICATION_TRANSITION.values(),
+    EVENT_PLACEMENT_CREATED,
+    EVENT_PLACEMENT_REVOKED,
+    EVENT_PLACEMENT_REHIRED,
+)
+
+#: D-101: the chain's genesis — the first event's prev_hash. A module
+#: constant, test-pinned (never a row — the walk starts here).
+GENESIS_HASH = "0" * 64
+
+
+class InvalidTransition(ValueError):
+    """A matrix-illegal application status move (D-099) or placement
+    status move (D-102) — the route's honest 409."""
+
+
+def is_terminal(status: str) -> bool:
+    """True when the application status has no outgoing edges."""
+    return status in TERMINAL_APPLICATION_STATUSES
+
+
+def validate_transition(from_status: str, to_status: str) -> None:
+    """D-099 matrix validation — raises InvalidTransition on any
+    illegal move (backward, terminal-source, unknown status)."""
+    if from_status not in TRANSITION_MATRIX:
+        raise InvalidTransition(f"unknown application status {from_status!r}")
+    if to_status not in APPLICATION_STATUSES:
+        raise InvalidTransition(f"unknown application status {to_status!r}")
+    if to_status not in TRANSITION_MATRIX[from_status]:
+        legal = TRANSITION_MATRIX[from_status] or "(terminal)"
+        raise InvalidTransition(
+            f"illegal transition {from_status!r} → {to_status!r} "
+            f"(legal: {legal})"
+        )
+
+
+class HireTransitionRequest(BaseModel):
+    """The hire body (D-103/G-324): role_title is employer-attested
+    free text — never silently the posting title — with the house
+    Field bounds (empty-string → 422); start_date is the employment
+    start DATE (first day of work), never a datetime: timezone-free by
+    construction, future + past allowed (D-103)."""
+
+    role_title: str = Field(min_length=1, max_length=200)
+    start_date: date
+
+
+class PlacementRead(BaseModel):
+    """A placement record over the wire (the PlacementRow read shape).
+
+    employer/learner/posting are ID REFERENCES (G-302) — resolved from
+    source rows at read/export, never trusted denormalized copies."""
+
+    model_config = ConfigDict(frozen=True)
+
+    id: str = Field(min_length=1)
+    learner_id: str = Field(min_length=1)
+    employer_id: str = Field(min_length=1)
+    posting_id: str = Field(min_length=1)
+    application_id: str = Field(min_length=1)
+    role_title: str = Field(min_length=1)
+    start_date: date
+    status: PlacementStatus
+    created_at: datetime
+    decided_at: datetime
+
+
+class PlacementEventRead(BaseModel):
+    """One ledger event over the wire (the PlacementEventRow read
+    shape) — application-stage events carry application_id with
+    placement_id None; the placement lane carries placement_id set."""
+
+    model_config = ConfigDict(frozen=True)
+
+    id: int
+    application_id: str | None = None
+    placement_id: str | None = None
+    event_type: str = Field(min_length=1)
+    actor_type: str = Field(min_length=1)
+    actor_ref: str = Field(min_length=1)
+    payload: dict[str, Any] = Field(default_factory=dict)
+    prev_hash: str = Field(min_length=1)
+    hash: str = Field(min_length=1)
+    created_at: datetime
+
+
+class EmployerApplicationSummary(BaseModel):
+    """An employer-facing application row (D-105/G-319): the pipeline
+    list + per-application reads. learner_id IS visible here — the
+    G-319 supersession scopes it to applications on the session's OWN
+    claimed-entity postings (the cross-entity arm 403s carry no data;
+    the own-postings LIST stays counts-only — the pin split)."""
+
+    model_config = ConfigDict(frozen=True)
+
+    id: str = Field(min_length=1)
+    posting_id: str = Field(min_length=1)
+    learner_id: str = Field(min_length=1)
+    status: ApplicationStatus
+    created_at: datetime | None = None
+
+
+class EmployerApplicationsResponse(BaseModel):
+    """GET /v1/employers/applications response: own-pipeline
+    applications (every status) + per-status facet counts (every
+    status key ALWAYS present — a zero-count status carries its
+    honest 0)."""
+
+    model_config = ConfigDict(frozen=True)
+
+    applications: list[EmployerApplicationSummary] = Field(default_factory=list)
+    facets: dict[str, int] = Field(default_factory=dict)
+    total: int = 0
+
+
+class ApplicationTransitionResponse(BaseModel):
+    """The transition result (per-target routes): the application's
+    new status + the placement record when the transition created
+    one (hire)."""
+
+    model_config = ConfigDict(frozen=True)
+
+    application_id: str = Field(min_length=1)
+    status: ApplicationStatus
+    placement: PlacementRead | None = None
+
+
+class AdminTransitionRequest(BaseModel):
+    """POST /v1/placements/admin/applications/{id}/transition body
+    (D-106/G-327): `to` is a CLOSED Literal of the seven D-099
+    statuses — unknown values die at pydantic (422), matrix-illegal
+    known values reach the store (409 InvalidTransition); the route
+    never sees a status outside the vocabulary. role_title/start_date
+    are required iff to=hired (enforced at the route, the honest 422
+    with required-fields detail)."""
+
+    model_config = ConfigDict(frozen=True)
+
+    to: ApplicationStatus
+    role_title: str | None = Field(default=None, min_length=1, max_length=200)
+    start_date: date | None = None
+
+
+#: D-107: the guiding outcome's north star (PROJECT.md line 7 — the
+#: noun is LEARNERS, not placements).
+GUIDING_GOAL = 1000
+
+#: D-108/G-321/G-325 (R-67/R-68): the export's methodology block —
+#: written from in-tree facts, stating its own three pilot gaps
+#: explicitly (an audit methodology that omits its own verification
+#: limits is A-304-class dishonesty) AND the chain's proof scope
+#: (G-321: what it proves, what it does not — wholesale DB replacement
+#: is undetectable by the walk alone; export-to-export continuity is
+#: the auditor's anchor — plus the event↔row cross-consistency check).
+#: CIRR kept as naming, not citation — the text stands on its own
+#: definitions (R-67).
+EXPORT_METHODOLOGY: dict[str, Any] = {
+    "placement_definition": (
+        "A placement is a `placement` row created by the hired transition "
+        "of a marketplace application, with an employer-attested role_title "
+        "and start_date (the employment start DATE, D-103), status=active "
+        "at export time. One ACTIVE placement per application is "
+        "structurally enforced (the partial unique index); revoked "
+        "placements stay in history and are excluded from every count."
+    ),
+    "counting_rules": (
+        "The guiding metric is DISTINCT learners with at least one active "
+        "placement, all-time cumulative toward the 1,000-learner guiding "
+        "goal (a learner placed twice counts ONCE — the outcome's noun is "
+        "learners, not placements). Revoked placements are excluded from "
+        "every count. Cohort month is the calendar month of start_date "
+        "(YYYY-MM) — the employment-start month, not a graduation cohort "
+        "(no graduation events exist in a marketplace; this divergence "
+        "from CIRR cohort convention is deliberate and documented)."
+    ),
+    "verification": (
+        "WHAT THE CHAIN PROVES: the global sha256 ledger (events ordered "
+        "by id, each hash covering the canonical JSON of its row + the "
+        "prior event's hash, from the GENESIS constant to the head) "
+        "detects in-place mutation of any event row and makes a chain "
+        "fork structurally impossible (UNIQUE(prev_hash)). WHAT IT DOES "
+        "NOT PROVE: a wholesale replacement of the database (delete every "
+        "event, re-append a fresh plausible chain from GENESIS) walks "
+        "green — the walk alone cannot detect it. THE AUDITOR'S ANCHOR "
+        "is export-to-export continuity: a prior export's ledger.events "
+        "must appear as an exact PREFIX of a later export's events, and "
+        "the prior export's head_hash must equal the hash at that prefix "
+        "position in the later export. EVENT↔ROW CROSS-CONSISTENCY: "
+        "every active placement must have a placement.created event; "
+        "every revoked placement a placement.revoked event; summary."
+        "revoked_count must equal the number of placement.revoked "
+        "events. EVIDENCE CLASS: verification is employer-principal "
+        "attestation (an authenticated hire by a claim-verified, "
+        "operator-approved employer principal) plus operator oversight — "
+        "recorded decisions, not third-party employment verification."
+    ),
+    "scope": (
+        "PILOT LIMITS, stated explicitly (R-67): (a) no minimum-employed-"
+        "duration check — a placement here is a RECORDED HIRE, not a "
+        "90-day sustained role; (b) no salary or compensation tracking "
+        "(out of scope by decision D-098); (c) verification is employer-"
+        "attested with operator oversight, NOT third-party employment "
+        "verification — no external auditor integration exists at "
+        "pilot; this export IS the third-party-auditor deliverable. "
+        "Coverage: every placement in the database, unbounded by date. "
+        "CIRR-style describes this export's format; the definitions "
+        "above are the operative ones."
+    ),
+}
+
+
+class PlacementOverview(BaseModel):
+    """GET /v1/placements/admin/overview response (D-107): counts
+    computed from rows at query time — NEVER denormalized counters
+    (G-302/G-306). The guiding metric is DISTINCT learners with ≥1
+    active placement (a learner placed twice counts ONCE); revoked
+    excluded from every count; cohort month = the calendar month of
+    start_date (YYYY-MM, employment-start month — not hired month)."""
+
+    model_config = ConfigDict(frozen=True)
+
+    total_active_placements: int = 0
+    distinct_learners_placed: int = 0
+    guiding_goal: int = GUIDING_GOAL
+    by_employer: list[dict[str, Any]] = Field(default_factory=list)
+    by_cohort_month: list[dict[str, Any]] = Field(default_factory=list)
+
+
+class EmployerPlacementsResponse(BaseModel):
+    """GET /v1/employers/placements response (D-109 surface 2's data
+    source): the claimed entity's OWN placements (active + revoked —
+    the employer sees their full history), created_at then id."""
+
+    model_config = ConfigDict(frozen=True)
+
+    placements: list[PlacementRead] = Field(default_factory=list)
+    total: int = 0
+
+
+class LearnerApplicationSummary(BaseModel):
+    """The application row on the learner status read (D-104,
+    REQ-11-005): the mine-visible fields only — ids + status + the
+    apply timestamp (nullable per the v0.6 row shape — honest
+    absence); references resolve at render (G-302), never
+    denormalized copies."""
+
+    model_config = ConfigDict(frozen=True)
+
+    id: str = Field(min_length=1)
+    posting_id: str = Field(min_length=1)
+    learner_id: str = Field(min_length=1)
+    status: ApplicationStatus
+    created_at: datetime | None = None
+
+
+class LearnerApplicationStatusResponse(BaseModel):
+    """GET /v1/marketplace/applications/{application_id}?learner_id=
+    response (REQ-11-005, D-104): current status + the FULL id-ordered
+    timestamped event history for THIS application (a scoped query —
+    never another learner's events) + the placement record when hired
+    (the honest null otherwise — never a fabricated placement, A-304)."""
+
+    model_config = ConfigDict(frozen=True)
+
+    application: LearnerApplicationSummary
+    events: list[PlacementEventRead] = Field(default_factory=list)
+    placement: PlacementRead | None = None
+
+
+class MineApplicationResponse(BaseModel):
+    """GET /v1/marketplace/applications/mine?posting_id=&learner_id=
+    response (G-322, binding): {application_id, status} — the status
+    panel's application DISCOVERY read on revisit; 404 = no application
+    on this posting (the surface renders the apply CTA — the panel
+    NEVER depends on client-persisted application_ids)."""
+
+    model_config = ConfigDict(frozen=True)
+
+    application_id: str = Field(min_length=1)
+    status: ApplicationStatus

apps/ai-service/ai_service/placements/store.py

@@ -0,0 +1,912 @@
+"""Placement persistence — the 9th D-027 store (REQ-11-001, D-112).
+
+TWO tables on the shared DB file (R-72): `placement` (immutable at
+creation except status — D-102) + `placement_event` (the append-only
+GLOBAL hash chain — D-101). Mechanics mirror employers/store.py
+exactly (pragmas, _validate/_normalize, Protocol + SQLite pair,
+surfaced IntegrityError, _constraint_error helper).
+
+NO DELETE PATH (R-70, binding): this module contains NO delete method
+and NO DELETE SQL — deleting the top ledger row would make SQLite's
+INTEGER PRIMARY KEY reuse max+1 and break the chain. Pinned by test.
+
+STATUS-COLUMN OWNERSHIP (R-78, binding): the marketplace store writes
+`application.status` EXACTLY ONCE at creation (insert_application);
+THIS store is the ONLY post-creation writer — via the ONE
+`transition_application` method, never a second append path (D-100:
+the status write + the ledger event + the placement-on-hired land in
+ONE transaction; a two-commit alternative leaves a crash window that
+voids the tamper-evidence this milestone sells).
+
+Canonical serialization (D-101/R-69/R-79, binding): the hash covers
+the canonical JSON of {id, application_id, placement_id, event_type,
+actor_type, actor_ref, payload, created_at} + prev_hash — sorted keys,
+compact separators, created_at ALWAYS `_as_utc(dt).isoformat()` (ONE
+pinned normalization: naive-in-SQLite vs aware-on-read must never
+drift), payload values str/int/bool/None only (floats REJECTED —
+R-69).
+"""
+
+from __future__ import annotations
+
+import hashlib
+import json
+import sqlite3
+import uuid
+from datetime import UTC, date, datetime
+from pathlib import Path
+from typing import Any, Protocol
+
+from sqlalchemy import Index, event, func, text
+from sqlalchemy.exc import IntegrityError
+from sqlalchemy.types import JSON, String
+from sqlmodel import Field, Session, SQLModel, col, create_engine, select
+
+from ..config import Settings
+from ..marketplace.store import ApplicationRow
+from .base import (
+    ACTOR_TYPES,
+    EVENT_APPLICATION_TRANSITION,
+    EVENT_PLACEMENT_CREATED,
+    EVENT_PLACEMENT_REHIRED,
+    EVENT_PLACEMENT_REVOKED,
+    EXPORT_METHODOLOGY,
+    GENESIS_HASH,
+    InvalidTransition,
+    validate_transition,
+)
+
+_PLACEMENT_ID_PREFIX = "plc-"
+
+
+def _as_utc(ts: datetime) -> datetime:
+    """SQLite stores naive; read paths re-label tz-aware UTC (D-027
+    pattern). Aware NON-UTC inputs CONVERT to the true instant (the
+    security review's P0-1: re-labeling preserves the offset — an
+    append-time canonical form of 12:00-04:00 would re-read as
+    12:00+00:00 and permanently break the chain, with no delete path
+    to recover)."""
+    if ts.tzinfo is None:
+        return ts.replace(tzinfo=UTC)
+    return ts.astimezone(UTC)
+
+
+def _constraint_error(message: str, params: dict[str, Any]) -> IntegrityError:
+    """Hand-raised IntegrityError (the guard arms) — the caller's
+    honest 409, never a silent overwrite."""
+    return IntegrityError(message, params, ValueError(message))
+
+
+def _sqlite_connect(dbapi_connection: sqlite3.Connection, _: object) -> None:
+    """Per-connection pragmas — mirrors the other D-027 stores."""
+    cursor = dbapi_connection.cursor()
+    cursor.execute("PRAGMA journal_mode=WAL")
+    cursor.execute("PRAGMA synchronous=NORMAL")
+    cursor.execute("PRAGMA busy_timeout=5000")
+    cursor.execute("PRAGMA foreign_keys=ON")
+    cursor.close()
+
+
+def _check_payload(value: Any) -> None:
+    """R-69: payload values are str/int/bool/None ONLY — floats (and
+    any nested container) are rejected at the store boundary: float
+    representation is a canonical-serialization drift the chain must
+    never depend on."""
+    if isinstance(value, bool) or value is None:
+        return
+    if isinstance(value, str):
+        return
+    if isinstance(value, int):
+        return
+    raise ValueError(
+        f"payload values must be str/int/bool/None, got {type(value).__name__}"
+    )
+
+
+class PlacementRow(SQLModel, table=True):
+    """A placement record (D-102): created by the hired transition,
+    IMMUTABLE except `status` (exactly one transition active → revoked,
+    operator-only by route). role_title/start_date/decided_at and the
+    four ID references are set once and NEVER rewritten — a silent
+    rewrite is exactly the tamper the ledger exists to detect.
+
+    G-316 shape: the partial UNIQUE index uq_active_placement_per_
+    application makes one-ACTIVE-placement-per-application a
+    STRUCTURAL guard — revoked rows stay in history and never match
+    the partial WHERE, so a re-hire after a mistaken revoke creates a
+    fresh row (R-80) and an operator fat-finger never permanently
+    erases a learner from the ≥1,000 count.
+    """
+
+    __tablename__ = "placement"
+    __table_args__ = (
+        Index(
+            "uq_active_placement_per_application",
+            "application_id",
+            unique=True,
+            sqlite_where=text("status='active'"),
+        ),
+    )
+
+    id: str = Field(primary_key=True, sa_type=String)
+    learner_id: str = Field(index=True, sa_type=String)
+    employer_id: str = Field(sa_type=String)
+    #: G-302: ID references resolved from source rows at read/export.
+    posting_id: str = Field(sa_type=String)
+    application_id: str = Field(index=True, sa_type=String)
+    role_title: str = Field(sa_type=String)
+    #: D-103: ISO YYYY-MM-DD — a calendar date, no datetime coercion.
+    start_date: str = Field(sa_type=String)
+    status: str = Field(default="active", sa_type=String)
+    created_at: datetime | None = Field(default=None)
+    #: D-102: the hired transition's store-stamped created_at (G-326:
+    #: the re-hire arm stamps the RE-HIRE event's created_at).
+    decided_at: datetime | None = Field(default=None)
+
+    def _validate(self) -> None:
+        if not self.id:
+            raise ValueError("id must be non-empty")
+        for field_name in (
+            "learner_id",
+            "employer_id",
+            "posting_id",
+            "application_id",
+            "role_title",
+            "start_date",
+        ):
+            if not getattr(self, field_name):
+                raise ValueError(f"{field_name} must be non-empty")
+        if self.status not in ("active", "revoked"):
+            raise ValueError(f"invalid placement status {self.status!r}")
+
+    def _normalize(self) -> None:
+        self.created_at = _as_utc(self.created_at) if self.created_at else None
+        self.decided_at = _as_utc(self.decided_at) if self.decided_at else None
+
+
+class PlacementEventRow(SQLModel, table=True):
+    """One append-only ledger event (D-101): ONE GLOBAL chain ordered
+    by autoincrement id. Each row stores prev_hash (the prior event's
+    hash; GENESIS_HASH for the first) + its own hash = sha256 over the
+    canonical JSON + prev_hash. UNIQUE(prev_hash) makes a chain fork
+    structurally impossible — two events claiming the same
+    predecessor surface IntegrityError (the G-316 backstop class).
+
+    Application-stage events carry application_id (placement_id
+    None); the placement lane (created/revoked/rehired) carries
+    placement_id set from hired onward.
+    """
+
+    __tablename__ = "placement_event"
+
+    id: int | None = Field(default=None, primary_key=True)
+    application_id: str | None = Field(default=None, index=True, sa_type=String)
+    placement_id: str | None = Field(default=None, sa_type=String)
+    event_type: str = Field(sa_type=String)
+    actor_type: str = Field(sa_type=String)
+    actor_ref: str = Field(sa_type=String)
+    payload: dict[str, Any] = Field(default_factory=dict, sa_type=JSON)
+    prev_hash: str = Field(unique=True, sa_type=String)
+    hash: str = Field(default="", sa_type=String)
+    created_at: datetime | None = Field(default=None)
+
+    def _validate(self) -> None:
+        if self.id is not None and self.id < 1:
+            raise ValueError("id must be a positive int when set")
+        if not self.event_type:
+            raise ValueError("event_type must be non-empty")
+        if self.actor_type not in ACTOR_TYPES:
+            raise ValueError(f"unknown actor_type {self.actor_type!r}")
+        if not self.actor_ref:
+            raise ValueError("actor_ref must be non-empty")
+        if not self.prev_hash:
+            raise ValueError("prev_hash must be non-empty")
+        for value in self.payload.values():
+            _check_payload(value)
+
+    def _normalize(self) -> None:
+        self.created_at = _as_utc(self.created_at) if self.created_at else None
+
+    def canonical_json(self) -> str:
+        """D-101/R-79: the canonical serialization — sorted keys,
+        compact separators, created_at ALWAYS `_as_utc(dt).isoformat()`
+        (ONE pinned normalization; the hashing and reading paths share
+        this function so they can never drift)."""
+        return json.dumps(
+            {
+                "id": self.id,
+                "application_id": self.application_id,
+                "placement_id": self.placement_id,
+                "event_type": self.event_type,
+                "actor_type": self.actor_type,
+                "actor_ref": self.actor_ref,
+                "payload": self.payload,
+                "created_at": (
+                    _as_utc(self.created_at).isoformat()
+                    if self.created_at is not None
+                    else None
+                ),
+            },
+            sort_keys=True,
+            separators=(",", ":"),
+        )
+
+
+def _compute_hash(canonical_json: str, prev_hash: str) -> str:
+    """sha256 over the canonical JSON + prev_hash (D-101 — the D-087
+    stdlib sha256 precedent; hexdigest)."""
+    return hashlib.sha256((canonical_json + prev_hash).encode("utf-8")).hexdigest()
+
+
+class PlacementStore(Protocol):
+    """Persistence contract for placements (D-101/D-102/D-112)."""
+
+    def create_schema(self) -> None:
+        """Ensure both tables exist (idempotent — shared DB file)."""
+        ...
+
+    def transition_application(
+        self,
+        application_id: str,
+        to_status: str,
+        actor_type: str,
+        actor_ref: str,
+        role_title: str | None = None,
+        start_date: date | None = None,
+        now: datetime | None = None,
+    ) -> tuple[ApplicationRow, PlacementRow | None]:
+        """D-100: the ONE transactional transition — update the
+        marketplace application row + append the ledger event + create
+        the PlacementRow on hired, ALL IN ONE COMMIT. One append per
+        transaction per lane (transition/revoke/rehire each append
+        exactly once); R-70: the appends race nothing — the chain's
+        prev_hash read-then-write is single-threaded-safe through
+        SQLite's writer serialization + the UNIQUE backstop."""
+        ...
+
+    def verify_chain(self) -> tuple[bool, str]:
+        """Recompute the walk from GENESIS_HASH → head; (ok, head_hash)."""
+        ...
+
+    def get_placement(self, placement_id: str) -> PlacementRow | None:
+        ...
+
+    def get_placement_by_application(
+        self, application_id: str
+    ) -> PlacementRow | None:
+        """v0.11 P5 (REQ-11-005): the learner status read's placement
+        arm — the ACTIVE placement on this application (the G-316
+        partial-unique shape: at most one; revoked-only history →
+        None, the honest null — the events carry the correction)."""
+        ...
+
+    def list_placements(self, status: str | None = None) -> list[PlacementRow]:
+        ...
+
+    def get_application_events(self, application_id: str) -> list[PlacementEventRow]:
+        ...
+
+    def list_events(self) -> list[PlacementEventRow]:
+        ...
+
+    def revoke_placement(
+        self, placement_id: str, actor_ref: str, now: datetime | None = None
+    ) -> PlacementRow | None:
+        """D-102: the one status-only mutation active → revoked + the
+        placement.revoked event, one transaction (operator-only by
+        route)."""
+        ...
+
+    def rehire_placement(
+        self,
+        application_id: str,
+        role_title: str,
+        start_date: date,
+        actor_ref: str,
+        now: datetime | None = None,
+    ) -> PlacementRow:
+        """R-80/G-326: a FRESH PlacementRow + placement.rehired event
+        WITHOUT touching the application's terminal status — the
+        correction lane. decided_at = the re-hire event's created_at.
+        An existing ACTIVE placement on the application surfaces its
+        IntegrityError (the caller's honest 409)."""
+        ...
+
+    def list_placements_by_employer(
+        self, employer_id: str
+    ) -> list[PlacementRow]:
+        """v0.11 P3 (D-109): the claimed entity's OWN placements
+        (active + revoked — the employer sees their full history),
+        created_at then id (the deterministic order)."""
+        ...
+
+    def build_export(self, now: datetime | None = None) -> dict[str, Any]:
+        """v0.11 P4 (D-108/G-321/G-325): the self-contained audit
+        document — {schema_version, generated_at, summary, cohort,
+        evidence_bundles, methodology, ledger} — resolved from SOURCE
+        ROWS at export time (G-302 snapshot-at-export). The summary
+        route renders FROM this dict (one truth source)."""
+        ...
+
+    def close(self) -> None:
+        ...
+
+
+class SQLitePlacementStore:
+    """SQLite implementation of PlacementStore (D-027/D-112)."""
+
+    def __init__(self, db_path: Path | None = None) -> None:
+        self._db_path: Path = db_path if db_path is not None else Settings().db_path
+        self._engine = create_engine(
+            f"sqlite:///{self._db_path}",
+            connect_args={"check_same_thread": False},
+        )
+        event.listen(self._engine, "connect", _sqlite_connect)
+        self.create_schema()
+
+    def create_schema(self) -> None:
+        """Ensure both tables exist (idempotent — shared DB file)."""
+        SQLModel.metadata.create_all(self._engine)
+
+    # -- chain core (D-101/R-70) -------------------------------------------
+
+    @staticmethod
+    def _chain_head(session: Session) -> tuple[int | None, str]:
+        """(last event id, its hash) or (None, GENESIS_HASH) — the
+        next append's prev_hash source."""
+        row = session.exec(
+            select(PlacementEventRow).order_by(col(PlacementEventRow.id).desc())
+        ).first()
+        if row is None or row.hash == "":
+            return None, GENESIS_HASH
+        return row.id, row.hash
+
+    @staticmethod
+    def _append_event(
+        session: Session,
+        *,
+        application_id: str | None,
+        placement_id: str | None,
+        event_type: str,
+        actor_type: str,
+        actor_ref: str,
+        payload: dict[str, Any] | None,
+        prev_hash: str,
+        created_at: datetime,
+    ) -> PlacementEventRow:
+        """R-70: flush-then-hash-then-commit — the row's own
+        autoincrement id participates in its own hash, so the append
+        flushes (id assigned), computes the hash, sets the column, and
+        flushes again. The CALLER owns the transaction (D-100: the
+        status write + the events + the placement land in one commit);
+        this helper never commits."""
+        row = PlacementEventRow(
+            application_id=application_id,
+            placement_id=placement_id,
+            event_type=event_type,
+            actor_type=actor_type,
+            actor_ref=actor_ref,
+            payload=dict(payload or {}),
+            prev_hash=prev_hash,
+            hash="",
+            created_at=created_at,
+        )
+        row._validate()
+        row._normalize()
+        session.add(row)
+        # flush #1: the autoincrement id is assigned
+        session.flush()
+        assert row.id is not None  # flush assigns it
+        # the hash covers the canonical JSON + prev_hash
+        row.hash = _compute_hash(row.canonical_json(), row.prev_hash)
+        # flush #2: the hash column lands
+        session.flush()
+        return row
+
+    def verify_chain(self) -> tuple[bool, str]:
+        """Recompute the walk GENESIS_HASH → head (R-70: O(n) sha256
+        over tiny rows — milliseconds at pilot scale)."""
+        with Session(self._engine) as session:
+            prev = GENESIS_HASH
+            last_hash = GENESIS_HASH
+            rows = session.exec(select(PlacementEventRow).order_by(col(PlacementEventRow.id))).all()
+            for row in rows:
+                row._normalize()
+                expected = _compute_hash(row.canonical_json(), prev)
+                if row.prev_hash != prev or row.hash != expected:
+                    return False, last_hash
+                prev = row.hash
+                last_hash = row.hash
+            return True, last_hash
+
+    # -- the ONE transition (D-100) ------------------------------------------
+
+    def transition_application(
+        self,
+        application_id: str,
+        to_status: str,
+        actor_type: str,
+        actor_ref: str,
+        role_title: str | None = None,
+        start_date: date | None = None,
+        now: datetime | None = None,
+    ) -> tuple[ApplicationRow, PlacementRow | None]:
+        """D-100: ONE Session on the placements engine covering BOTH
+        tables + the marketplace application row (the sanctioned
+        cross-family write — R-72: global SQLModel metadata means the
+        placements engine sees ApplicationRow; both stores share the
+        one SQLite file, so one commit covers everything atomically,
+        the decide_claim all-or-nothing precedent).
+
+        R-78: this is the ONLY post-creation writer of
+        application.status — never a second caller.
+        """
+        moment = _as_utc(now) if now is not None else datetime.now(UTC)
+        with Session(self._engine) as session:
+            application = session.get(ApplicationRow, application_id)
+            if application is None:
+                raise InvalidTransition(f"unknown application {application_id!r}")
+            validate_transition(application.status, to_status)
+            if to_status == "hired":
+                if not role_title:
+                    raise ValueError("role_title is required on hire (D-103)")
+                if start_date is None:
+                    raise ValueError("start_date is required on hire (D-103)")
+
+            # the status write (the only post-creation writer — R-78);
+            # the pre-transition status is captured BEFORE the mutation
+            from_status = application.status
+            application.status = to_status
+            application._normalize()
+
+            prev_id, prev_hash = self._chain_head(session)
+            payload: dict[str, Any] = {"from_status": from_status, "to_status": to_status}
+            self._append_event(
+                session,
+                application_id=application_id,
+                placement_id=None,
+                event_type=EVENT_APPLICATION_TRANSITION[to_status],
+                actor_type=actor_type,
+                actor_ref=actor_ref,
+                payload=payload,
+                prev_hash=prev_hash,
+                created_at=moment,
+            )
+
+            placement: PlacementRow | None = None
+            if to_status == "hired":
+                assert role_title is not None and start_date is not None
+                placement = PlacementRow(
+                    id=f"{_PLACEMENT_ID_PREFIX}{uuid.uuid4().hex[:16]}",
+                    learner_id=application.learner_id,
+                    employer_id=self._posting_employer_id(session, application.posting_id),
+                    posting_id=application.posting_id,
+                    application_id=application.id,
+                    role_title=role_title,
+                    start_date=start_date.isoformat(),
+                    status="active",
+                    created_at=moment,
+                    decided_at=moment,
+                )
+                placement._validate()
+                placement._normalize()
+                session.add(placement)
+                # the placement row must exist before its event references it
+                session.flush()
+                _, prev_hash_2 = self._chain_head(session)
+                self._append_event(
+                    session,
+                    application_id=application_id,
+                    placement_id=placement.id,
+                    event_type=EVENT_PLACEMENT_CREATED,
+                    actor_type=actor_type,
+                    actor_ref=actor_ref,
+                    payload={
+                        "role_title": role_title,
+                        "start_date": start_date.isoformat(),
+                    },
+                    prev_hash=prev_hash_2,
+                    created_at=moment,
+                )
+
+            session.commit()
+            session.refresh(application)
+            application._normalize()
+            if placement is not None:
+                session.refresh(placement)
+                placement._normalize()
+            return application, placement
+
+    @staticmethod
+    def _posting_employer_id(session: Session, posting_id: str) -> str:
+        """G-302: resolve the posting's employer_id from the SOURCE row
+        at placement-creation time — never trusted from the caller."""
+        from ..marketplace.store import PostingRow
+
+        posting = session.get(PostingRow, posting_id)
+        if posting is None:
+            raise _constraint_error(
+                f"guard: application references unknown posting "
+                f"{posting_id!r} — refusing to create placement",
+                {"posting_id": posting_id},
+            )
+        return posting.employer_id
+
+    # -- reads (consume-free, G-302 ID references) ---------------------------
+
+    def get_placement(self, placement_id: str) -> PlacementRow | None:
+        with Session(self._engine) as session:
+            row = session.get(PlacementRow, placement_id)
+            if row is None:
+                return None
+            row._normalize()
+            return row
+
+    def get_placement_by_application(
+        self, application_id: str
+    ) -> PlacementRow | None:
+        """v0.11 P5 (REQ-11-005): the ACTIVE placement on this
+        application — the G-316 partial unique index makes
+        at-most-one structural; revoked-only history → None (the
+        honest null — never a fabricated placement, A-304)."""
+        with Session(self._engine) as session:
+            row = session.exec(
+                select(PlacementRow).where(
+                    PlacementRow.application_id == application_id,
+                    PlacementRow.status == "active",
+                )
+            ).one_or_none()
+            if row is None:
+                return None
+            row._normalize()
+            return row
+
+    def list_placements(self, status: str | None = None) -> list[PlacementRow]:
+        """created_at then id (the list_postings ordering discipline,
+        R-73 — deterministic export ordering)."""
+        with Session(self._engine) as session:
+            stmt = select(PlacementRow)
+            if status is not None:
+                stmt = stmt.where(PlacementRow.status == status)
+            rows = session.exec(
+                stmt.order_by(col(PlacementRow.created_at), PlacementRow.id)
+            ).all()
+            for row in rows:
+                row._normalize()
+            return list(rows)
+
+    def get_application_events(self, application_id: str) -> list[PlacementEventRow]:
+        """id-ordered (the chain order) — scoped to ONE application."""
+        with Session(self._engine) as session:
+            rows = session.exec(
+                select(PlacementEventRow)
+                .where(PlacementEventRow.application_id == application_id)
+                .order_by(col(PlacementEventRow.id))
+            ).all()
+            for row in rows:
+                row._normalize()
+            return list(rows)
+
+    def list_events(self) -> list[PlacementEventRow]:
+        """The whole ledger, id-ordered (the export embeds every event
+        so the auditor's walk is offline — R-70)."""
+        with Session(self._engine) as session:
+            rows = session.exec(
+                select(PlacementEventRow).order_by(col(PlacementEventRow.id))
+            ).all()
+            for row in rows:
+                row._normalize()
+            return list(rows)
+
+    def count_events(self, event_type: str | None = None) -> int:
+        with Session(self._engine) as session:
+            stmt = select(func.count()).select_from(PlacementEventRow)
+            if event_type is not None:
+                stmt = stmt.where(PlacementEventRow.event_type == event_type)
+            return session.exec(stmt).one()
+
+    # -- the D-102 correction lane ------------------------------------------
+
+    def revoke_placement(
+        self, placement_id: str, actor_ref: str, now: datetime | None = None
+    ) -> PlacementRow | None:
+        """D-102: the one status-only mutation active → revoked + the
+        placement.revoked event, one transaction (operator-only by
+        route). None = unknown placement (route 404s)."""
+        moment = _as_utc(now) if now is not None else datetime.now(UTC)
+        with Session(self._engine) as session:
+            row = session.get(PlacementRow, placement_id)
+            if row is None:
+                return None
+            if row.status != "active":
+                raise InvalidTransition(
+                    f"placement {placement_id!r} is {row.status!r} — "
+                    "only an active placement can be revoked"
+                )
+            row.status = "revoked"
+            row._validate()
+            row._normalize()
+            _, prev_hash = self._chain_head(session)
+            self._append_event(
+                session,
+                application_id=row.application_id,
+                placement_id=row.id,
+                event_type=EVENT_PLACEMENT_REVOKED,
+                actor_type="operator",
+                actor_ref=actor_ref,
+                payload={"placement_id": placement_id},
+                prev_hash=prev_hash,
+                created_at=moment,
+            )
+            session.commit()
+            session.refresh(row)
+            row._normalize()
+            return row
+
+    def rehire_placement(
+        self,
+        application_id: str,
+        role_title: str,
+        start_date: date,
+        actor_ref: str,
+        now: datetime | None = None,
+    ) -> PlacementRow:
+        """R-80/G-326: the operator re-hire — a FRESH PlacementRow +
+        placement.rehired event WITHOUT touching the application's
+        terminal status (hired → hired is a 409 on every
+        matrix-validated surface; placements, not applications, are
+        the correction lane). decided_at = the re-hire event's
+        store-stamped created_at (G-326 — D-102's stamp rule extended).
+
+        The partial unique index is the guard: an existing ACTIVE
+        placement on the application refuses the insert and its
+        IntegrityError SURFACES (the caller's honest 409 — revoked
+        rows never match the partial WHERE, the exact G-316 property).
+        """
+        if not role_title:
+            raise ValueError("role_title is required on re-hire (D-103)")
+        if start_date is None:
+            raise ValueError("start_date is required on re-hire (D-103)")
+        moment = _as_utc(now) if now is not None else datetime.now(UTC)
+        with Session(self._engine) as session:
+            application = session.get(ApplicationRow, application_id)
+            if application is None:
+                raise InvalidTransition(f"unknown application {application_id!r}")
+            if application.status != "hired":
+                raise InvalidTransition(
+                    f"application {application_id!r} is {application.status!r} — "
+                    "re-hire is the correction lane for a hired application"
+                )
+            placement = PlacementRow(
+                id=f"{_PLACEMENT_ID_PREFIX}{uuid.uuid4().hex[:16]}",
+                learner_id=application.learner_id,
+                employer_id=self._posting_employer_id(session, application.posting_id),
+                posting_id=application.posting_id,
+                application_id=application.id,
+                role_title=role_title,
+                start_date=start_date.isoformat(),
+                status="active",
+                created_at=moment,
+                # G-326: the re-hire event's stamp, not the original hire's
+                decided_at=moment,
+            )
+            placement._validate()
+            placement._normalize()
+            session.add(placement)
+            # the partial unique index refuses a second ACTIVE row —
+            # its IntegrityError SURFACES (never swallowed, the
+            # insert_claim discipline)
+            session.flush()
+            _, prev_hash = self._chain_head(session)
+            self._append_event(
+                session,
+                application_id=application.id,
+                placement_id=placement.id,
+                event_type=EVENT_PLACEMENT_REHIRED,
+                actor_type="operator",
+                actor_ref=actor_ref,
+                payload={
+                    "role_title": role_title,
+                    "start_date": start_date.isoformat(),
+                },
+                prev_hash=prev_hash,
+                created_at=moment,
+            )
+            session.commit()
+            session.refresh(placement)
+            placement._normalize()
+            return placement
+
+    def list_placements_by_employer(
+        self, employer_id: str
+    ) -> list[PlacementRow]:
+        """v0.11 P3 (D-109): the claimed entity's OWN placements
+        (active + revoked — the full history), created_at then id."""
+        with Session(self._engine) as session:
+            rows = session.exec(
+                select(PlacementRow)
+                .where(PlacementRow.employer_id == employer_id)
+                .order_by(col(PlacementRow.created_at), PlacementRow.id)
+            ).all()
+            for row in rows:
+                row._normalize()
+            return list(rows)
+
+    # -- the audit export (v0.11 P4, D-108/G-321/G-325/R-73) -----------------
+
+    EXPORT_SCHEMA_VERSION = 1
+
+    def build_export(self, now: datetime | None = None) -> dict[str, Any]:
+        """D-108: ONE self-contained JSON document via this single
+        builder (the export route AND the summary route render from
+        the SAME dict — the summary can never drift from the export).
+
+        G-325: evidence_bundles cover EVERY placement (active AND
+        revoked) — the correction history (hired → revoked → rehired)
+        is precisely what an auditor most wants to inspect; cohort
+        stays active-only; revoked_count equals the placement.revoked
+        events (cross-checkable, rides the G-321(c) methodology).
+
+        R-73 determinism: events by id (chain order); by_cohort_month
+        ascending; cohort/evidence ordered created_at then id; float
+        absence (counts are ints by construction); generated_at is
+        export-only metadata (a function of the request, not the rows
+        — R-79) and is EXCLUDED from determinism comparison.
+        """
+        moment = _as_utc(now) if now is not None else datetime.now(UTC)
+        all_placements = self.list_placements()  # created_at then id
+        active = [row for row in all_placements if row.status == "active"]
+        revoked = [row for row in all_placements if row.status == "revoked"]
+        events = self.list_events()  # id order — the chain order
+
+        # summary (the D-107 computation — one implementation, reused)
+        learner_ids = {row.learner_id for row in active}
+        by_month: dict[str, int] = {}
+        for row in active:
+            month = row.start_date[:7]
+            by_month[month] = by_month.get(month, 0) + 1
+
+        # evidence bundles: G-302 — resolved from SOURCE ROWS at export
+        with Session(self._engine) as session:
+            from ..marketplace.store import ApplicationRow, PostingRow
+
+            evidence_bundles: list[dict[str, Any]] = []
+            cohort: list[dict[str, Any]] = []
+            for row in all_placements:
+                application = session.get(ApplicationRow, row.application_id)
+                posting = session.get(PostingRow, row.posting_id)
+                transition_history = [
+                    {
+                        "id": event.id,
+                        "event_type": event.event_type,
+                        "actor_type": event.actor_type,
+                        "actor_ref": event.actor_ref,
+                        "created_at": (
+                            _as_utc(event.created_at).isoformat()
+                            if event.created_at is not None
+                            else None
+                        ),
+                    }
+                    for event in events
+                    if event.application_id == row.application_id
+                ]
+                hired_at: str | None = None
+                for e in events:
+                    if (
+                        e.application_id == row.application_id
+                        and e.event_type == "application.hired"
+                        and e.created_at is not None
+                    ):
+                        hired_at = _as_utc(e.created_at).isoformat()
+                        break
+                decision_provenance = {
+                    "hired_event": hired_at,
+                    "decided_at": (
+                        _as_utc(row.decided_at).isoformat()
+                        if row.decided_at is not None
+                        else None
+                    ),
+                }
+                bundle: dict[str, Any] = {
+                    "placement_id": row.id,
+                    "placement_status": row.status,
+                    "role_title": row.role_title,
+                    "start_date": row.start_date,
+                    "learner_id": row.learner_id,
+                    "employer_id": row.employer_id,
+                    "posting_record": (
+                        {
+                            "id": posting.id,
+                            "title": posting.title,
+                            "employer_id": posting.employer_id,
+                            "status": posting.status,
+                        }
+                        if posting is not None
+                        else None
+                    ),
+                    "application_record": (
+                        {
+                            "id": application.id,
+                            "learner_id": application.learner_id,
+                            "posting_id": application.posting_id,
+                            "status": application.status,
+                            "created_at": (
+                                _as_utc(application.created_at).isoformat()
+                                if application.created_at is not None
+                                else None
+                            ),
+                        }
+                        if application is not None
+                        else None
+                    ),
+                    # D-101/A-304: NO backfill — pre-v0.11 submitted rows
+                    # carry only their created_at, never a fabricated
+                    # application.submitted event
+                    "transition_history": transition_history,
+                    "decision_provenance": decision_provenance,
+                }
+                evidence_bundles.append(bundle)
+                if row.status == "active":
+                    cohort.append(
+                        {
+                            "placement_id": row.id,
+                            "learner_id": row.learner_id,
+                            "employer_id": row.employer_id,
+                            "posting_id": row.posting_id,
+                            "application_id": row.application_id,
+                            "role_title": row.role_title,
+                            "start_date": row.start_date,
+                        }
+                    )
+
+        ok, head_hash = self.verify_chain()
+        if not ok:
+            # P4 review P2-1: a raise (not an assert — stripped under
+            # python -O) keeps the export FAIL-CLOSED on a broken
+            # chain: no document is ever served that would not walk.
+            raise RuntimeError(
+                "placement ledger chain verification failed — "
+                "refusing to build the audit export"
+            )
+
+        return {
+            "schema_version": self.EXPORT_SCHEMA_VERSION,
+            "generated_at": moment.isoformat(),
+            "summary": {
+                "distinct_learners_placed": len(learner_ids),
+                "total_active_placements": len(active),
+                "revoked_count": len(revoked),
+                "by_cohort_month": [
+                    {"month": month, "count": count}
+                    for month, count in sorted(by_month.items())
+                ],
+            },
+            "cohort": cohort,
+            "evidence_bundles": evidence_bundles,
+            "methodology": EXPORT_METHODOLOGY,
+            "ledger": {
+                "events": [
+                    {
+                        "id": event.id,
+                        "application_id": event.application_id,
+                        "placement_id": event.placement_id,
+                        "event_type": event.event_type,
+                        "actor_type": event.actor_type,
+                        "actor_ref": event.actor_ref,
+                        "payload": event.payload,
+                        "created_at": (
+                            _as_utc(event.created_at).isoformat()
+                            if event.created_at is not None
+                            else None
+                        ),
+                        "prev_hash": event.prev_hash,
+                        "hash": event.hash,
+                    }
+                    for event in events
+                ],
+                "head_hash": head_hash,
+            },
+        }
+
+    def close(self) -> None:
+        self._engine.dispose()

apps/ai-service/tests/placements/conftest.py

@@ -0,0 +1,116 @@
+"""Placement test fixtures (hermeticity rule: db_path pins tmp_path —
+never ~/.nextcraft, never the cloud).
+
+Mirrors the tests/marketplace pattern: tmp-path stores injected into
+a real create_app via state-injection (the G-9 precedent) — the
+transition routes see the exact composition production runs.
+
+G-313 (D-111): the autouse `_APPLY_TIMES` reset — the learner
+withdraw route (P2) rides the marketplace apply-rate window; without
+this reset the suite self-429s (the lesson applied BEFORE it ships).
+"""
+
+from __future__ import annotations
+
+from collections.abc import Iterator
+from pathlib import Path
+
+import pytest
+from fastapi.testclient import TestClient
+from pydantic import SecretStr
+
+from ai_service.config import Settings
+from ai_service.identity.store import SQLiteIdentityStore
+from ai_service.main import create_app
+from ai_service.marketplace.store import SQLiteMarketplaceStore
+from ai_service.placements.store import SQLitePlacementStore
+
+from ..conftest import SUITE_LEARNERS, seed_verified_identity
+
+#: The pilot learner roster for gated-route tests (G-5 allowlist
+#: coverage + verified 18+ identity records).
+PLACEMENT_LEARNERS = ["pilot-learner", "pilot-learner-2"]
+
+ADMIN_TOKEN = "test-admin-token"
+
+
+@pytest.fixture()
+def marketplace_store(tmp_path: Path) -> Iterator[SQLiteMarketplaceStore]:
+    """Hermetic store: D-100's topology — marketplace + placements
+    share ONE SQLite file (the cross-store transaction depends on
+    it)."""
+    store = SQLiteMarketplaceStore(db_path=tmp_path / "shared.db")
+    yield store
+    store.close()
+
+
+@pytest.fixture()
+def identity_store(tmp_path: Path) -> Iterator[SQLiteIdentityStore]:
+    store = SQLiteIdentityStore(db_path=tmp_path / "identity.db")
+    seed_verified_identity(store, PLACEMENT_LEARNERS)
+    yield store
+    store.close()
+
+
+@pytest.fixture()
+def placement_store(tmp_path: Path) -> Iterator[SQLitePlacementStore]:
+    """The 9th D-027 store on the SAME shared file as the marketplace
+    store (D-100/R-72: one SQLite file, two engines — the shipped
+    multi-store topology)."""
+    store = SQLitePlacementStore(db_path=tmp_path / "shared.db")
+    yield store
+    store.close()
+
+
+def make_client(
+    tmp_path: Path,
+    identity_store: SQLiteIdentityStore,
+    marketplace_store: SQLiteMarketplaceStore,
+    admin_token: str | None = ADMIN_TOKEN,
+) -> TestClient:
+    """Full app with state-injected stores; admin_token=None exercises
+    the D-057 fail-closed matrix. P1-2 (security review): ALL stores
+    share the ONE tmp file (marketplace rides shared.db; the app DB +
+    placement store point there too) — D-100's cross-store transition
+    depends on the single-file topology, exactly as production runs."""
+    settings = Settings(
+        provider="mock",
+        learner_allowlist=SUITE_LEARNERS,
+        db_path=tmp_path / "shared.db",
+        sandbox_dir=tmp_path / "sandboxes",
+        admin_token=SecretStr(admin_token or ""),
+    )
+    app = create_app(settings)
+    app.state.identity_store = identity_store  # state-injection (G-9)
+    app.state.marketplace_store = marketplace_store
+    app.state.placement_store = SQLitePlacementStore(db_path=tmp_path / "shared.db")
+    return TestClient(app)
+
+
+@pytest.fixture(autouse=True)
+def _reset_apply_rate_window() -> Iterator[None]:
+    """The apply rate cap is module-level process state (the D-019
+    precedent); tests must not inherit each other's windows — the P2
+    withdraw route rides this limiter (G-313 applied BEFORE it
+    ships)."""
+    from ai_service.api.marketplace import _APPLY_TIMES
+
+    _APPLY_TIMES.clear()
+    yield
+    _APPLY_TIMES.clear()
+
+
+@pytest.fixture()
+def client(
+    tmp_path: Path,
+    identity_store: SQLiteIdentityStore,
+    marketplace_store: SQLiteMarketplaceStore,
+) -> Iterator[TestClient]:
+    with make_client(
+        tmp_path, identity_store, marketplace_store, admin_token=ADMIN_TOKEN
+    ) as c:
+        yield c
+
+
+def admin_headers(token: str = ADMIN_TOKEN) -> dict[str, str]:
+    return {"X-Admin-Token": token}

apps/ai-service/tests/placements/test_admin_lane.py

@@ -0,0 +1,249 @@
+"""The operator lane tests (D-106/G-326/G-327, REQ-11-002) — the
+fail-closed matrix, the generic transition arms, revoke, and the
+R-80 re-hire route."""
+
+from __future__ import annotations
+
+import pytest
+from fastapi.testclient import TestClient
+
+from ai_service.marketplace.base import Posting
+from ai_service.marketplace.store import SQLiteMarketplaceStore
+
+from .conftest import ADMIN_TOKEN, make_client
+
+
+def _seed_posting(store: SQLiteMarketplaceStore, employer_id: str = "emp-test") -> str:
+    import uuid
+
+    posting = store.insert_posting(
+        Posting(
+            id=f"post-{uuid.uuid4().hex[:12]}",
+            source="admin",
+            external_id=f"test-{uuid.uuid4().hex[:8]}",
+            employer_id=employer_id,
+            title="AI Orchestration Engineer",
+        )
+    )
+    # the learner apply route requires published (409 on drafts)
+    store.set_posting_status(posting.id, "published")
+    return posting.id
+
+
+def _apply(client: TestClient, posting_id: str, learner_id: str = "pilot-learner") -> str:
+    resp = client.post(
+        "/v1/marketplace/apply", json={"posting_id": posting_id, "learner_id": learner_id}
+    )
+    assert resp.status_code == 200, resp.text
+    return resp.json()["application_id"]
+
+
+def _admin(token: str = ADMIN_TOKEN) -> dict[str, str]:
+    return {"X-Admin-Token": token}
+
+
+@pytest.fixture()
+def scaffold(tmp_path, identity_store, marketplace_store):
+    client = make_client(tmp_path, identity_store, marketplace_store)
+    with client as entered:
+        posting_id = _seed_posting(marketplace_store)
+        application_id = _apply(entered, posting_id)
+        yield {
+            "client": entered,
+            "posting_id": posting_id,
+            "application_id": application_id,
+        }
+
+
+# -- the fail-closed matrix (the R-56 shape) -------------------------------------
+
+
+def test_fail_closed_no_token(scaffold) -> None:
+    resp = scaffold["client"].post(
+        f"/v1/placements/admin/applications/{scaffold['application_id']}/transition",
+        json={"to": "in_review"},
+    )
+    assert resp.status_code == 403
+
+
+def test_fail_closed_bad_token(scaffold) -> None:
+    resp = scaffold["client"].post(
+        f"/v1/placements/admin/applications/{scaffold['application_id']}/transition",
+        json={"to": "in_review"},
+        headers=_admin("wrong-token"),
+    )
+    assert resp.status_code == 403
+
+
+def test_fail_closed_revoke_and_rehire(scaffold) -> None:
+    client = scaffold["client"]
+    # no token → 403 on every route (fail-closed)
+    resp = client.post(
+        "/v1/placements/admin/placements/plc-x/revoke",
+    )
+    assert resp.status_code == 403
+    # invalid token → 403 (never a 404/409 — the gate runs first)
+    resp = client.post(
+        "/v1/placements/admin/placements/plc-x/revoke",
+        headers=_admin("wrong-token"),
+    )
+    assert resp.status_code == 403
+    resp = client.post(
+        f"/v1/placements/admin/placements/by-application/{scaffold['application_id']}/re-hire",
+        json={"role_title": "Engineer", "start_date": "2026-12-01"},
+        headers=_admin("wrong-token"),
+    )
+    assert resp.status_code == 403
+
+
+# -- the generic transition route --------------------------------------------------
+
+
+def test_admin_transition_every_legal_arm(scaffold) -> None:
+    client, app_id = scaffold["client"], scaffold["application_id"]
+    for to_status in ("in_review", "interview", "offer", "rejected"):
+        resp = client.post(
+            f"/v1/placements/admin/applications/{app_id}/transition",
+            json={"to": to_status},
+            headers=_admin(),
+        )
+        # rejected is terminal — the loop ends there
+        assert resp.status_code == 200, resp.text
+        assert resp.json()["status"] == to_status
+        if to_status == "rejected":
+            break
+
+
+def test_admin_garbage_to_422(scaffold) -> None:
+    """G-327: `to` is a CLOSED Literal — garbage dies at pydantic
+    (422), never a 500/409."""
+    resp = scaffold["client"].post(
+        f"/v1/placements/admin/applications/{scaffold['application_id']}/transition",
+        json={"to": "garbage"},
+        headers=_admin(),
+    )
+    assert resp.status_code == 422
+
+
+def test_admin_matrix_illegal_409(scaffold) -> None:
+    client, app_id = scaffold["client"], scaffold["application_id"]
+    client.post(
+        f"/v1/placements/admin/applications/{app_id}/transition",
+        json={"to": "offer"},
+        headers=_admin(),
+    )
+    resp = client.post(
+        f"/v1/placements/admin/applications/{app_id}/transition",
+        json={"to": "in_review"},  # backward
+        headers=_admin(),
+    )
+    assert resp.status_code == 409
+
+
+def test_admin_hire_requires_fields_422(scaffold) -> None:
+    resp = scaffold["client"].post(
+        f"/v1/placements/admin/applications/{scaffold['application_id']}/transition",
+        json={"to": "hired"},
+        headers=_admin(),
+    )
+    assert resp.status_code == 422
+
+
+def test_admin_withdraw_on_learners_behalf(scaffold) -> None:
+    """The operator can drive ANY matrix-legal transition incl.
+    withdrawn (remediation with provenance, the D-083 lane)."""
+    resp = scaffold["client"].post(
+        f"/v1/placements/admin/applications/{scaffold['application_id']}/transition",
+        json={"to": "withdrawn"},
+        headers=_admin(),
+    )
+    assert resp.status_code == 200
+    assert resp.json()["status"] == "withdrawn"
+
+
+def _admin_hire(scaffold) -> str:
+    """The shared hire-through-the-operator-lane helper → placement id."""
+    resp = scaffold["client"].post(
+        f"/v1/placements/admin/applications/{scaffold['application_id']}/transition",
+        json={"to": "hired", "role_title": "Engineer", "start_date": "2026-11-01"},
+        headers=_admin(),
+    )
+    assert resp.status_code == 200, resp.text
+    body = resp.json()
+    assert body["status"] == "hired"
+    assert body["placement"]["role_title"] == "Engineer"
+    assert body["placement"]["status"] == "active"
+    return body["placement"]["id"]
+
+
+def test_admin_hire_creates_placement(scaffold) -> None:
+    _admin_hire(scaffold)
+
+
+# -- revoke + the R-80 re-hire ------------------------------------------------------
+
+
+def test_revoke_then_rehire_three_event_ledger(scaffold) -> None:
+    client, app_id = scaffold["client"], scaffold["application_id"]
+    placement_id = _admin_hire(scaffold)
+
+    # revoke
+    resp = client.post(
+        f"/v1/placements/admin/placements/{placement_id}/revoke",
+        headers=_admin(),
+    )
+    assert resp.status_code == 200, resp.text
+    assert resp.json()["status"] == "revoked"
+
+    # the revoked placement is out of the active set (P3's overview now
+    # exists — the D-102/D-107 exclusion arm)
+    resp = client.get("/v1/placements/admin/overview", headers=_admin())
+    assert resp.status_code == 200
+    assert resp.json()["total_active_placements"] == 0
+
+    # re-hire: the FRESH active row (R-80) + decided_at = the re-hire
+    # event's stamp (G-326 — asserted at the store layer in test_store)
+    resp = client.post(
+        f"/v1/placements/admin/placements/by-application/{app_id}/re-hire",
+        json={"role_title": "Engineer II", "start_date": "2026-12-15"},
+        headers=_admin(),
+    )
+    assert resp.status_code == 200, resp.text
+    rehired = resp.json()
+    assert rehired["status"] == "active"
+    assert rehired["id"] != placement_id
+    assert rehired["role_title"] == "Engineer II"
+
+
+def test_revoke_unknown_404(scaffold) -> None:
+    resp = scaffold["client"].post(
+        "/v1/placements/admin/placements/plc-nonexistent/revoke",
+        headers=_admin(),
+    )
+    assert resp.status_code == 404
+
+
+def test_rehire_second_active_409(scaffold) -> None:
+    """The partial-unique arm: re-hire WITHOUT revoke → the honest 409."""
+    client, app_id = scaffold["client"], scaffold["application_id"]
+    client.post(
+        f"/v1/placements/admin/applications/{app_id}/transition",
+        json={"to": "hired", "role_title": "Engineer", "start_date": "2026-11-01"},
+        headers=_admin(),
+    )
+    resp = client.post(
+        f"/v1/placements/admin/placements/by-application/{app_id}/re-hire",
+        json={"role_title": "Engineer II", "start_date": "2026-12-15"},
+        headers=_admin(),
+    )
+    assert resp.status_code == 409
+    assert "revoke it before re-hiring" in resp.json()["detail"]
+
+
+def test_rehire_requires_hired_application_409(scaffold) -> None:
+    resp = scaffold["client"].post(
+        f"/v1/placements/admin/placements/by-application/{scaffold['application_id']}/re-hire",
+        json={"role_title": "Engineer", "start_date": "2026-11-01"},
+        headers=_admin(),
+    )
+    assert resp.status_code == 409  # not hired yet — the correction lane refuses

apps/ai-service/tests/placements/test_employer_transitions.py

@@ -0,0 +1,298 @@
+"""Employer application transition tests (D-105, REQ-11-002) — the
+G-311 gate-order pins + the D-099 matrix 409 arms + the G-319 pin
+split + the hire arms."""
+
+from __future__ import annotations
+
+import pytest
+from fastapi.testclient import TestClient
+
+from ai_service.employers.store import SQLiteEmployerStore
+from ai_service.marketplace.base import Posting
+from ai_service.marketplace.store import SQLiteMarketplaceStore
+
+from .conftest import make_client
+
+# -- fixtures: the employer-principal + application scaffold -------------------
+
+
+def _seed_posting(store: SQLiteMarketplaceStore, employer_id: str) -> str:
+    import uuid
+
+    # the claim route requires the EmployerRow entity to exist (404 unknown)
+    from ai_service.marketplace.base import Employer
+
+    store.upsert_employer(
+        Employer(
+            id=employer_id,
+            source="seed-corpus",
+            external_id=employer_id,
+            name="Test Labs",
+            website="https://example.com/test",
+        )
+    )
+    posting = store.insert_posting(
+        Posting(
+            id=f"post-{uuid.uuid4().hex[:12]}",
+            source="admin",
+            external_id=f"test-{uuid.uuid4().hex[:8]}",
+            employer_id=employer_id,
+            title="AI Orchestration Engineer",
+            description="Test posting",
+        )
+    )
+    # the learner apply route requires published (409 on drafts)
+    store.set_posting_status(posting.id, "published")
+    return posting.id
+
+
+def _apply(client: TestClient, posting_id: str, learner_id: str = "pilot-learner") -> str:
+    resp = client.post(
+        "/v1/marketplace/apply", json={"posting_id": posting_id, "learner_id": learner_id}
+    )
+    assert resp.status_code == 200, resp.text
+    return resp.json()["application_id"]
+
+
+def _register_and_claim(
+    client: TestClient, employer_store: SQLiteEmployerStore, email: str
+) -> str:
+    """Register + claim + admin-approve → (token, claimed employer_id)."""
+    resp = client.post(
+        "/v1/employers/auth/register",
+        json={"email": email, "password": "hunter2hunter2"},
+    )
+    assert resp.status_code == 201, resp.text
+    token = resp.json()["token"]
+    resp = client.post(
+        "/v1/employers/claims",
+        json={"employer_id": "emp-test"},
+        headers={"Authorization": f"Bearer {token}"},
+    )
+    assert resp.status_code in (200, 201), resp.text
+    claim_id = resp.json()["id"]
+    resp = client.post(
+        f"/v1/employers/admin/claims/{claim_id}/approve",
+        headers={"X-Admin-Token": "test-admin-token"},
+    )
+    assert resp.status_code == 200, resp.text
+    return token
+
+
+def _make(tmp_path, identity_store, marketplace_store):
+    """Build the client + the employer store seam (the P2 scaffold)."""
+    client = make_client(tmp_path, identity_store, marketplace_store)
+    employer_store = SQLiteEmployerStore(db_path=tmp_path / "shared.db")
+    client.app.state.employer_store = (  # type: ignore[attr-defined]  # TestClient.app: ASGIApp-typed, runtime FastAPI
+        employer_store
+    )
+    return client, employer_store
+
+
+@pytest.fixture()
+def scaffold(tmp_path, identity_store, marketplace_store):
+    client, employer_store = _make(tmp_path, identity_store, marketplace_store)
+    with client as entered:
+        posting_id = _seed_posting(marketplace_store, "emp-test")
+        token = _register_and_claim(entered, employer_store, "hiring@example.com")
+        application_id = _apply(entered, posting_id)
+        yield {
+            "client": entered,
+            "token": token,
+            "posting_id": posting_id,
+            "application_id": application_id,
+        }
+
+
+def _hdr(token: str) -> dict[str, str]:
+    return {"Authorization": f"Bearer {token}"}
+
+
+# -- G-311 gate order (never a 409 before a 403; never a 403 before the 401) -----
+
+
+def test_gate_order_no_token_401(scaffold) -> None:
+    resp = scaffold["client"].post(
+        f"/v1/employers/applications/{scaffold['application_id']}/in-review"
+    )
+    assert resp.status_code == 401
+
+
+def test_gate_order_unclaimed_403(tmp_path, identity_store, marketplace_store) -> None:
+    client, _ = _make(tmp_path, identity_store, marketplace_store)
+    with client as entered:
+        posting_id = _seed_posting(marketplace_store, "emp-test")
+        resp = entered.post(
+            "/v1/employers/auth/register",
+            json={"email": "unclaimed@example.com", "password": "hunter2hunter2"},
+        )
+        token = resp.json()["token"]
+        application_id = _apply(entered, posting_id)
+        resp = entered.post(
+            f"/v1/employers/applications/{application_id}/in-review",
+            headers=_hdr(token),
+        )
+        assert resp.status_code == 403
+        assert "no_claimed_employer" in str(resp.json()["detail"])
+
+
+def test_gate_order_foreign_application_403(scaffold, tmp_path, identity_store,
+                                             marketplace_store) -> None:
+    """The cross-entity arm: another entity's posting's application →
+    403 with NO application data (anti-enumeration, G-319)."""
+    client = scaffold["client"]
+    foreign_posting = _seed_posting(marketplace_store, "emp-other")
+    foreign_app = _apply(client, foreign_posting)
+    resp = client.post(
+        f"/v1/employers/applications/{foreign_app}/in-review",
+        headers=_hdr(scaffold["token"]),
+    )
+    assert resp.status_code == 403
+    assert resp.json()["detail"] == (
+        "this application belongs to another employer entity"
+    )
+
+
+# -- the pipeline list + G-319 pin split ----------------------------------------
+
+
+def test_list_own_applications_with_learner_id(scaffold) -> None:
+    client = scaffold["client"]
+    resp = client.get("/v1/employers/applications", headers=_hdr(scaffold["token"]))
+    assert resp.status_code == 200, resp.text
+    body = resp.json()
+    assert body["total"] == 1
+    app_row = body["applications"][0]
+    # G-319 supersession: learner_id IS visible on the application-scoped read
+    assert app_row["learner_id"] == "pilot-learner"
+    assert app_row["status"] == "submitted"
+    assert body["facets"]["submitted"] == 1
+    assert body["facets"]["hired"] == 0
+
+
+def test_own_postings_list_stays_counts_only(scaffold) -> None:
+    """The G-319 pin split: the own-postings LIST never carries learner
+    identifiers (the v0.10 boundary holds there — unchanged)."""
+    client = scaffold["client"]
+    resp = client.get("/v1/employers/postings", headers=_hdr(scaffold["token"]))
+    assert resp.status_code == 200
+    assert "pilot-learner" not in resp.text
+
+
+# -- per-target transitions + the D-099 matrix 409s -----------------------------
+
+
+def test_full_pipeline_transitions(scaffold) -> None:
+    client, token = scaffold["client"], scaffold["token"]
+    app_id = scaffold["application_id"]
+    for target in ("in-review", "interview", "offer"):
+        resp = client.post(
+            f"/v1/employers/applications/{app_id}/{target}", headers=_hdr(token)
+        )
+        assert resp.status_code == 200, resp.text
+        assert resp.json()["status"] == target.replace("-", "_")
+    resp = client.post(
+        f"/v1/employers/applications/{app_id}/hire",
+        json={"role_title": "AI Orchestration Engineer", "start_date": "2026-11-01"},
+        headers=_hdr(token),
+    )
+    assert resp.status_code == 200, resp.text
+    body = resp.json()
+    assert body["status"] == "hired"
+    assert body["placement"]["role_title"] == "AI Orchestration Engineer"
+    assert body["placement"]["start_date"] == "2026-11-01"
+    assert body["placement"]["employer_id"] == "emp-test"
+
+
+def test_skip_forward_hire_from_submitted(scaffold) -> None:
+    """R-71: submitted → hired is a legal fast-track."""
+    client, token = scaffold["client"], scaffold["token"]
+    resp = client.post(
+        f"/v1/employers/applications/{scaffold['application_id']}/hire",
+        json={"role_title": "Engineer", "start_date": "2026-12-01"},
+        headers=_hdr(token),
+    )
+    assert resp.status_code == 200
+    assert resp.json()["status"] == "hired"
+
+
+def test_matrix_backward_move_409(scaffold) -> None:
+    client, token = scaffold["client"], scaffold["token"]
+    app_id = scaffold["application_id"]
+    client.post(
+        f"/v1/employers/applications/{app_id}/offer", headers=_hdr(token)
+    )
+    resp = client.post(
+        f"/v1/employers/applications/{app_id}/in-review", headers=_hdr(token)
+    )
+    assert resp.status_code == 409
+
+
+def test_matrix_terminal_source_409(scaffold) -> None:
+    client, token = scaffold["client"], scaffold["token"]
+    app_id = scaffold["application_id"]
+    client.post(
+        f"/v1/employers/applications/{app_id}/hire",
+        json={"role_title": "Engineer", "start_date": "2026-12-01"},
+        headers=_hdr(token),
+    )
+    resp = client.post(
+        f"/v1/employers/applications/{app_id}/reject", headers=_hdr(token)
+    )
+    assert resp.status_code == 409
+
+
+def test_hire_requires_role_title_and_start_date_422(scaffold) -> None:
+    client, token = scaffold["client"], scaffold["token"]
+    resp = client.post(
+        f"/v1/employers/applications/{scaffold['application_id']}/hire",
+        json={"role_title": "", "start_date": "2026-12-01"},
+        headers=_hdr(token),
+    )
+    # G-324: min_length=1 → the empty string dies at pydantic (422)
+    assert resp.status_code == 422
+    resp = client.post(
+        f"/v1/employers/applications/{scaffold['application_id']}/hire",
+        json={"role_title": "Engineer"},
+        headers=_hdr(token),
+    )
+    assert resp.status_code == 422
+
+
+def test_unknown_application_404(scaffold) -> None:
+    resp = scaffold["client"].post(
+        "/v1/employers/applications/app-nonexistent/in-review",
+        headers=_hdr(scaffold["token"]),
+    )
+    assert resp.status_code == 404
+
+
+def test_withdraw_never_offered_to_employers(scaffold) -> None:
+    """D-099: employers reject — there is NO employer withdraw route."""
+    client = scaffold["client"]
+    resp = client.post(
+        f"/v1/employers/applications/{scaffold['application_id']}/withdraw",
+        headers=_hdr(scaffold["token"]),
+    )
+    assert resp.status_code in (404, 405)
+
+
+# -- the P2-review pin (P2-2 disposition): the D-089 audit lane -------------------
+
+
+def test_transition_appends_employer_audit_row(scaffold) -> None:
+    """P2-2 pin: every employer transition appends its
+    employer_audit_events row (kind='application' — the vocabulary
+    extended in this phase; the one-queryable lane)."""
+
+    scaffold["client"].post(
+        f"/v1/employers/applications/{scaffold['application_id']}/in-review",
+        headers=_hdr(scaffold["token"]),
+    )
+    store = scaffold["client"].app.state.employer_store
+    events = store.list_audit_events(kind="application")
+    assert len(events) == 1
+    assert events[0].name == "application.in_review"
+    assert events[0].application_id if False else True  # noqa: the id rides detail
+    assert events[0].detail["application_id"] == scaffold["application_id"]
+    assert events[0].detail["to_status"] == "in_review"

apps/ai-service/tests/placements/test_export.py

@@ -0,0 +1,283 @@
+"""The audit-export tests (D-108/G-321/G-325, REQ-11-004) — re-export
+determinism, chain-head consistency, methodology completeness, the
+G-325 evidence bundles, fail-closed gates."""
+
+from __future__ import annotations
+
+import json
+import uuid
+
+import pytest
+from fastapi.testclient import TestClient
+
+from ai_service.marketplace.base import Employer, Posting
+from ai_service.marketplace.store import SQLiteMarketplaceStore
+
+from .conftest import ADMIN_TOKEN, make_client
+
+
+def _seed_posting(store: SQLiteMarketplaceStore, employer_id: str) -> str:
+    store.upsert_employer(
+        Employer(
+            id=employer_id,
+            source="seed-corpus",
+            external_id=employer_id,
+            name=f"Labs {employer_id}",
+        )
+    )
+    posting = store.insert_posting(
+        Posting(
+            id=f"post-{uuid.uuid4().hex[:10]}",
+            source="admin",
+            external_id=f"t-{uuid.uuid4().hex[:10]}",
+            employer_id=employer_id,
+            title="AI Orchestration Engineer",
+        )
+    )
+    store.set_posting_status(posting.id, "published")
+    return posting.id
+
+
+def _hire_direct(
+    client: TestClient,
+    marketplace: SQLiteMarketplaceStore,
+    posting_id: str,
+    learner_id: str,
+    start_date: str = "2026-11-01",
+) -> str:
+    from datetime import date
+
+    placements = client.app.state.placement_store  # type: ignore[attr-defined]  # TestClient.app: ASGIApp-typed, runtime FastAPI
+    application, _ = marketplace.insert_application(posting_id, learner_id)
+    _, placement = placements.transition_application(
+        application.id,
+        "hired",
+        actor_type="operator",
+        actor_ref="operator",
+        role_title="Engineer",
+        start_date=date.fromisoformat(start_date),
+    )
+    assert placement is not None
+    return placement.id
+
+
+@pytest.fixture()
+def scaffold(tmp_path, identity_store, marketplace_store):
+    client = make_client(tmp_path, identity_store, marketplace_store)
+    with client as entered:
+        yield {"client": entered, "marketplace": marketplace_store}
+
+
+def _export(client: TestClient, token: str = ADMIN_TOKEN) -> dict:
+    resp = client.get(
+        "/v1/placements/admin/export", headers={"X-Admin-Token": token}
+    )
+    assert resp.status_code == 200, resp.text
+    assert resp.headers["content-type"].startswith("application/json")
+    return json.loads(resp.text)
+
+
+# -- the G-321/G-325/R-73 contract -----------------------------------------------
+
+
+def test_reexport_determinism(scaffold) -> None:
+    """R-73: two exports on an unchanged DB → identical ledger chains
+    + identical head_hash, generated_at EXCLUDED from comparison."""
+    s = scaffold
+    posting_id = _seed_posting(s["marketplace"], "emp-a")
+    _hire_direct(s["client"], s["marketplace"], posting_id, "pilot-learner")
+
+    first = _export(s["client"])
+    second = _export(s["client"])
+
+    # generated_at differs (a function of the request) — everything
+    # else is byte-identical (the TOTAL-exclusion rule: strip the key)
+    first.pop("generated_at")
+    second.pop("generated_at")
+    assert first == second
+    assert first["ledger"]["events"] == second["ledger"]["events"]
+    assert first["ledger"]["head_hash"] == second["ledger"]["head_hash"]
+
+
+def test_chain_head_consistency(scaffold) -> None:
+    """head_hash = the last event's hash = verify_chain's output."""
+    s = scaffold
+    posting_id = _seed_posting(s["marketplace"], "emp-a")
+    _hire_direct(s["client"], s["marketplace"], posting_id, "pilot-learner")
+    body = _export(s["client"])
+    events = body["ledger"]["events"]
+    assert body["ledger"]["head_hash"] == events[-1]["hash"]
+    placements = s["client"].app.state.placement_store
+    ok, head = placements.verify_chain()
+    assert ok is True
+    assert head == body["ledger"]["head_hash"]
+
+
+def test_methodology_completeness(scaffold) -> None:
+    """G-321 + R-67/R-68: all four methodology keys present; the three
+    pilot gaps stated explicitly; the chain proof-scope + continuity
+    anchor + cross-check stated."""
+    body = _export(scaffold["client"])
+    methodology = body["methodology"]
+    for key in ("placement_definition", "counting_rules", "verification", "scope"):
+        assert key in methodology, f"methodology missing {key}"
+    verification = methodology["verification"]
+    scope = methodology["scope"]
+    # the chain's proof scope + limit + anchor (G-321)
+    assert "WHAT THE CHAIN PROVES" in verification
+    assert "WHAT IT DOES NOT PROVE" in verification
+    assert "export-to-export continuity" in verification or "PREFIX" in verification
+    assert "revoked_count" in verification  # the (c) cross-check
+    # the three R-67 pilot gaps (a) (b) (c) stated in scope
+    assert "minimum-employed-duration" in scope or "duration" in scope
+    assert "salary" in scope
+    assert "NOT third-party employment verification" in scope
+    # employer-attested evidence class named
+    assert "attestation" in verification
+
+
+def test_evidence_bundles_cover_revoked_too(scaffold) -> None:
+    """G-325: bundles cover EVERY placement (active AND revoked) with
+    the full event history; cohort stays active-only."""
+    s = scaffold
+    posting_id = _seed_posting(s["marketplace"], "emp-a")
+    placement_id = _hire_direct(s["client"], s["marketplace"], posting_id,
+                                "pilot-learner")
+    placements = s["client"].app.state.placement_store
+    placements.revoke_placement(placement_id, "operator")
+
+    body = _export(s["client"])
+    assert body["summary"]["revoked_count"] == 1
+    assert body["cohort"] == []  # active-only
+    assert len(body["evidence_bundles"]) == 1  # the revoked row IS bundled
+    bundle = body["evidence_bundles"][0]
+    assert bundle["placement_status"] == "revoked"
+    assert bundle["posting_record"] is not None
+    assert bundle["application_record"] is not None
+    event_types = [e["event_type"] for e in bundle["transition_history"]]
+    assert "application.hired" in event_types
+    assert "placement.created" in event_types
+    assert "placement.revoked" in event_types
+    # the (c) cross-check: revoked_count == the placement.revoked events
+    revoked_events = [
+        e for e in body["ledger"]["events"] if e["event_type"] == "placement.revoked"
+    ]
+    assert body["summary"]["revoked_count"] == len(revoked_events)
+
+
+def test_export_fail_closed(scaffold) -> None:
+    resp = scaffold["client"].get("/v1/placements/admin/export")
+    assert resp.status_code == 403
+    resp = scaffold["client"].get("/v1/placements/admin/export/summary")
+    assert resp.status_code == 403
+
+
+def test_summary_renders_from_the_same_document(scaffold) -> None:
+    """D-108's anti-drift rule: the summary's totals equal the export's
+    summary block on the same DB state; the content type is markdown;
+    the G-328 attestation title + the head hash present."""
+    s = scaffold
+    posting_id = _seed_posting(s["marketplace"], "emp-a")
+    _hire_direct(s["client"], s["marketplace"], posting_id, "pilot-learner")
+    export = _export(s["client"])
+    resp = s["client"].get(
+        "/v1/placements/admin/export/summary", headers={"X-Admin-Token": ADMIN_TOKEN}
+    )
+    assert resp.status_code == 200
+    assert resp.headers["content-type"].startswith("text/markdown")
+    text = resp.text
+    assert "Employer-attested, operator-overseen" in text  # G-328 title
+    assert f"| {export['summary']['distinct_learners_placed']} |" in text
+    assert export["ledger"]["head_hash"] in text  # the walk instructions
+    assert "PREFIX" in text  # the export-to-export continuity anchor
+
+
+# -- the full-chain E2E proof (the milestone's reason to exist) -------------------
+
+
+def test_e2e_audit_proof(scaffold) -> None:
+    """The machine-checked E2E (D-111): register → claim → admin
+    approve → posting → verified learner applies → transitions →
+    hire → placement created → chain green → export reproduces →
+    counts the learner ONCE."""
+    from ai_service.employers.store import SQLiteEmployerStore
+
+    s = scaffold
+    client = s["client"]
+    # fresh employer store on the shared file (the scaffold's client
+    # wires one only through the lifespan default — build it here)
+    import pathlib
+
+    db_path = pathlib.Path(
+        str(client.app.state.marketplace_store._db_path)  # the shared tmp file (test seam)
+    )
+    employer_store = SQLiteEmployerStore(db_path=db_path)
+    client.app.state.employer_store = employer_store
+
+    posting_id = _seed_posting(s["marketplace"], "emp-a")
+
+    # employer registers → claims → operator approves
+    resp = client.post(
+        "/v1/employers/auth/register",
+        json={"email": "e2e@example.com", "password": "hunter2hunter2"},
+    )
+    assert resp.status_code == 201
+    token = resp.json()["token"]
+    resp = client.post(
+        "/v1/employers/claims",
+        json={"employer_id": "emp-a"},
+        headers={"Authorization": f"Bearer {token}"},
+    )
+    assert resp.status_code in (200, 201)
+    claim_id = resp.json()["id"]
+    resp = client.post(
+        f"/v1/employers/admin/claims/{claim_id}/approve",
+        headers={"X-Admin-Token": ADMIN_TOKEN},
+    )
+    assert resp.status_code == 200
+
+    # verified learner applies
+    resp = client.post(
+        "/v1/marketplace/apply",
+        json={"posting_id": posting_id, "learner_id": "pilot-learner"},
+    )
+    assert resp.status_code == 200
+    application_id = resp.json()["application_id"]
+
+    # employer drives in_review → interview → offer → hire
+    for target in ("in-review", "interview", "offer"):
+        resp = client.post(
+            f"/v1/employers/applications/{application_id}/{target}",
+            headers={"Authorization": f"Bearer {token}"},
+        )
+        assert resp.status_code == 200, resp.text
+    resp = client.post(
+        f"/v1/employers/applications/{application_id}/hire",
+        json={"role_title": "AI Orchestration Engineer", "start_date": "2026-11-01"},
+        headers={"Authorization": f"Bearer {token}"},
+    )
+    assert resp.status_code == 200, resp.text
+    assert resp.json()["placement"]["status"] == "active"
+
+    # the chain walks green
+    placements = client.app.state.placement_store
+    ok, _ = placements.verify_chain()
+    assert ok is True
+
+    # the export reproduces (chain + head identical, generated_at excluded)
+    first = _export(client)
+    first.pop("generated_at")
+    second = _export(client)
+    second.pop("generated_at")
+    assert first == second
+
+    # the overview counts the learner ONCE toward 1,000
+    resp = client.get(
+        "/v1/placements/admin/overview", headers={"X-Admin-Token": ADMIN_TOKEN}
+    )
+    assert resp.status_code == 200
+    overview = resp.json()
+    assert overview["distinct_learners_placed"] == 1
+    assert overview["total_active_placements"] == 1
+    assert overview["guiding_goal"] == 1000
+    assert overview["by_cohort_month"] == [{"month": "2026-11", "count": 1}]

apps/ai-service/tests/placements/test_learner_status.py

@@ -0,0 +1,260 @@
+"""Learner application-status tests (D-104/G-322, REQ-11-005) — the
+mine-read discovery arms, the status read's scoped-history + hired
+placement arms, the revoked honest-null arm, and the reads-stay-free
+pin (no self-429, G-313)."""
+
+from __future__ import annotations
+
+import pytest
+from fastapi.testclient import TestClient
+
+from ai_service.marketplace.base import Posting
+from ai_service.marketplace.store import SQLiteMarketplaceStore
+
+from .conftest import ADMIN_TOKEN, PLACEMENT_LEARNERS, make_client
+
+
+def _seed_posting(store: SQLiteMarketplaceStore, employer_id: str = "emp-test") -> str:
+    import uuid
+
+    posting = store.insert_posting(
+        Posting(
+            id=f"post-{uuid.uuid4().hex[:12]}",
+            source="admin",
+            external_id=f"test-{uuid.uuid4().hex[:8]}",
+            employer_id=employer_id,
+            title="AI Orchestration Engineer",
+        )
+    )
+    # the learner apply route requires published (409 on drafts)
+    store.set_posting_status(posting.id, "published")
+    return posting.id
+
+
+def _apply(client: TestClient, posting_id: str, learner_id: str = "pilot-learner") -> str:
+    resp = client.post(
+        "/v1/marketplace/apply", json={"posting_id": posting_id, "learner_id": learner_id}
+    )
+    assert resp.status_code == 200, resp.text
+    return resp.json()["application_id"]
+
+
+def _admin(token: str = ADMIN_TOKEN) -> dict[str, str]:
+    return {"X-Admin-Token": token}
+
+
+def _transition(client: TestClient, application_id: str, body: dict) -> None:
+    resp = client.post(
+        f"/v1/placements/admin/applications/{application_id}/transition",
+        json=body,
+        headers=_admin(),
+    )
+    assert resp.status_code == 200, resp.text
+
+
+def _status(client: TestClient, application_id: str, learner_id: str):
+    return client.get(
+        f"/v1/marketplace/applications/{application_id}",
+        params={"learner_id": learner_id},
+    )
+
+
+@pytest.fixture()
+def scaffold(tmp_path, identity_store, marketplace_store):
+    client = make_client(tmp_path, identity_store, marketplace_store)
+    with client as entered:
+        posting_id = _seed_posting(marketplace_store)
+        application_id = _apply(entered, posting_id)
+        yield {
+            "client": entered,
+            "posting_id": posting_id,
+            "application_id": application_id,
+        }
+
+
+# -- the mine-read (G-322): discovery on revisit -------------------------------
+
+
+def test_mine_own_200(scaffold) -> None:
+    resp = scaffold["client"].get(
+        "/v1/marketplace/applications/mine",
+        params={"posting_id": scaffold["posting_id"], "learner_id": "pilot-learner"},
+    )
+    assert resp.status_code == 200, resp.text
+    body = resp.json()
+    assert body["application_id"] == scaffold["application_id"]
+    assert body["status"] == "submitted"
+
+
+def test_mine_none_404(scaffold) -> None:
+    resp = scaffold["client"].get(
+        "/v1/marketplace/applications/mine",
+        params={"posting_id": scaffold["posting_id"], "learner_id": "pilot-learner-2"},
+    )
+    assert resp.status_code == 404
+
+
+def test_mine_unallowlisted_403(scaffold) -> None:
+    resp = scaffold["client"].get(
+        "/v1/marketplace/applications/mine",
+        params={"posting_id": scaffold["posting_id"], "learner_id": "intruder"},
+    )
+    assert resp.status_code == 403
+
+
+def test_mine_unverified_403(tmp_path, identity_store, marketplace_store) -> None:
+    """A learner on the roster but WITHOUT a verified identity record →
+    the verified-18+ arm refuses (the D-043 composition)."""
+    client = make_client(tmp_path, identity_store, marketplace_store)
+    with client as entered:
+        posting_id = _seed_posting(marketplace_store)
+        from ..conftest import SUITE_LEARNERS
+
+        unverified = next(name for name in SUITE_LEARNERS if name not in PLACEMENT_LEARNERS)
+        resp = entered.get(
+            "/v1/marketplace/applications/mine",
+            params={"posting_id": posting_id, "learner_id": unverified},
+        )
+        assert resp.status_code == 403
+
+
+# -- the status read (D-104): status + scoped history + placement ---------------
+
+
+def test_status_own_200_with_events(scaffold) -> None:
+    client = scaffold["client"]
+    _transition(client, scaffold["application_id"], {"to": "in_review"})
+    resp = _status(client, scaffold["application_id"], "pilot-learner")
+    assert resp.status_code == 200, resp.text
+    body = resp.json()
+    assert body["application"]["id"] == scaffold["application_id"]
+    assert body["application"]["posting_id"] == scaffold["posting_id"]
+    assert body["application"]["learner_id"] == "pilot-learner"
+    assert body["application"]["status"] == "in_review"
+    assert [e["event_type"] for e in body["events"]] == ["application.in_review"]
+    assert body["placement"] is None
+
+
+def test_status_events_scoped_and_id_ordered(scaffold) -> None:
+    """The events arm is a SCOPED query: another learner's events never
+    ride this read, and the history renders id-ordered (the chain
+    order)."""
+    client = scaffold["client"]
+    import uuid
+
+    store = client.app.state.marketplace_store
+    posting2 = store.insert_posting(
+        Posting(
+            id=f"post-b-{uuid.uuid4().hex[:6]}",
+            source="admin",
+            external_id=f"b-{uuid.uuid4().hex[:8]}",
+            employer_id="emp-test",
+            title="Second posting",
+        )
+    )
+    store.set_posting_status(posting2.id, "published")
+    other = _apply(client, posting2.id, learner_id="pilot-learner-2")
+    _transition(client, other, {"to": "interview"})
+    _transition(client, scaffold["application_id"], {"to": "in_review"})
+    _transition(client, scaffold["application_id"], {"to": "interview"})
+    resp = _status(client, scaffold["application_id"], "pilot-learner")
+    assert resp.status_code == 200, resp.text
+    body = resp.json()
+    assert [e["event_type"] for e in body["events"]] == [
+        "application.in_review",
+        "application.interview",
+    ]
+    assert all(
+        e["application_id"] == scaffold["application_id"] for e in body["events"]
+    )
+
+
+def test_status_hired_carries_placement(scaffold) -> None:
+    client = scaffold["client"]
+    _transition(
+        client,
+        scaffold["application_id"],
+        {"to": "hired", "role_title": "Placement Engineer", "start_date": "2026-11-02"},
+    )
+    resp = _status(client, scaffold["application_id"], "pilot-learner")
+    assert resp.status_code == 200, resp.text
+    body = resp.json()
+    assert body["application"]["status"] == "hired"
+    placement = body["placement"]
+    assert placement is not None
+    assert placement["role_title"] == "Placement Engineer"
+    assert placement["start_date"] == "2026-11-02"
+    assert placement["application_id"] == scaffold["application_id"]
+    assert placement["learner_id"] == "pilot-learner"
+    assert placement["employer_id"] == "emp-test"
+    assert placement["posting_id"] == scaffold["posting_id"]
+    # hired → the two-event chain: application.hired + placement.created
+    assert [e["event_type"] for e in body["events"]] == [
+        "application.hired",
+        "placement.created",
+    ]
+
+
+def test_status_revoked_placement_is_honest_null(scaffold) -> None:
+    """A-304: no active placement record renders after the operator
+    revoke — the honest null (the events carry the correction trail,
+    never a fabricated badge)."""
+    client = scaffold["client"]
+    app_id = scaffold["application_id"]
+    _transition(
+        client,
+        app_id,
+        {"to": "hired", "role_title": "Placement Engineer", "start_date": "2026-11-02"},
+    )
+    placement_id = _status(client, app_id, "pilot-learner").json()["placement"]["id"]
+    resp = client.post(
+        f"/v1/placements/admin/placements/{placement_id}/revoke",
+        headers=_admin(),
+    )
+    assert resp.status_code == 200, resp.text
+    resp = _status(client, app_id, "pilot-learner")
+    assert resp.status_code == 200, resp.text
+    body = resp.json()
+    assert body["placement"] is None
+    assert body["events"][-1]["event_type"] == "placement.revoked"
+
+
+def test_status_foreign_learner_403(scaffold) -> None:
+    resp = _status(scaffold["client"], scaffold["application_id"], "pilot-learner-2")
+    assert resp.status_code == 403
+
+
+def test_status_unallowlisted_403(scaffold) -> None:
+    resp = _status(scaffold["client"], scaffold["application_id"], "intruder")
+    assert resp.status_code == 403
+
+
+def test_status_unverified_403(tmp_path, identity_store, marketplace_store) -> None:
+    client = make_client(tmp_path, identity_store, marketplace_store)
+    with client as entered:
+        posting_id = _seed_posting(marketplace_store)
+        from ..conftest import SUITE_LEARNERS
+
+        unverified = next(name for name in SUITE_LEARNERS if name not in PLACEMENT_LEARNERS)
+        marketplace_store.insert_application(posting_id, unverified)
+        application = marketplace_store.list_applications(posting_id)[0]
+        resp = _status(entered, application.id, unverified)
+        assert resp.status_code == 403
+
+
+def test_status_unknown_404(scaffold) -> None:
+    resp = _status(scaffold["client"], "app-nonexistent", "pilot-learner")
+    assert resp.status_code == 404
+
+
+# -- G-313: reads never consume the apply-rate budget ----------------------------
+
+
+def test_status_reads_stay_free_no_self_429(scaffold) -> None:
+    """A-408's distinct-WRITE rule: status reads stay free — a revisit
+    storm of reads never 429s (the conftest reset proves the next
+    test starts clean either way)."""
+    client = scaffold["client"]
+    for _ in range(10):
+        resp = _status(client, scaffold["application_id"], "pilot-learner")
+        assert resp.status_code == 200, resp.text

apps/ai-service/tests/placements/test_learner_withdraw.py

@@ -0,0 +1,226 @@
+"""Learner withdraw tests (D-104/G-323, REQ-11-002) — the D-043 gate
+stack + the terminal arms + the apply-route terminal guard."""
+
+from __future__ import annotations
+
+import pytest
+from fastapi.testclient import TestClient
+
+from ai_service.marketplace.base import Posting
+from ai_service.marketplace.store import SQLiteMarketplaceStore
+
+from .conftest import PLACEMENT_LEARNERS, make_client
+
+
+def _seed_posting(store: SQLiteMarketplaceStore, employer_id: str = "emp-test") -> str:
+    import uuid
+
+    posting = store.insert_posting(
+        Posting(
+            id=f"post-{uuid.uuid4().hex[:12]}",
+            source="admin",
+            external_id=f"test-{uuid.uuid4().hex[:8]}",
+            employer_id=employer_id,
+            title="AI Orchestration Engineer",
+        )
+    )
+    # the learner apply route requires published (409 on drafts)
+    store.set_posting_status(posting.id, "published")
+    return posting.id
+
+
+def _apply(client: TestClient, posting_id: str, learner_id: str = "pilot-learner") -> str:
+    resp = client.post(
+        "/v1/marketplace/apply", json={"posting_id": posting_id, "learner_id": learner_id}
+    )
+    assert resp.status_code == 200, resp.text
+    return resp.json()["application_id"]
+
+
+@pytest.fixture()
+def scaffold(tmp_path, identity_store, marketplace_store):
+    client = make_client(tmp_path, identity_store, marketplace_store)
+    with client as entered:
+        posting_id = _seed_posting(marketplace_store)
+        application_id = _apply(entered, posting_id)
+        yield {
+            "client": entered,
+            "posting_id": posting_id,
+            "application_id": application_id,
+        }
+
+
+# -- the D-043 gate stack (G-5 → verified 18+ → the apply-rate window) ------------
+
+
+def test_withdraw_own_submitted(scaffold) -> None:
+    resp = scaffold["client"].post(
+        f"/v1/marketplace/applications/{scaffold['application_id']}/withdraw",
+        json={"learner_id": "pilot-learner"},
+    )
+    assert resp.status_code == 200, resp.text
+    assert resp.json()["status"] == "withdrawn"
+
+
+def test_withdraw_unallowlisted_403(scaffold) -> None:
+    resp = scaffold["client"].post(
+        f"/v1/marketplace/applications/{scaffold['application_id']}/withdraw",
+        json={"learner_id": "intruder"},
+    )
+    assert resp.status_code == 403
+
+
+def test_withdraw_unverified_403(tmp_path, identity_store, marketplace_store) -> None:
+    """A learner on the roster but WITHOUT a verified identity record →
+    the verified-18+ arm refuses (the D-043 composition)."""
+    client = make_client(tmp_path, identity_store, marketplace_store)
+    with client as entered:
+        posting_id = _seed_posting(marketplace_store)
+        # an allowlisted-but-unverified learner: the suite roster carries
+        # learners beyond PLACEMENT_LEARNERS (the tests/conftest SUITE
+        # list); the identity store only seeds PLACEMENT_LEARNERS.
+        from ..conftest import SUITE_LEARNERS
+
+        unverified = next(name for name in SUITE_LEARNERS if name not in PLACEMENT_LEARNERS)
+        # even the APPLY is refused for an unverified learner (the same
+        # D-043 stack) — the withdraw arm pins identically: build the
+        # application row directly through the store, then attempt the
+        # withdraw through the route.
+        marketplace_store.insert_application(posting_id, unverified)
+        application = marketplace_store.list_applications(posting_id)[0]
+        resp = entered.post(
+            f"/v1/marketplace/applications/{application.id}/withdraw",
+            json={"learner_id": unverified},
+        )
+        assert resp.status_code == 403
+
+
+def test_withdraw_foreign_learner_403(scaffold) -> None:
+    resp = scaffold["client"].post(
+        f"/v1/marketplace/applications/{scaffold['application_id']}/withdraw",
+        json={"learner_id": "pilot-learner-2"},
+    )
+    assert resp.status_code == 403
+
+
+def test_withdraw_terminal_409(scaffold) -> None:
+    client = scaffold["client"]
+    client.post(
+        f"/v1/marketplace/applications/{scaffold['application_id']}/withdraw",
+        json={"learner_id": "pilot-learner"},
+    )
+    resp = client.post(
+        f"/v1/marketplace/applications/{scaffold['application_id']}/withdraw",
+        json={"learner_id": "pilot-learner"},
+    )
+    assert resp.status_code == 409
+
+
+def test_withdraw_unknown_404(scaffold) -> None:
+    resp = scaffold["client"].post(
+        "/v1/marketplace/applications/app-nonexistent/withdraw",
+        json={"learner_id": "pilot-learner"},
+    )
+    assert resp.status_code == 404
+
+
+# -- G-323: apply on a terminal application → 409, never a 200 lie --------------
+
+
+def test_reapply_after_withdraw_409(scaffold) -> None:
+    client = scaffold["client"]
+    client.post(
+        f"/v1/marketplace/applications/{scaffold['application_id']}/withdraw",
+        json={"learner_id": "pilot-learner"},
+    )
+    resp = client.post(
+        "/v1/marketplace/apply",
+        json={"posting_id": scaffold["posting_id"], "learner_id": "pilot-learner"},
+    )
+    assert resp.status_code == 409
+    assert resp.json()["detail"]["reason"] == "application_terminal"
+    assert resp.json()["detail"]["status"] == "withdrawn"
+
+
+def test_apply_idempotent_still_200_on_submitted(scaffold) -> None:
+    """A-408 unchanged: a duplicate apply on a LIVE application still
+    returns the 200 with the existing row (G-323 guards only terminals)."""
+    resp = scaffold["client"].post(
+        "/v1/marketplace/apply",
+        json={"posting_id": scaffold["posting_id"], "learner_id": "pilot-learner"},
+    )
+    assert resp.status_code == 200
+    assert resp.json()["application_id"] == scaffold["application_id"]
+
+
+# -- the P2-review pins (P2-1/P2-2 disposition): provenance + budget -------------
+
+
+def test_withdraw_ledger_actor_is_learner(scaffold) -> None:
+    """D-104 pin: the withdraw transition's ledger event records
+    actor_type='learner' with the learner's actor_ref."""
+
+    scaffold["client"].post(
+        f"/v1/marketplace/applications/{scaffold['application_id']}/withdraw",
+        json={"learner_id": "pilot-learner"},
+    )
+    placements = scaffold["client"].app.state.placement_store
+    events = placements.get_application_events(scaffold["application_id"])
+    assert len(events) == 1
+    assert events[0].event_type == "application.withdrawn"
+    assert events[0].actor_type == "learner"
+    assert events[0].actor_ref == "learner:pilot-learner"
+
+
+def test_withdraw_rides_the_apply_rate_window(scaffold) -> None:
+    """D-104/G-313 pin: withdraw shares the apply-rate window. Budget:
+    the scaffold's apply consumed 1; two withdraws (2,3) + one apply
+    (4) exhaust the 5/60s window; the NEXT gated action 429s honestly
+    (the conftest reset proves the next test starts clean)."""
+    client = scaffold["client"]
+    import uuid
+
+    from ai_service.marketplace.base import Posting
+
+    store = client.app.state.marketplace_store
+    # withdraw the scaffold application (action 2)
+    resp = client.post(
+        f"/v1/marketplace/applications/{scaffold['application_id']}/withdraw",
+        json={"learner_id": "pilot-learner"},
+    )
+    assert resp.status_code == 200, resp.text
+    # a second application: apply (action 3) + withdraw (action 4)
+    posting = store.insert_posting(
+        Posting(
+            id=f"post-w-{uuid.uuid4().hex[:6]}",
+            source="admin",
+            external_id=f"w-{uuid.uuid4().hex[:8]}",
+            employer_id="emp-test",
+            title="Posting",
+        )
+    )
+    store.set_posting_status(posting.id, "published")
+    application_id = _apply(client, posting.id)
+    resp = client.post(
+        f"/v1/marketplace/applications/{application_id}/withdraw",
+        json={"learner_id": "pilot-learner"},
+    )
+    assert resp.status_code == 200, resp.text
+    # a third application: the apply is the 5th gated action — green;
+    # its withdraw would be the 6th → 429
+    posting2 = store.insert_posting(
+        Posting(
+            id=f"post-w2-{uuid.uuid4().hex[:6]}",
+            source="admin",
+            external_id=f"w2-{uuid.uuid4().hex[:8]}",
+            employer_id="emp-test",
+            title="Posting",
+        )
+    )
+    store.set_posting_status(posting2.id, "published")
+    application2 = _apply(client, posting2.id)
+    resp = client.post(
+        f"/v1/marketplace/applications/{application2}/withdraw",
+        json={"learner_id": "pilot-learner"},
+    )
+    assert resp.status_code == 429

apps/ai-service/tests/placements/test_reporting.py

@@ -0,0 +1,220 @@
+"""Reporting tests (D-107, REQ-11-003) — the distinct-learner rule,
+cohort bucketing, revoke exclusion, the per-employer view's gates."""
+
+from __future__ import annotations
+
+import uuid
+
+import pytest
+from fastapi.testclient import TestClient
+
+from ai_service.marketplace.base import Employer, Posting
+from ai_service.marketplace.store import SQLiteMarketplaceStore
+from ai_service.placements.store import SQLitePlacementStore
+
+from .conftest import ADMIN_TOKEN, make_client
+
+
+def _seed_posting(store: SQLiteMarketplaceStore, employer_id: str) -> str:
+    store.upsert_employer(
+        Employer(
+            id=employer_id,
+            source="seed-corpus",
+            external_id=employer_id,
+            name=f"Labs {employer_id}",
+        )
+    )
+    posting = store.insert_posting(
+        Posting(
+            id=f"post-{uuid.uuid4().hex[:10]}",
+            source="admin",
+            external_id=f"t-{uuid.uuid4().hex[:10]}",
+            employer_id=employer_id,
+            title="AI Orchestration Engineer",
+        )
+    )
+    store.set_posting_status(posting.id, "published")
+    return posting.id
+
+
+def _hire_direct(
+    placements: SQLitePlacementStore,
+    marketplace: SQLiteMarketplaceStore,
+    posting_id: str,
+    learner_id: str,
+    role_title: str = "Engineer",
+    start_date: str = "2026-11-01",
+) -> str:
+    """Direct store-level hire (the route arms are P2-tested; here we
+    exercise the REPORTING computation over placement rows)."""
+    application, _ = marketplace.insert_application(posting_id, learner_id)
+    _, placement = placements.transition_application(
+        application.id,
+        "hired",
+        actor_type="operator",
+        actor_ref="operator",
+        role_title=role_title,
+        start_date=__import__("datetime").date.fromisoformat(start_date),
+    )
+    assert placement is not None
+    return placement.id
+
+
+@pytest.fixture()
+def scaffold(tmp_path, identity_store, marketplace_store):
+    client = make_client(tmp_path, identity_store, marketplace_store)
+    with client as entered:
+        placements = entered.app.state.placement_store  # type: ignore[attr-defined]  # TestClient.app: ASGIApp-typed, runtime FastAPI
+        yield {
+            "client": entered,
+            "placements": placements,
+            "marketplace": marketplace_store,
+        }
+
+
+def _overview(client: TestClient) -> dict:
+    resp = client.get(
+        "/v1/placements/admin/overview", headers={"X-Admin-Token": ADMIN_TOKEN}
+    )
+    assert resp.status_code == 200, resp.text
+    return resp.json()
+
+
+def test_empty_overview_honest_zeroes(scaffold) -> None:
+    body = _overview(scaffold["client"])
+    assert body["total_active_placements"] == 0
+    assert body["distinct_learners_placed"] == 0
+    assert body["guiding_goal"] == 1000
+    assert body["by_employer"] == []
+    assert body["by_cohort_month"] == []
+
+
+def test_distinct_learner_rule(scaffold) -> None:
+    """D-107: a learner placed TWICE counts ONCE toward the guiding
+    goal (the outcome's noun is learners); both placements count in
+    total_active_placements."""
+    s = scaffold
+    posting_a = _seed_posting(s["marketplace"], "emp-a")
+    posting_b = _seed_posting(s["marketplace"], "emp-b")
+    _hire_direct(s["placements"], s["marketplace"], posting_a, "pilot-learner")
+    _hire_direct(s["placements"], s["marketplace"], posting_b, "pilot-learner")
+    body = _overview(s["client"])
+    assert body["total_active_placements"] == 2
+    assert body["distinct_learners_placed"] == 1  # placed twice, counted once
+    assert body["by_employer"] == [
+        {"employer_id": "emp-a", "count": 1},
+        {"employer_id": "emp-b", "count": 1},
+    ]
+
+
+def test_cohort_month_bucketing(scaffold) -> None:
+    """D-107/D-103: cohort month = the calendar month of start_date —
+    two starts in one month share a bucket; a future-dated start
+    lands in its own month."""
+    s = scaffold
+    posting_a = _seed_posting(s["marketplace"], "emp-a")
+    posting_b = _seed_posting(s["marketplace"], "emp-a")
+    posting_c = _seed_posting(s["marketplace"], "emp-a")
+    _hire_direct(s["placements"], s["marketplace"], posting_a, "pilot-learner",
+                 start_date="2026-11-01")
+    _hire_direct(s["placements"], s["marketplace"], posting_b, "pilot-learner-2",
+                 start_date="2026-11-20")
+    _hire_direct(s["placements"], s["marketplace"], posting_c, "api-learner",
+                 start_date="2027-02-05")
+    body = _overview(s["client"])
+    assert body["by_cohort_month"] == [
+        {"month": "2026-11", "count": 2},
+        {"month": "2027-02", "count": 1},
+    ]
+
+
+def test_revoke_excluded_from_counts(scaffold) -> None:
+    """D-102/D-107: revoked placements are gone from every count; a
+    learner whose ONLY placement was revoked is back to 0."""
+    s = scaffold
+    posting = _seed_posting(s["marketplace"], "emp-a")
+    placement_id = _hire_direct(s["placements"], s["marketplace"], posting,
+                                "pilot-learner")
+    before = _overview(s["client"])
+    assert before["distinct_learners_placed"] == 1
+
+    s["placements"].revoke_placement(placement_id, "operator")
+
+    after = _overview(s["client"])
+    assert after["total_active_placements"] == 0
+    assert after["distinct_learners_placed"] == 0  # back to 0
+    assert after["by_employer"] == []
+    assert after["by_cohort_month"] == []
+
+
+def test_overview_fail_closed(scaffold) -> None:
+    resp = scaffold["client"].get("/v1/placements/admin/overview")
+    assert resp.status_code == 403
+
+
+def test_per_employer_view_own_rows(scaffold) -> None:
+    """The employer placement view: session-gated, own claimed entity
+    only; honest empty state (403 + claim-CTA unclaimed; 401 no token)."""
+    s = scaffold
+    posting = _seed_posting(s["marketplace"], "emp-a")
+    _hire_direct(s["placements"], s["marketplace"], posting, "pilot-learner")
+
+    # 401 without a session
+    resp = s["client"].get("/v1/employers/placements")
+    assert resp.status_code == 401
+
+    # 403 + claim-CTA when unclaimed
+    resp = s["client"].post(
+        "/v1/employers/auth/register",
+        json={"email": "viewer@example.com", "password": "hunter2hunter2"},
+    )
+    token = resp.json()["token"]
+    resp = s["client"].get(
+        "/v1/employers/placements", headers={"Authorization": f"Bearer {token}"}
+    )
+    assert resp.status_code == 403
+    assert "no_claimed_employer" in str(resp.json()["detail"])
+
+    # the honest empty state for a claimed entity with zero placements
+    store = s["client"].app.state.marketplace_store
+    store.upsert_employer(
+        Employer(
+            id="emp-b",
+            source="seed-corpus",
+            external_id="emp-b",
+            name="Labs emp-b",
+        )
+    )
+    resp = s["client"].post(
+        "/v1/employers/claims",
+        json={"employer_id": "emp-b"},
+        headers={"Authorization": f"Bearer {token}"},
+    )
+    assert resp.status_code in (200, 201), resp.text
+    claim_id = resp.json()["id"]
+    s["client"].post(
+        f"/v1/employers/admin/claims/{claim_id}/approve",
+        headers={"X-Admin-Token": ADMIN_TOKEN},
+    )
+    resp = s["client"].get(
+        "/v1/employers/placements", headers={"Authorization": f"Bearer {token}"}
+    )
+    assert resp.status_code == 200
+    assert resp.json()["total"] == 0
+    assert resp.json()["placements"] == []
+
+
+def test_by_employer_ordering(scaffold) -> None:
+    """R-73: by_employer is count desc then employer_id ascending."""
+    s = scaffold
+    posting_a1 = _seed_posting(s["marketplace"], "emp-a")
+    posting_b1 = _seed_posting(s["marketplace"], "emp-b")
+    posting_b2 = _seed_posting(s["marketplace"], "emp-b")
+    _hire_direct(s["placements"], s["marketplace"], posting_a1, "pilot-learner")
+    _hire_direct(s["placements"], s["marketplace"], posting_b1, "pilot-learner-2")
+    _hire_direct(s["placements"], s["marketplace"], posting_b2, "api-learner")
+    body = _overview(s["client"])
+    assert body["by_employer"] == [
+        {"employer_id": "emp-b", "count": 2},
+        {"employer_id": "emp-a", "count": 1},
+    ]

apps/ai-service/tests/placements/test_store.py

@@ -0,0 +1,585 @@
+"""Placement store tests (D-111, REQ-11-001) — the ledger's adversarial
+suite: chain verification, tamper, fork, concurrency, no-delete-path,
+the D-099 matrix, the D-102 revoke/re-hire lane.
+
+Real stores on tmp_path DBs, zero network by construction (no
+MockTransport needed — no external calls exist), real scrypt-free
+paths, honest assertions (behavior over bytes).
+"""
+
+from __future__ import annotations
+
+import sqlite3
+import uuid
+from datetime import UTC, date, datetime, timedelta, timezone
+from pathlib import Path
+
+import pytest
+from sqlalchemy.exc import IntegrityError
+from sqlmodel import Session
+
+from ai_service.marketplace.base import Posting
+from ai_service.marketplace.store import (
+    ApplicationRow,
+    SQLiteMarketplaceStore,
+)
+from ai_service.placements.base import (
+    APPLICATION_STATUSES,
+    GENESIS_HASH,
+    TRANSITION_MATRIX,
+    InvalidTransition,
+    validate_transition,
+)
+from ai_service.placements.store import PlacementEventRow, SQLitePlacementStore
+
+# -- helpers -----------------------------------------------------------------
+
+
+def _seed_posting(store: SQLiteMarketplaceStore, employer_id: str = "emp-test") -> str:
+    """Insert a draft posting via the store's own path → its id."""
+    posting = store.insert_posting(
+        Posting(
+            id=f"post-{uuid.uuid4().hex[:12]}",
+            source="admin",
+            external_id=f"test-{uuid.uuid4().hex[:8]}",
+            employer_id=employer_id,
+            title="AI Orchestration Engineer",
+            description="Test posting",
+            required_competencies=["orchestration"],
+            skills=["python"],
+        )
+    )
+    return posting.id
+
+
+def _apply(store: SQLiteMarketplaceStore, posting_id: str, learner_id: str) -> ApplicationRow:
+    application, _created = store.insert_application(posting_id, learner_id)
+    with Session(store._engine) as session:
+        row = session.get(ApplicationRow, application.id)
+        assert row is not None
+        return row
+
+
+def _hire(
+    store: SQLitePlacementStore,
+    application_id: str,
+    actor: str = "operator",
+    now: datetime | None = None,
+) -> object:
+    return store.transition_application(
+        application_id,
+        "hired",
+        actor_type="operator",
+        actor_ref=actor,
+        role_title="AI Orchestration Engineer",
+        start_date=date(2026, 11, 1),
+        now=now,
+    )
+
+
+# -- D-099 matrix (base contracts) ---------------------------------------------
+
+
+def test_genesis_hash_pinned() -> None:
+    assert GENESIS_HASH == "0" * 64
+
+
+def test_transition_matrix_forward_only_with_skip_forward() -> None:
+    # forward legal
+    assert "in_review" in TRANSITION_MATRIX["submitted"]
+    # skip-forward legal (the fast-track hire — R-71)
+    assert "hired" in TRANSITION_MATRIX["submitted"]
+    assert "interview" in TRANSITION_MATRIX["submitted"]
+    # terminals empty
+    assert TRANSITION_MATRIX["hired"] == ()
+    assert TRANSITION_MATRIX["rejected"] == ()
+    assert TRANSITION_MATRIX["withdrawn"] == ()
+    # every status is a matrix key
+    for status in APPLICATION_STATUSES:
+        assert status in TRANSITION_MATRIX
+
+
+def test_validate_transition_arms() -> None:
+    validate_transition("submitted", "hired")  # skip-forward
+    validate_transition("in_review", "rejected")
+    with pytest.raises(InvalidTransition):
+        validate_transition("offer", "in_review")  # backward — illegal
+    with pytest.raises(InvalidTransition):
+        validate_transition("hired", "rejected")  # terminal-source
+    with pytest.raises(InvalidTransition):
+        validate_transition("submitted", "garbage")  # unknown target
+    with pytest.raises(InvalidTransition):
+        validate_transition("garbage", "hired")  # unknown source
+
+
+# -- schema pins ---------------------------------------------------------------
+
+
+def test_tables_exist_in_sqlite_master(placement_store: SQLitePlacementStore) -> None:
+    with sqlite3.connect(placement_store._db_path) as conn:
+        rows = {
+            name
+            for (name,) in conn.execute(
+                "SELECT name FROM sqlite_master WHERE type='table'"
+            )
+        }
+    assert "placement" in rows
+    assert "placement_event" in rows
+
+
+def test_partial_unique_index_pinned(placement_store: SQLitePlacementStore) -> None:
+    """G-316 shape: the partial UNIQUE index exists in sqlite_master
+    (the test_claims_store template)."""
+    with sqlite3.connect(placement_store._db_path) as conn:
+        rows = {
+            sql
+            for (sql,) in conn.execute(
+                "SELECT sql FROM sqlite_master WHERE type='index' AND name=?",
+                ("uq_active_placement_per_application",),
+            )
+        }
+    assert rows, "partial index missing"
+    sql = rows.pop()
+    assert "CREATE UNIQUE INDEX" in sql
+    assert "status='active'" in sql
+
+
+def test_no_delete_path_in_source() -> None:
+    """R-70: the module carries NO delete method and NO DELETE SQL —
+    deleting the top ledger row would make INTEGER PRIMARY KEY reuse
+    max+1 (chain-integrity hole)."""
+    from ai_service.placements import store as placements_store_module
+
+    source = Path(placements_store_module.__file__).read_text()
+    assert "DELETE FROM" not in source
+    assert "def delete" not in source
+    assert "session.delete" not in source
+
+
+# -- the transition + chain -----------------------------------------------------
+
+
+def test_transition_flow_creates_chained_events(
+    marketplace_store: SQLiteMarketplaceStore,
+    placement_store: SQLitePlacementStore,
+) -> None:
+    posting_id = _seed_posting(marketplace_store)
+    application = _apply(marketplace_store, posting_id, "pilot-learner")
+
+    app1, placement_none = placement_store.transition_application(
+        application.id, "in_review", actor_type="employer", actor_ref="account:a1"
+    )
+    assert app1.status == "in_review"
+    assert placement_none is None
+
+    app2, _ = placement_store.transition_application(
+        application.id, "interview", actor_type="employer", actor_ref="account:a1"
+    )
+    assert app2.status == "interview"
+
+    app3, placement = placement_store.transition_application(
+        application.id,
+        "hired",
+        actor_type="employer",
+        actor_ref="account:a1",
+        role_title="AI Orchestration Engineer",
+        start_date=date(2026, 11, 1),
+    )
+    assert app3.status == "hired"
+    assert placement is not None
+    assert placement.status == "active"
+    assert placement.role_title == "AI Orchestration Engineer"
+    assert placement.start_date == "2026-11-01"
+    assert placement.learner_id == "pilot-learner"
+    assert placement.employer_id == "emp-test"
+
+    events = placement_store.get_application_events(application.id)
+    assert [e.event_type for e in events] == [
+        "application.in_review",
+        "application.interview",
+        "application.hired",
+        "placement.created",
+    ]
+    # the chain walks green end-to-end
+    ok, head = placement_store.verify_chain()
+    assert ok is True
+    assert head == events[-1].hash
+
+
+def test_hire_requires_role_title_and_start_date(
+    marketplace_store: SQLiteMarketplaceStore,
+    placement_store: SQLitePlacementStore,
+) -> None:
+    posting_id = _seed_posting(marketplace_store)
+    application = _apply(marketplace_store, posting_id, "pilot-learner")
+    with pytest.raises(ValueError, match="role_title"):
+        placement_store.transition_application(
+            application.id, "hired", actor_type="employer", actor_ref="account:a1"
+        )
+    with pytest.raises(ValueError, match="start_date"):
+        placement_store.transition_application(
+            application.id,
+            "hired",
+            actor_type="employer",
+            actor_ref="account:a1",
+            role_title="Engineer",
+        )
+
+
+def test_matrix_illegal_moves_raise(
+    marketplace_store: SQLiteMarketplaceStore,
+    placement_store: SQLitePlacementStore,
+) -> None:
+    posting_id = _seed_posting(marketplace_store)
+    application = _apply(marketplace_store, posting_id, "pilot-learner")
+    placement_store.transition_application(
+        application.id, "offer", actor_type="employer", actor_ref="account:a1"
+    )
+    # backward — 409 class
+    with pytest.raises(InvalidTransition):
+        placement_store.transition_application(
+            application.id, "in_review", actor_type="employer", actor_ref="account:a1"
+        )
+    # terminal-source after hire
+    placement_store.transition_application(
+        application.id,
+        "hired",
+        actor_type="employer",
+        actor_ref="account:a1",
+        role_title="Engineer",
+        start_date=date(2026, 12, 1),
+    )
+    with pytest.raises(InvalidTransition):
+        placement_store.transition_application(
+            application.id, "rejected", actor_type="employer", actor_ref="account:a1"
+        )
+    # unknown application
+    with pytest.raises(InvalidTransition):
+        placement_store.transition_application(
+            "app-nonexistent", "in_review", actor_type="operator", actor_ref="operator"
+        )
+
+
+def test_unknown_status_rejected(
+    marketplace_store: SQLiteMarketplaceStore,
+    placement_store: SQLitePlacementStore,
+) -> None:
+    posting_id = _seed_posting(marketplace_store)
+    application = _apply(marketplace_store, posting_id, "pilot-learner")
+    with pytest.raises(InvalidTransition):
+        placement_store.transition_application(
+            application.id, "garbage", actor_type="operator", actor_ref="operator"
+        )
+
+
+def test_tz_round_trip_canonical_stable(
+    marketplace_store: SQLiteMarketplaceStore,
+    placement_store: SQLitePlacementStore,
+) -> None:
+    """R-79: naive stored → _as_utc read → canonical isoformat stable —
+    the hashing path and the reading path share canonical_json()."""
+    posting_id = _seed_posting(marketplace_store)
+    application = _apply(marketplace_store, posting_id, "pilot-learner")
+    moment = datetime(2026, 10, 1, 12, 0, 0, tzinfo=UTC)
+    placement_store.transition_application(
+        application.id,
+        "in_review",
+        actor_type="employer",
+        actor_ref="account:a1",
+        now=moment,
+    )
+    events = placement_store.list_events()
+    assert len(events) == 1
+    raw = events[0]
+    # the canonical form is a pure function of the row — recompute twice
+    assert raw.canonical_json() == raw.canonical_json()
+    ok, _ = placement_store.verify_chain()
+    assert ok is True
+
+
+def test_aware_non_utc_now_converted_chain_stays_green(
+    marketplace_store: SQLiteMarketplaceStore,
+    placement_store: SQLitePlacementStore,
+) -> None:
+    """P0-1 (security review): an aware NON-UTC `now` CONVERTS to the
+    true instant — the append-time and read-back canonical forms are
+    identical, so the chain walks green (a re-labeled offset would
+    hash 12:00-04:00 and re-read 12:00+00:00 — permanently broken)."""
+    posting_id = _seed_posting(marketplace_store)
+    application = _apply(marketplace_store, posting_id, "pilot-learner")
+    edt = timezone(timedelta(hours=-4))
+    placement_store.transition_application(
+        application.id,
+        "in_review",
+        actor_type="employer",
+        actor_ref="account:a1",
+        now=datetime(2026, 10, 1, 12, 0, 0, tzinfo=edt),
+    )
+    ok, _ = placement_store.verify_chain()
+    assert ok is True
+
+
+def test_actor_type_vocabulary_enforced(
+    marketplace_store: SQLiteMarketplaceStore,
+    placement_store: SQLitePlacementStore,
+) -> None:
+    """P1-1 (security review): the store boundary rejects an actor_type
+    outside the closed vocabulary — a bad label would be frozen in
+    immutable history."""
+    posting_id = _seed_posting(marketplace_store)
+    application = _apply(marketplace_store, posting_id, "pilot-learner")
+    with pytest.raises(ValueError, match="actor_type"):
+        placement_store.transition_application(
+            application.id,
+            "in_review",
+            actor_type="ghost-actor",
+            actor_ref="account:a1",
+        )
+
+
+def test_payload_floats_rejected(
+    marketplace_store: SQLiteMarketplaceStore,
+    placement_store: SQLitePlacementStore,
+) -> None:
+    """R-69: payload values str/int/bool/None only — floats REJECTED."""
+    posting_id = _seed_posting(marketplace_store)
+    application = _apply(marketplace_store, posting_id, "pilot-learner")
+    session = Session(placement_store._engine)
+    try:
+        row = PlacementEventRow(
+            application_id=application.id,
+            placement_id=None,
+            event_type="application.in_review",
+            actor_type="employer",
+            actor_ref="account:a1",
+            payload={"ratio": 0.5},
+            prev_hash=GENESIS_HASH,
+            hash="",
+            created_at=datetime.now(UTC),
+        )
+        with pytest.raises(ValueError, match="str/int/bool/None"):
+            row._validate()
+    finally:
+        session.close()
+
+
+# -- tamper / fork / concurrency (the adversarial arms, D-111) ------------------
+
+
+def test_tamper_detected_via_second_engine(
+    tmp_path: Path,
+    marketplace_store: SQLiteMarketplaceStore,
+    placement_store: SQLitePlacementStore,
+) -> None:
+    """Direct row mutation through a SECOND engine on the same file →
+    the verification walk FAILS (R-78: the mutation commits before the
+    walk reads — WAL snapshot isolation)."""
+    posting_id = _seed_posting(marketplace_store)
+    application = _apply(marketplace_store, posting_id, "pilot-learner")
+    placement_store.transition_application(
+        application.id, "in_review", actor_type="employer", actor_ref="account:a1"
+    )
+    ok_before, _ = placement_store.verify_chain()
+    assert ok_before is True
+
+    with sqlite3.connect(placement_store._db_path) as conn:
+        conn.execute(
+            "UPDATE placement_event SET actor_ref = 'account:evil' WHERE id = 1"
+        )
+        conn.commit()
+
+    ok_after, _ = placement_store.verify_chain()
+    assert ok_after is False
+
+
+def test_fork_prev_hash_surfaces_integrity_error(
+    placement_store: SQLitePlacementStore,
+) -> None:
+    """G-316 backstop class: a second row claiming the same prev_hash
+    → UNIQUE refuses it, IntegrityError SURFACES."""
+    with pytest.raises(IntegrityError):
+        with Session(placement_store._engine) as session:
+            for _i in range(2):
+                row = PlacementEventRow(
+                    application_id="app-x",
+                    placement_id=None,
+                    event_type="application.in_review",
+                    actor_type="employer",
+                    actor_ref="account:a1",
+                    payload={},
+                    prev_hash=GENESIS_HASH,
+                    hash="",
+                    created_at=datetime.now(UTC),
+                )
+                session.add(row)
+                session.flush()
+                row.hash = "computed-later"
+                session.flush()
+            session.commit()
+
+
+def test_concurrent_transition_one_winner(
+    marketplace_store: SQLiteMarketplaceStore,
+    tmp_path: Path,
+) -> None:
+    """R-78: two stores (separate engines) race the same application —
+    one winner commits; the loser surfaces an honest error (never two
+    events on one prev_hash)."""
+    db_path = tmp_path / "shared.db"
+    store_a = SQLitePlacementStore(db_path=db_path)
+    store_b = SQLitePlacementStore(db_path=db_path)
+    marketplace = SQLiteMarketplaceStore(db_path=db_path)
+    try:
+        posting_id = _seed_posting(marketplace)
+        application = _apply(marketplace, posting_id, "pilot-learner")
+        # both read the same submitted status; A commits first
+        store_a.transition_application(
+            application.id, "in_review", actor_type="employer", actor_ref="account:a"
+        )
+        with pytest.raises((InvalidTransition, IntegrityError)):
+            store_b.transition_application(
+                application.id, "in_review", actor_type="employer", actor_ref="account:b"
+            )
+        ok, _ = store_a.verify_chain()
+        assert ok is True
+        # exactly ONE in_review event exists
+        events = store_a.get_application_events(application.id)
+        assert [e.event_type for e in events] == ["application.in_review"]
+    finally:
+        store_a.close()
+        store_b.close()
+        marketplace.close()
+
+
+# -- the D-102 correction lane ---------------------------------------------------
+
+
+def test_revoke_and_rehire(
+    marketplace_store: SQLiteMarketplaceStore,
+    placement_store: SQLitePlacementStore,
+) -> None:
+    posting_id = _seed_posting(marketplace_store)
+    application = _apply(marketplace_store, posting_id, "pilot-learner")
+    _, placement = placement_store.transition_application(
+        application.id,
+        "hired",
+        actor_type="employer",
+        actor_ref="account:a1",
+        role_title="Engineer",
+        start_date=date(2026, 11, 1),
+    )
+    assert placement is not None
+
+    # revoke: active → revoked + event
+    revoked = placement_store.revoke_placement(placement.id, "operator")
+    assert revoked is not None and revoked.status == "revoked"
+
+    # rehire after revoke: a FRESH active row (R-80) — decided_at =
+    # the re-hire event's stamp (G-326)
+    moment = datetime(2026, 10, 2, 9, 30, 0, tzinfo=UTC)
+    rehired = placement_store.rehire_placement(
+        application.id,
+        role_title="Engineer II",
+        start_date=date(2026, 12, 15),
+        actor_ref="operator",
+        now=moment,
+    )
+    assert rehired.status == "active"
+    assert rehired.id != placement.id
+    assert rehired.decided_at == moment
+
+    # the three-event ledger sequence: hired → revoked → rehired
+    events = placement_store.get_application_events(application.id)
+    assert [e.event_type for e in events] == [
+        "application.hired",
+        "placement.created",
+        "placement.revoked",
+        "placement.rehired",
+    ]
+
+    # the revoked placement stays in history (D-102)
+    statuses = {p.status for p in placement_store.list_placements()}
+    assert statuses == {"active", "revoked"}
+
+    ok, _ = placement_store.verify_chain()
+    assert ok is True
+
+
+def test_revoke_only_active(
+    marketplace_store: SQLiteMarketplaceStore,
+    placement_store: SQLitePlacementStore,
+) -> None:
+    posting_id = _seed_posting(marketplace_store)
+    application = _apply(marketplace_store, posting_id, "pilot-learner")
+    _, placement = placement_store.transition_application(
+        application.id,
+        "hired",
+        actor_type="employer",
+        actor_ref="account:a1",
+        role_title="Engineer",
+        start_date=date(2026, 11, 1),
+    )
+    assert placement is not None
+    placement_store.revoke_placement(placement.id, "operator")
+    with pytest.raises(InvalidTransition):
+        placement_store.revoke_placement(placement.id, "operator")
+    assert placement_store.revoke_placement("plc-nonexistent", "operator") is None
+
+
+def test_rehire_requires_hired_application(
+    marketplace_store: SQLiteMarketplaceStore,
+    placement_store: SQLitePlacementStore,
+) -> None:
+    posting_id = _seed_posting(marketplace_store)
+    application = _apply(marketplace_store, posting_id, "pilot-learner")
+    # not hired yet → re-hire is the correction lane for a hired app only
+    with pytest.raises(InvalidTransition):
+        placement_store.rehire_placement(
+            application.id,
+            role_title="Engineer",
+            start_date=date(2026, 11, 1),
+            actor_ref="operator",
+        )
+
+
+def test_rehire_second_active_surfaces_integrity_error(
+    marketplace_store: SQLiteMarketplaceStore,
+    placement_store: SQLitePlacementStore,
+) -> None:
+    """The partial-unique arm: re-hire WITHOUT revoke → the partial
+    UNIQUE index refuses the second ACTIVE row (the caller's honest
+    409)."""
+    posting_id = _seed_posting(marketplace_store)
+    application = _apply(marketplace_store, posting_id, "pilot-learner")
+    placement_store.transition_application(
+        application.id,
+        "hired",
+        actor_type="employer",
+        actor_ref="account:a1",
+        role_title="Engineer",
+        start_date=date(2026, 11, 1),
+    )
+    with pytest.raises(IntegrityError):
+        placement_store.rehire_placement(
+            application.id,
+            role_title="Engineer II",
+            start_date=date(2026, 12, 1),
+            actor_ref="operator",
+        )
+
+
+def test_chain_walk_after_n_appends(
+    marketplace_store: SQLiteMarketplaceStore,
+    placement_store: SQLitePlacementStore,
+) -> None:
+    posting_id = _seed_posting(marketplace_store)
+    application = _apply(marketplace_store, posting_id, "pilot-learner")
+    for to_status in ("in_review", "interview", "offer", "rejected"):
+        placement_store.transition_application(
+            application.id, to_status, actor_type="employer", actor_ref="account:a1"
+        )
+    events = placement_store.list_events()
+    assert len(events) == 4
+    ok, head = placement_store.verify_chain()
+    assert ok is True
+    assert head == events[-1].hash

apps/web/app/(employer)/employer/applications/page.tsx

@@ -0,0 +1,31 @@
+import { Badge } from '@nextcraft/ui';
+import { EmployerApplicationsClient } from '../../../../components/employer/employer-applications-client';
+
+/**
+ * The hiring pipeline (v0.11, REQ-11-002/003, D-109 surface 1): own
+ * applications with the seven D-099 status badges, per-target
+ * transition CTAs, and the hire form {role_title, start_date}
+ * (employer-attested, D-103). Session-gated shell with honest
+ * loading/error/empty/claim states (the A-406 board-client
+ * discipline). learner_id IS visible here — the G-319 supersession
+ * scopes it to the session's own claimed-entity postings (D-105).
+ */
+export default function ApplicationsPage() {
+  return (
+    <div className="flex flex-col gap-6">
+      <header className="flex flex-col gap-2">
+        <Badge variant="info">Hiring Pipeline</Badge>
+        <h1 className="text-3xl font-bold tracking-tight text-slate-900 dark:text-slate-100">
+          Hiring Pipeline
+        </h1>
+        <p className="max-w-2xl text-slate-600 dark:text-slate-400">
+          Review applicants on your postings and drive them through the hiring
+          lifecycle — in review, interview, offer, reject, or hire. A hire
+          records the placement with the role title and start date you attest.
+        </p>
+      </header>
+
+      <EmployerApplicationsClient />
+    </div>
+  );
+}

apps/web/components/admin/employer-network-panel.tsx

@@ -8,6 +8,7 @@ import type {
   AdminClaimsResponse,
   EmployerClaim,
   EmployerClaimEvidence,
+  PlacementOverview,
 } from '@nextcraft/types';
 import {
   listEmployerAdminAccounts,
@@ -15,6 +16,9 @@ import {
   listEmployerAdminAudit,
   approveEmployerAdminClaim,
   rejectEmployerAdminClaim,
+  getPlacementOverview,
+  getPlacementExport,
+  getPlacementExportSummary,
   setAdminToken,
   EngineError,
 } from '../../lib/engine-client';
@@ -58,6 +62,10 @@ export function EmployerNetworkPanel() {
   const [accounts, setAccounts] = useState<AdminAccountsResponse | null>(null);
   const [claims, setClaims] = useState<AdminClaimsResponse | null>(null);
   const [audit, setAudit] = useState<AdminAuditResponse | null>(null);
+  const [overview, setOverview] = useState<PlacementOverview | null>(null);
+  const [exportSummary, setExportSummary] = useState<string | null>(null);
+  const [exportBusy, setExportBusy] = useState(false);
+  const [exportError, setExportError] = useState<string | null>(null);
   const [locked, setLocked] = useState(false);
   const [error, setError] = useState<string | null>(null);
   const [loading, setLoading] = useState(false);
@@ -75,14 +83,18 @@ export function EmployerNetworkPanel() {
     try {
       // All three operator reads ride the SAME admin transport; a 403
       // on any of them locks the whole overview (one token, one gate).
-      const [acct, queue, trail] = await Promise.all([
+      const [acct, queue, trail, placed] = await Promise.all([
         listEmployerAdminAccounts(controller.signal),
         listEmployerAdminClaims(controller.signal),
         listEmployerAdminAudit(controller.signal),
+        // v0.11 P3/P4: the placements overview rides the same admin
+        // transport + gate; a fetch failure is honest (the rest loads).
+        getPlacementOverview(controller.signal).catch(() => null),
       ]);
       setAccounts(acct);
       setClaims(queue);
       setAudit(trail);
+      setOverview(placed);
       setLocked(false);
     } catch (err) {
       if (err instanceof EngineError && err.status === 403) {
@@ -142,6 +154,39 @@ export function EmployerNetworkPanel() {
     // for the operator's explicit load — the entitlement-panel shape).
   }, []);
 
+  /** The export actions (D-109 surface 4): the summary opens IN-TAB
+   * (the markdown renders in the panel); the JSON DOWNLOADS as a
+   * blob. G-328: the surrounding copy says RECORDED placements —
+   * never a verification claim. */
+  const runExport = async (kind: 'summary' | 'download') => {
+    setExportBusy(true);
+    setExportError(null);
+    const controller = new AbortController();
+    try {
+      if (kind === 'summary') {
+        const text = await getPlacementExportSummary(controller.signal);
+        setExportSummary(text);
+      } else {
+        const text = await getPlacementExport(controller.signal);
+        const blob = new Blob([text], { type: 'application/json' });
+        const url = URL.createObjectURL(blob);
+        const link = document.createElement('a');
+        link.href = url;
+        link.download = `placement-audit-export-${new Date().toISOString().slice(0, 10)}.json`;
+        link.click();
+        URL.revokeObjectURL(url);
+      }
+    } catch (err) {
+      if (err instanceof EngineError && err.status === 403) {
+        setLocked(true);
+      } else {
+        setExportError(err instanceof Error ? err.message : 'The export failed.');
+      }
+    } finally {
+      setExportBusy(false);
+    }
+  };
+
   return (
     <Card>
       <CardBody className="flex flex-col gap-4">
@@ -174,6 +219,67 @@ export function EmployerNetworkPanel() {
 
         {accounts && claims && audit && (
           <div className="flex flex-col gap-6">
+            {/* v0.11 P3/P4 (D-109 surface 4): the placements block —
+                RECORDED placements toward the 1,000 guiding goal +
+                per-employer lists + the export links. G-328: recorded
+                placements, never a verification claim. */}
+            {overview && (
+              <div className="flex flex-col gap-2 rounded-lg border border-slate-200 p-3 dark:border-slate-800">
+                <h4 className="text-sm font-semibold uppercase tracking-wide text-slate-500 dark:text-slate-400">
+                  Recorded placements
+                </h4>
+                <p className="text-sm text-slate-700 dark:text-slate-300">
+                  <span className="text-2xl font-bold">
+                    {overview.distinct_learners_placed}
+                  </span>{' '}
+                  distinct learners placed (employer-attested records, toward
+                  the {overview.guiding_goal} guiding goal) ·{' '}
+                  {overview.total_active_placements} active placements
+                </p>
+                {overview.by_employer.length > 0 && (
+                  <ul className="flex flex-wrap gap-2 text-xs text-slate-600 dark:text-slate-400">
+                    {overview.by_employer.map((bucket) => (
+                      <li
+                        key={bucket.employer_id}
+                        className="rounded-full bg-slate-100 px-2 py-1 dark:bg-slate-800/60"
+                      >
+                        <span className="font-mono">{bucket.employer_id}</span>: {bucket.count}
+                      </li>
+                    ))}
+                  </ul>
+                )}
+                <div className="flex flex-wrap gap-2">
+                  <Button
+                    variant="secondary"
+                    size="sm"
+                    disabled={exportBusy}
+                    onClick={() => {
+                      void runExport('summary');
+                    }}
+                  >
+                    {exportBusy ? 'Working…' : 'Open export summary (in-tab)'}
+                  </Button>
+                  <Button
+                    variant="outline"
+                    size="sm"
+                    disabled={exportBusy}
+                    onClick={() => {
+                      void runExport('download');
+                    }}
+                  >
+                    {exportBusy ? 'Working…' : 'Download audit export (JSON)'}
+                  </Button>
+                </div>
+                {exportError && (
+                  <p className="text-sm text-red-700 dark:text-red-300">{exportError}</p>
+                )}
+                {exportSummary && (
+                  <pre className="max-h-80 overflow-auto whitespace-pre-wrap rounded-md bg-slate-50 p-3 text-xs text-slate-700 dark:bg-slate-800/60 dark:text-slate-300">
+                    {exportSummary}
+                  </pre>
+                )}
+              </div>
+            )}
             {/* Accounts list — email, claimed entity, created_at (the
                 UNVERIFIED marker renders as such, D-097). */}
             <div className="flex flex-col gap-2">

apps/web/components/employer/employer-applications-client.tsx

@@ -0,0 +1,342 @@
+'use client';
+
+import { useEffect, useState } from 'react';
+import { Badge, Button, Card, CardBody, Input } from '@nextcraft/ui';
+import type {
+  ApplicationStatus,
+  EmployerApplicationSummary,
+} from '@nextcraft/types';
+import {
+  listOwnEmployerApplications,
+  employerMarkInReview,
+  employerMarkInterview,
+  employerMarkOffer,
+  employerRejectApplication,
+  employerHireApplication,
+  SessionRequiredError,
+  ClaimRequiredError,
+  EngineError,
+} from '../../lib/engine-client';
+
+/**
+ * The hiring-pipeline client (v0.11, REQ-11-002/003, D-109 surface
+ * 1): the session employer's OWN applications (every status, per-
+ * status facets) with per-target transition CTAs — the matrix stays
+ * OUT of the request bodies (D-105: each call names its target).
+ * The hire form carries the employer-attested {role_title,
+ * start_date} (D-103/G-324). Withdraw is NEVER offered here (D-099:
+ * employers reject; only the learner or an operator can withdraw).
+ *
+ * Honest states (A-406): loading/error/empty/claim, per-action
+ * pending + error; a 403 cross-entity or 409 matrix arm renders from
+ * EngineError.status — NO new error classes (D-110). learner_id IS
+ * visible (the G-319 supersession, own applicants only).
+ */
+
+const STATUS_LABELS: Record<ApplicationStatus, string> = {
+  submitted: 'Submitted',
+  in_review: 'In Review',
+  interview: 'Interview',
+  offer: 'Offer',
+  hired: 'Hired',
+  rejected: 'Rejected',
+  withdrawn: 'Withdrawn',
+};
+
+const STATUS_BADGE: Record<ApplicationStatus, 'default' | 'info' | 'success' | 'warning' | 'error'> = {
+  submitted: 'default',
+  in_review: 'info',
+  interview: 'info',
+  offer: 'warning',
+  hired: 'success',
+  rejected: 'error',
+  withdrawn: 'default',
+};
+
+/** The next legal targets per the D-099 matrix (forward-only with
+ * skip-forward — the CTA set matches the store's transition set). */
+const NEXT_TARGETS: Record<string, Array<{ key: string; label: string }>> = {
+  submitted: [
+    { key: 'in-review', label: 'In Review' },
+    { key: 'interview', label: 'Interview' },
+    { key: 'reject', label: 'Reject' },
+    { key: 'hire', label: 'Hire' },
+  ],
+  in_review: [
+    { key: 'interview', label: 'Interview' },
+    { key: 'offer', label: 'Offer' },
+    { key: 'reject', label: 'Reject' },
+    { key: 'hire', label: 'Hire' },
+  ],
+  interview: [
+    { key: 'offer', label: 'Offer' },
+    { key: 'reject', label: 'Reject' },
+    { key: 'hire', label: 'Hire' },
+  ],
+  offer: [
+    { key: 'reject', label: 'Reject' },
+    { key: 'hire', label: 'Hire' },
+  ],
+};
+
+export function EmployerApplicationsClient() {
+  const [applications, setApplications] = useState<EmployerApplicationSummary[] | null>(null);
+  const [loggedOut, setLoggedOut] = useState(false);
+  const [claimPrompt, setClaimPrompt] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+  const [loading, setLoading] = useState(true);
+  // per-application action state: the honest pending/error pair
+  const [pending, setPending] = useState<string | null>(null);
+  const [actionError, setActionError] = useState<string | null>(null);
+  // the hire form: which application id is being hired + its fields
+  const [hireFor, setHireFor] = useState<string | null>(null);
+  const [roleTitle, setRoleTitle] = useState('');
+  const [startDate, setStartDate] = useState('');
+
+  useEffect(() => {
+    const controller = new AbortController();
+    (async () => {
+      try {
+        const body = await listOwnEmployerApplications(controller.signal);
+        if (!controller.signal.aborted) setApplications(body.applications);
+      } catch (err) {
+        if (controller.signal.aborted) return;
+        if (err instanceof SessionRequiredError) {
+          setLoggedOut(true); // honest logged-out state — never a retry loop
+        } else if (err instanceof ClaimRequiredError) {
+          setClaimPrompt(true); // the honest claim-CTA state
+        } else {
+          setError(err instanceof Error ? err.message : 'Failed to load applications.');
+        }
+      } finally {
+        if (!controller.signal.aborted) setLoading(false);
+      }
+    })();
+    return () => controller.abort();
+  }, []);
+
+  async function runTransition(
+    application: EmployerApplicationSummary,
+    target: 'in-review' | 'interview' | 'offer' | 'reject',
+  ): Promise<void> {
+    setActionError(null);
+    setPending(application.id);
+    try {
+      const dispatch = {
+        'in-review': employerMarkInReview,
+        interview: employerMarkInterview,
+        offer: employerMarkOffer,
+        reject: employerRejectApplication,
+      }[target];
+      const body = await dispatch(application.id);
+      if (body.application_id === application.id) {
+        setApplications((prev) =>
+          (prev ?? []).map((a) => (a.id === application.id ? { ...a, status: body.status } : a)),
+        );
+      }
+    } catch (err) {
+      if (err instanceof SessionRequiredError) {
+        setLoggedOut(true);
+      } else if (err instanceof ClaimRequiredError) {
+        setClaimPrompt(true);
+      } else if (err instanceof EngineError) {
+        // the 403 cross-entity + 409 matrix arms — the honest status
+        setActionError(`${application.id}: ${err.message}`);
+      } else {
+        setActionError(err instanceof Error ? err.message : 'The transition failed.');
+      }
+    } finally {
+      setPending(null);
+    }
+  }
+
+  async function submitHire(application: EmployerApplicationSummary): Promise<void> {
+    setActionError(null);
+    setPending(application.id);
+    try {
+      const body = await employerHireApplication(application.id, {
+        role_title: roleTitle,
+        start_date: startDate,
+      });
+      setApplications((prev) =>
+        (prev ?? []).map((a) => (a.id === application.id ? { ...a, status: body.status } : a)),
+      );
+      setHireFor(null);
+      setRoleTitle('');
+      setStartDate('');
+    } catch (err) {
+      if (err instanceof SessionRequiredError) {
+        setLoggedOut(true);
+      } else if (err instanceof ClaimRequiredError) {
+        setClaimPrompt(true);
+      } else {
+        // 422 (missing/empty fields, G-324) + 409 (matrix) render here
+        setActionError(err instanceof Error ? err.message : 'The hire failed.');
+      }
+    } finally {
+      setPending(null);
+    }
+  }
+
+  if (loading) {
+    return (
+      <Card>
+        <CardBody className="py-10 text-center text-slate-600 dark:text-slate-400">
+          Loading your hiring pipeline…
+        </CardBody>
+      </Card>
+    );
+  }
+
+  if (loggedOut) {
+    return (
+      <Card>
+        <CardBody className="flex flex-col items-center gap-3 py-10 text-center">
+          <p className="text-slate-700 dark:text-slate-300">
+            You are signed out — your session is missing or expired.
+          </p>
+          <a href="/employer/login">
+            <Button variant="primary" size="md">Sign in</Button>
+          </a>
+        </CardBody>
+      </Card>
+    );
+  }
+
+  if (claimPrompt) {
+    return (
+      <Card>
+        <CardBody className="flex flex-col items-center gap-3 py-10 text-center">
+          <p className="text-slate-700 dark:text-slate-300">
+            No employer entity is claimed on this account yet.
+          </p>
+          <p className="max-w-md text-sm text-slate-600 dark:text-slate-400">
+            Claim your company&apos;s entity first — the hiring pipeline lists
+            applicants on your claimed entity&apos;s postings.
+          </p>
+        </CardBody>
+      </Card>
+    );
+  }
+
+  if (error) {
+    return (
+      <Card>
+        <CardBody className="flex flex-col items-center gap-2 py-10 text-center">
+          <p className="text-slate-700 dark:text-slate-300">{error}</p>
+          <p className="text-sm text-slate-500 dark:text-slate-400">
+            The hiring pipeline is unavailable — please try again shortly.
+          </p>
+        </CardBody>
+      </Card>
+    );
+  }
+
+  if (!applications || applications.length === 0) {
+    return (
+      <Card>
+        <CardBody className="py-10 text-center text-sm text-slate-500 dark:text-slate-400">
+          No applications yet — applicants on your published postings appear
+          here as they apply.
+        </CardBody>
+      </Card>
+    );
+  }
+
+  return (
+    <div className="flex flex-col gap-4">
+      {actionError && (
+        <Card>
+          <CardBody className="py-3 text-sm text-red-700 dark:text-red-300">{actionError}</CardBody>
+        </Card>
+      )}
+      {applications.map((application) => {
+        const targets = NEXT_TARGETS[application.status] ?? [];
+        return (
+          <Card key={application.id}>
+            <CardBody className="flex flex-col gap-3">
+              <div className="flex flex-wrap items-center justify-between gap-2">
+                <div className="flex items-center gap-2">
+                  <Badge variant={STATUS_BADGE[application.status]}>
+                    {STATUS_LABELS[application.status]}
+                  </Badge>
+                  <span className="text-sm font-medium text-slate-900 dark:text-slate-100">
+                    {application.learner_id}
+                  </span>
+                  <span className="text-xs text-slate-500 dark:text-slate-400">
+                    applied {application.created_at ? application.created_at.slice(0, 10) : ''}
+                  </span>
+                </div>
+                <span className="text-xs text-slate-400 dark:text-slate-500">
+                  {application.id}
+                </span>
+              </div>
+
+              {hireFor === application.id ? (
+                <div className="flex flex-col gap-3 rounded-lg border border-slate-200 p-3 dark:border-slate-800">
+                  <p className="text-sm font-medium text-slate-800 dark:text-slate-200">
+                    Record the placement you attest (visible to the learner and
+                    the audit export):
+                  </p>
+                  <Input
+                    label="Role title"
+                    value={roleTitle}
+                    onChange={(e) => setRoleTitle(e.target.value)}
+                    placeholder="AI Orchestration Engineer"
+                    maxLength={200}
+                  />
+                  <Input
+                    label="Employment start date"
+                    type="date"
+                    value={startDate}
+                    onChange={(e) => setStartDate(e.target.value)}
+                  />
+                  <div className="flex gap-2">
+                    <Button
+                      variant="primary"
+                      size="sm"
+                      disabled={pending === application.id || roleTitle === '' || startDate === ''}
+                      onClick={() => {
+                        void submitHire(application);
+                      }}
+                    >
+                      {pending === application.id ? 'Recording…' : 'Confirm hire'}
+                    </Button>
+                    <Button variant="outline" size="sm" onClick={() => setHireFor(null)}>
+                      Cancel
+                    </Button>
+                  </div>
+                </div>
+              ) : (
+                <div className="flex flex-wrap gap-2">
+                  {targets.map((target) => (
+                    <Button
+                      key={target.key}
+                      variant={target.key === 'reject' ? 'outline' : 'secondary'}
+                      size="sm"
+                      disabled={pending === application.id}
+                      onClick={() => {
+                        if (target.key === 'hire') {
+                          setHireFor(application.id);
+                          setActionError(null);
+                        } else {
+                          void runTransition(
+                            application,
+                            target.key as 'in-review' | 'interview' | 'offer' | 'reject',
+                          );
+                        }
+                      }}
+                    >
+                      {pending === application.id ? '…' : target.label}
+                    </Button>
+                  ))}
+                  {/* D-099: withdraw is NEVER offered to employers */}
+                </div>
+              )}
+            </CardBody>
+          </Card>
+        );
+      })}
+    </div>
+  );
+}

apps/web/components/employer/employer-overview-client.tsx

@@ -4,10 +4,16 @@ import { useEffect, useState } from 'react';
 import Link from 'next/link';
 import { Briefcase, Users, TrendingUp, Target, ArrowRight } from 'lucide-react';
 import { Badge, Button, Card, CardBody, Avatar } from '@nextcraft/ui';
-import type { EmployerProfile, EmployerMe, OwnPostingsResponse } from '@nextcraft/types';
+import type {
+  EmployerProfile,
+  EmployerMe,
+  OwnPostingsResponse,
+  EmployerPlacementsResponse,
+} from '@nextcraft/types';
 import {
   getEmployerMe,
   listOwnEmployerPostings,
+  listOwnEmployerPlacements,
   getEmployer,
   SessionRequiredError,
   ClaimRequiredError,
@@ -33,6 +39,7 @@ export function EmployerOverviewClient() {
   const [me, setMe] = useState<EmployerMe | null>(null);
   const [postings, setPostings] = useState<OwnPostingsResponse | null>(null);
   const [profile, setProfile] = useState<EmployerProfile | null>(null);
+  const [placements, setPlacements] = useState<EmployerPlacementsResponse | null>(null);
   const [loggedOut, setLoggedOut] = useState(false);
   const [claimPrompt, setClaimPrompt] = useState(false);
   const [error, setError] = useState<string | null>(null);
@@ -45,12 +52,18 @@ export function EmployerOverviewClient() {
         const meBody = await getEmployerMe(controller.signal);
         setMe(meBody);
         if (meBody.claimed_employer_id) {
-          const [own, prof] = await Promise.all([
+          const [own, prof, placed] = await Promise.all([
             listOwnEmployerPostings(controller.signal),
             getEmployer(meBody.claimed_employer_id, controller.signal).catch(() => null),
+            // v0.11 P3 (D-109 surface 2): REAL placements — the mock
+            // metric block is REPLACED (D-092: never leave a convertible
+            // surface on mock). A placements fetch failure is honest —
+            // the rest of the dashboard still renders.
+            listOwnEmployerPlacements(controller.signal).catch(() => null),
           ]);
           setPostings(own);
           setProfile(prof);
+          setPlacements(placed);
         }
       } catch (err) {
         if (controller.signal.aborted) return;
@@ -160,6 +173,10 @@ export function EmployerOverviewClient() {
   const activePostings = facets?.published ?? 0;
   const totalApplicants =
     postings?.postings.reduce((sum, p) => sum + p.applicant_count, 0) ?? 0;
+  // v0.11 P3 (D-107): the active-placement count from the rows at
+  // query time — the honest 0 when none exist.
+  const activePlacements =
+    placements?.placements.filter((p) => p.status === 'active').length ?? 0;
 
   return (
     <div className="flex flex-col gap-8">
@@ -187,13 +204,20 @@ export function EmployerOverviewClient() {
         </p>
       </header>
 
-      {/* Metric cards — postings/applicants REAL (GET /v1/employers/
-          postings); talent-match/placement stay mock-labeled (D-092). */}
+      {/* Metric cards — postings/applicants/placements REAL (GET
+          /v1/employers/postings + /placements, v0.11 P3);
+          talent-match stays mock-labeled (D-092 — no backend computes
+          it). */}
       <section className="grid grid-cols-2 gap-4 lg:grid-cols-4">
         <MetricCard label="Active Postings" value={activePostings} icon={Briefcase} tone="primary" />
         <MetricCard label="Total Applicants" value={totalApplicants} icon={Users} tone="accent" />
+        <MetricCard
+          label="Placements Recorded"
+          value={activePlacements}
+          icon={TrendingUp}
+          tone="amber"
+        />
         <MockMetricCard label="Talent Matches" value="—" icon={Target} tone="violet" />
-        <MockMetricCard label="Placement Rate" value="—" icon={TrendingUp} tone="amber" />
       </section>
 
       {/* Middle row — per-posting applicant table + claimed-entity profile */}
@@ -286,6 +310,66 @@ export function EmployerOverviewClient() {
         </div>
       </section>
 
+      {/* v0.11 P3 (D-109 surface 2, REQ-11-003): REAL placements — the
+          hired applications with role + start date. The mock
+          placement block is REPLACED (D-092); talent-match analytics
+          stay mock-labeled (no backend computes them). */}
+      <section>
+        <div className="mb-3 flex items-center justify-between">
+          <h2 className="text-lg font-semibold text-slate-900 dark:text-slate-100">
+            Placements
+          </h2>
+          <Link
+            href="/employer/applications"
+            className="inline-flex items-center gap-1 text-sm font-medium text-primary-700 hover:underline dark:text-primary-300"
+          >
+            Manage hiring pipeline <ArrowRight className="h-3.5 w-3.5" />
+          </Link>
+        </div>
+        <Card>
+          {placements && placements.placements.length > 0 ? (
+            <div className="overflow-x-auto">
+              <table className="w-full text-sm">
+                <thead>
+                  <tr className="border-b border-slate-200 text-left text-xs uppercase tracking-wide text-slate-500 dark:border-slate-800 dark:text-slate-400">
+                    <th className="p-3 font-medium">Role</th>
+                    <th className="p-3 font-medium">Learner</th>
+                    <th className="p-3 font-medium">Start Date</th>
+                    <th className="p-3 font-medium">Status</th>
+                  </tr>
+                </thead>
+                <tbody>
+                  {placements.placements.map((p) => (
+                    <tr
+                      key={p.id}
+                      className="border-b border-slate-100 last:border-0 dark:border-slate-800/60"
+                    >
+                      <td className="p-3 font-medium text-slate-900 dark:text-slate-100">
+                        {p.role_title}
+                      </td>
+                      <td className="p-3 text-slate-700 dark:text-slate-300">{p.learner_id}</td>
+                      <td className="p-3 text-slate-700 dark:text-slate-300">{p.start_date}</td>
+                      <td className="p-3">
+                        {p.status === 'active' ? (
+                          <Badge variant="success">Active</Badge>
+                        ) : (
+                          <Badge variant="default">Revoked</Badge>
+                        )}
+                      </td>
+                    </tr>
+                  ))}
+                </tbody>
+              </table>
+            </div>
+          ) : (
+            <CardBody className="py-8 text-center text-sm text-slate-500 dark:text-slate-400">
+              No placements recorded yet — hires you record in the hiring
+              pipeline appear here.
+            </CardBody>
+          )}
+        </Card>
+      </section>
+
       {/* Mock-labeled analytics (D-092: no backend computes these). */}
       <section>
         <h2 className="mb-3 text-lg font-semibold text-slate-900 dark:text-slate-100">
@@ -364,12 +448,14 @@ function PostingStatusBadge({ status }: { status: 'draft' | 'published' | 'close
 }
 
 /** D-092 honest mock label for the analytics section — the charts ride
- * nowhere until a backend computes them; the copy says so. */
+ * nowhere until a backend computes them; the copy says so. v0.11:
+ * placement COUNTS are now real (the section above) — only the
+ * talent-match analytics remain mock. */
 function MockAnalyticsNotice() {
   return (
     <p className="text-sm text-slate-500 dark:text-slate-400">
-      Talent-match and placement analytics are sample data at pilot — no backend
-      computes them yet. Real posting and applicant counts appear above.
+      Talent-match analytics are sample data at pilot — no backend computes them yet.
+      Real posting, applicant, and placement counts appear above.
     </p>
   );
 }

apps/web/components/marketplace/job-detail-client.tsx

@@ -6,6 +6,8 @@ import { notFound } from 'next/navigation';
 import { ArrowLeft, Building2, Check, MapPin, Wallet } from 'lucide-react';
 import type {
   ApplicationConfirmation,
+  ApplicationStatus,
+  LearnerApplicationStatus,
   PostingDetail,
   EmployerProfile,
   SearchResult,
@@ -24,8 +26,11 @@ import {
   VerifyRequiredError,
   applyPosting,
   getEmployer,
+  getLearnerApplicationStatus,
+  getMyApplication,
   getPosting,
   readSearchSelection,
+  withdrawApplication,
 } from '../../lib/engine-client';
 import { segmentFromPath } from '../../lib/route-id';
 
@@ -54,6 +59,12 @@ export function JobDetailClient() {
   // P3 G-106: the board's search handoff, read ONCE on mount (empty
   // when the visit is not from a search result — no score, no panel).
   const [searchSelection, setSearchSelection] = useState<SearchResult | null>(null);
+  // P5 (G-322): the learner's application on THIS posting — composed
+  // via the mine-read + the status read on every visit; never a
+  // client-persisted application id.
+  const [appStatus, setAppStatus] = useState<LearnerApplicationStatus | null>(null);
+  const [withdrawing, setWithdrawing] = useState(false);
+  const [withdrawError, setWithdrawError] = useState<string | null>(null);
 
   useEffect(() => {
     const controller = new AbortController();
@@ -76,6 +87,28 @@ export function JobDetailClient() {
         } catch {
           /* employer optional for the detail view */
         }
+        // P5 (G-322): mine-read discovery — the panel composes from this
+        // read, never a client-persisted application_id; 404 = no
+        // application → the apply CTA renders (honest absence); gate
+        // arms render their existing states.
+        try {
+          const mine = await getMyApplication(p.id, undefined, controller.signal);
+          if (controller.signal.aborted) return;
+          const status = await getLearnerApplicationStatus(
+            mine.application_id,
+            undefined,
+            controller.signal,
+          );
+          if (!controller.signal.aborted) setAppStatus(status);
+        } catch (mineErr) {
+          if (controller.signal.aborted) return;
+          if (mineErr instanceof EngineError && mineErr.status === 404) return;
+          if (mineErr instanceof VerifyRequiredError) {
+            setVerifyCta(mineErr.verifyCta);
+          }
+          // any other failure leaves the apply CTA as the honest
+          // surface — its own flow re-surfaces the gate states.
+        }
       } catch (err) {
         if (controller.signal.aborted) return;
         if (err instanceof EngineError && err.status === 404) {
@@ -97,6 +130,14 @@ export function JobDetailClient() {
     try {
       const c = await applyPosting(posting.id);
       setConfirmation(c);
+      // P5: compose the status panel from the real read (the direct
+      // response's application_id — never persisted).
+      try {
+        const status = await getLearnerApplicationStatus(c.application_id);
+        setAppStatus(status);
+      } catch {
+        /* the confirmation box renders the honest state regardless */
+      }
     } catch (err) {
       if (err instanceof VerifyRequiredError) {
         setVerifyCta(err.verifyCta);
@@ -112,6 +153,35 @@ export function JobDetailClient() {
     }
   }
 
+  async function onWithdraw() {
+    if (!appStatus) return;
+    setWithdrawing(true);
+    setWithdrawError(null);
+    try {
+      const c = await withdrawApplication(appStatus.application.id);
+      const status = await getLearnerApplicationStatus(c.application_id);
+      setAppStatus(status);
+    } catch (err) {
+      if (err instanceof EngineError && err.status === 409) {
+        // G-323: the matrix refused — the honest terminal copy; the
+        // state refreshes instead of a stale withdraw button.
+        try {
+          const status = await getLearnerApplicationStatus(appStatus.application.id);
+          setAppStatus(status);
+        } catch {
+          /* the current render stays — the 409 copy below is honest */
+        }
+        setWithdrawError('This application is terminal — it can no longer be withdrawn.');
+      } else if (err instanceof EngineError && err.status === 403) {
+        setWithdrawError('This application belongs to another learner.');
+      } else {
+        setWithdrawError(err instanceof Error ? err.message : 'Withdraw failed.');
+      }
+    } finally {
+      setWithdrawing(false);
+    }
+  }
+
   if (missing) {
     notFound();
   }
@@ -242,8 +312,86 @@ export function JobDetailClient() {
               </div>
             </div>
             <div className="flex flex-col items-start gap-3 md:items-end">
-              {/* Apply flow (D-058): every state renders honestly. */}
-              {confirmation ? (
+              {/* Apply flow (D-058): every state renders honestly. P5
+               * (G-322/D-104): the status panel renders when the
+               * mine-read finds the application; the apply CTA only
+               * when it does not. */}
+              {appStatus ? (
+                <div
+                  role="status"
+                  className="flex w-full flex-col gap-3 rounded-lg border border-slate-300 bg-slate-50 px-4 py-3 text-sm dark:border-slate-700 dark:bg-slate-900/40"
+                >
+                  <div className="flex items-center gap-2">
+                    <span className="text-xs font-semibold uppercase tracking-wide text-slate-500 dark:text-slate-400">
+                      Your application
+                    </span>
+                    <Badge
+                      variant={appStatus.application.status === 'hired' ? 'success' : 'default'}
+                    >
+                      {applicationStatusLabel(appStatus.application.status)}
+                    </Badge>
+                  </div>
+                  <span className="text-xs text-slate-500 dark:text-slate-400">
+                    {appStatus.application.created_at
+                      ? `Applied ${relativeTime(appStatus.application.created_at)} · `
+                      : ''}
+                    application {appStatus.application.id}
+                  </span>
+                  {appStatus.events.length > 0 ? (
+                    <ul className="flex flex-col gap-1.5">
+                      {appStatus.events.map((event) => (
+                        <li
+                          key={event.id}
+                          className="flex items-center justify-between gap-2 text-xs"
+                        >
+                          <span className="font-medium text-slate-700 dark:text-slate-300">
+                            {applicationEventLabel(event.event_type)}
+                          </span>
+                          <span className="text-slate-500 dark:text-slate-400">
+                            {relativeTime(event.created_at)}
+                          </span>
+                        </li>
+                      ))}
+                    </ul>
+                  ) : (
+                    <span className="text-xs text-slate-500 dark:text-slate-400">
+                      No status updates yet.
+                    </span>
+                  )}
+                  {appStatus.placement && (
+                    <div
+                      role="status"
+                      className="flex flex-col gap-1 rounded-lg border border-emerald-300 bg-emerald-50 px-3 py-2 text-sm text-emerald-800 dark:border-emerald-800 dark:bg-emerald-900/30 dark:text-emerald-200"
+                    >
+                      <span className="font-semibold">Placement recorded</span>
+                      <span className="text-xs">
+                        {appStatus.placement.role_title} at {employerName} · starts{' '}
+                        {appStatus.placement.start_date}
+                      </span>
+                    </div>
+                  )}
+                  {WITHDRAWABLE_STATUSES.has(appStatus.application.status) ? (
+                    <Button
+                      size="sm"
+                      variant="outline"
+                      type="button"
+                      loading={withdrawing}
+                      onClick={() => void onWithdraw()}
+                    >
+                      Withdraw application
+                    </Button>
+                  ) : (
+                    <p className="text-xs text-slate-500 dark:text-slate-400">
+                      {terminalCopy(appStatus.application.status)}
+                    </p>
+                  )}
+                  {withdrawError && (
+                    <p role="alert" className="text-xs text-red-600 dark:text-red-400">
+                      {withdrawError}
+                    </p>
+                  )}
+                </div>
+              ) : confirmation ? (
                 <div
                   role="status"
                   className="flex flex-col gap-1 rounded-lg border border-emerald-300 bg-emerald-50 px-4 py-3 text-sm text-emerald-800 dark:border-emerald-800 dark:bg-emerald-900/30 dark:text-emerald-200"
@@ -457,3 +605,78 @@ export function JobDetailClient() {
 function matchPercent(score: number): number {
   return Math.max(0, Math.round(score * 100));
 }
+
+
+/** The seven D-099 states, honestly labeled (no stage invented beyond
+ * the matrix; unknown statuses render verbatim, never invented). */
+function applicationStatusLabel(status: ApplicationStatus): string {
+  switch (status) {
+    case 'submitted':
+      return 'Submitted';
+    case 'in_review':
+      return 'In review';
+    case 'interview':
+      return 'Interview';
+    case 'offer':
+      return 'Offer';
+    case 'hired':
+      return 'Hired';
+    case 'rejected':
+      return 'Rejected';
+    case 'withdrawn':
+      return 'Withdrawn';
+    default:
+      return status;
+  }
+}
+
+/** Ledger event labels (the D-101 vocabulary) — unknown event names
+ * render verbatim, never invented. */
+function applicationEventLabel(eventType: string): string {
+  switch (eventType) {
+    case 'application.in_review':
+      return 'Moved to review';
+    case 'application.interview':
+      return 'Interview stage';
+    case 'application.offer':
+      return 'Offer received';
+    case 'application.hired':
+      return 'Hired';
+    case 'application.rejected':
+      return 'Rejected';
+    case 'application.withdrawn':
+      return 'Withdrawn';
+    case 'placement.created':
+      return 'Placement recorded';
+    case 'placement.revoked':
+      return 'Placement revoked (operator correction)';
+    case 'placement.rehired':
+      return 'Placement re-recorded (operator correction)';
+    default:
+      return eventType;
+  }
+}
+
+/** The learner's legal withdraw sources (D-099: terminals have no
+ * outgoing edges). */
+const WITHDRAWABLE_STATUSES: ReadonlySet<ApplicationStatus> = new Set([
+  'submitted',
+  'in_review',
+  'interview',
+  'offer',
+]);
+
+/** Terminal copy (the honest end states — no resurrection, no
+ * fabricated next step). */
+function terminalCopy(status: ApplicationStatus): string {
+  switch (status) {
+    case 'hired':
+      return 'Hired — placement details appear above when a placement is recorded.';
+    case 'rejected':
+      return 'This application was not taken forward.';
+    case 'withdrawn':
+      return 'You withdrew this application.';
+    default:
+      return '';
+  }
+}

apps/web/lib/engine-client.ts

@@ -47,6 +47,13 @@ import type {
   AdminClaimsResponse,
   ClaimDecisionResponse,
   AdminAuditResponse,
+  EmployerApplicationsResponse,
+  ApplicationTransitionResponse,
+  HireTransitionRequest,
+  EmployerPlacementsResponse,
+  LearnerApplicationStatus,
+  MineApplication,
+  PlacementOverview,
 } from '@nextcraft/types';
 
 import { engineBaseUrl } from './engine-base-url';
@@ -1171,3 +1178,205 @@ export async function completeOwnEmployerMockCheckout(
     },
   );
 }
+
+// -- placements (v0.11 P3, REQ-11-002/003, D-110) ----------------------------------
+
+/** GET /v1/employers/applications — the session employer's OWN hiring
+ * pipeline (every status, per-status facets). Expired session →
+ * SessionRequiredError; unclaimed → ClaimRequiredError (the G-311
+ * gates surface as the honest state classes, never a re-fetch). */
+export async function listOwnEmployerApplications(
+  signal?: AbortSignal,
+): Promise<EmployerApplicationsResponse> {
+  return jsonFetch<EmployerApplicationsResponse>('/v1/employers/applications', {
+    headers: employerHeaders(),
+    signal,
+  });
+}
+
+/** The shared per-target transition transport (D-105: the matrix stays
+ * OUT of the request bodies — each call names its target). 401 →
+ * SessionRequiredError; 403-claim → ClaimRequiredError; 403
+ * cross-entity + 409 matrix → EngineError with the honest status
+ * (the surfaces render the state from err.status — NO new error
+ * classes, D-110). */
+async function employerTransition(
+  applicationId: string,
+  target: 'in-review' | 'interview' | 'offer' | 'reject' | 'hire',
+  body?: HireTransitionRequest,
+  signal?: AbortSignal,
+): Promise<ApplicationTransitionResponse> {
+  return jsonFetch<ApplicationTransitionResponse>(
+    `/v1/employers/applications/${encodeURIComponent(applicationId)}/${target}`,
+    {
+      method: 'POST',
+      headers: employerHeaders(),
+      body: body === undefined ? undefined : JSON.stringify(body),
+      signal,
+    },
+  );
+}
+
+/** POST .../in-review — submitted → in_review. */
+export function employerMarkInReview(
+  applicationId: string,
+  signal?: AbortSignal,
+): Promise<ApplicationTransitionResponse> {
+  return employerTransition(applicationId, 'in-review', undefined, signal);
+}
+
+/** POST .../interview. */
+export function employerMarkInterview(
+  applicationId: string,
+  signal?: AbortSignal,
+): Promise<ApplicationTransitionResponse> {
+  return employerTransition(applicationId, 'interview', undefined, signal);
+}
+
+/** POST .../offer. */
+export function employerMarkOffer(
+  applicationId: string,
+  signal?: AbortSignal,
+): Promise<ApplicationTransitionResponse> {
+  return employerTransition(applicationId, 'offer', undefined, signal);
+}
+
+/** POST .../reject — terminal. */
+export function employerRejectApplication(
+  applicationId: string,
+  signal?: AbortSignal,
+): Promise<ApplicationTransitionResponse> {
+  return employerTransition(applicationId, 'reject', undefined, signal);
+}
+
+/** POST .../hire — terminal; carries the employer-attested
+ * {role_title, start_date} (D-103/G-324). The response carries the
+ * created placement record. */
+export function employerHireApplication(
+  applicationId: string,
+  body: HireTransitionRequest,
+  signal?: AbortSignal,
+): Promise<ApplicationTransitionResponse> {
+  return employerTransition(applicationId, 'hire', body, signal);
+}
+
+/** GET /v1/employers/placements — the claimed entity's OWN placements
+ * (active + revoked, the full history; the overview's placements
+ * section data source, D-109 surface 2). */
+export async function listOwnEmployerPlacements(
+  signal?: AbortSignal,
+): Promise<EmployerPlacementsResponse> {
+  return jsonFetch<EmployerPlacementsResponse>('/v1/employers/placements', {
+    headers: employerHeaders(),
+    signal,
+  });
+}
+
+// -- learner placement status (v0.11 P5, REQ-11-005, D-104/G-322) -------------------
+
+/** GET /v1/marketplace/applications/mine?posting_id=&learner_id= —
+ * G-322 (binding) discovery: the status panel finds the application by
+ * the (posting, learner) pair — NEVER a client-persisted
+ * application_id. 404 = no application yet (the surface renders the
+ * apply CTA — honest absence). */
+export async function getMyApplication(
+  postingId: string,
+  learnerId: string = MOCK_LEARNER_ID,
+  signal?: AbortSignal,
+): Promise<MineApplication> {
+  return jsonFetch<MineApplication>(
+    `/v1/marketplace/applications/mine?posting_id=${encodeURIComponent(postingId)}&learner_id=${encodeURIComponent(learnerId)}`,
+    { signal },
+  );
+}
+
+/** GET /v1/marketplace/applications/{application_id}?learner_id= —
+ * D-104: the learner's-own outcome read — current status + the full
+ * id-ordered timestamped history + the placement record when hired
+ * (one read, one truth source). 403 foreign → EngineError (the
+ * surface renders the honest "not your application" state from
+ * err.status — NO new error classes, D-110). */
+export async function getLearnerApplicationStatus(
+  applicationId: string,
+  learnerId: string = MOCK_LEARNER_ID,
+  signal?: AbortSignal,
+): Promise<LearnerApplicationStatus> {
+  return jsonFetch<LearnerApplicationStatus>(
+    `/v1/marketplace/applications/${encodeURIComponent(applicationId)}?learner_id=${encodeURIComponent(learnerId)}`,
+    { signal },
+  );
+}
+
+/** POST /v1/marketplace/applications/{application_id}/withdraw — the
+ * learner's ONLY edit (D-099/D-104); terminal → 409 (the matrix
+ * surfaces as EngineError.status — the panel renders the honest
+ * terminal state, never a re-fetch). */
+export async function withdrawApplication(
+  applicationId: string,
+  learnerId: string = MOCK_LEARNER_ID,
+  signal?: AbortSignal,
+): Promise<ApplicationConfirmation> {
+  return jsonFetch<ApplicationConfirmation>(
+    `/v1/marketplace/applications/${encodeURIComponent(applicationId)}/withdraw`,
+    {
+      method: 'POST',
+      body: JSON.stringify({ learner_id: learnerId }),
+      signal,
+    },
+  );
+}
+
+// -- admin placements (v0.11 P3/P4, REQ-11-003/004, D-107/D-108) --------------------
+
+/** GET /v1/placements/admin/overview — the D-107 computation over the
+ * G-308 admin transport: distinct learners toward the 1,000 guiding
+ * goal, active placements, revoked count, per-employer + per-cohort
+ * month breakdowns. G-328: the caller labels these as RECORDED
+ * placements — never a verification claim. */
+export async function getPlacementOverview(
+  signal?: AbortSignal,
+): Promise<PlacementOverview> {
+  return adminJsonFetch<PlacementOverview>('/v1/placements/admin/overview', {
+    signal,
+  });
+}
+
+/** GET /v1/placements/admin/export — the self-contained audit JSON
+ * (D-108: cohort + evidence bundles + methodology + the ledger with
+ * head_hash). The caller downloads the document as a JSON blob. */
+export async function getPlacementExport(signal?: AbortSignal): Promise<string> {
+  const token = adminToken();
+  const resp = await fetch(
+    `${AI_SERVICE_URL}/v1/placements/admin/export`,
+    {
+      headers: token ? { 'X-Admin-Token': token } : {},
+      signal,
+    },
+  );
+  if (!resp.ok) {
+    const err = await parseError(resp);
+    throw err;
+  }
+  return resp.text();
+}
+
+/** GET /v1/placements/admin/export/summary — the human-readable
+ * markdown rendering FROM the same document (D-108's anti-drift
+ * rule); opens in-tab. */
+export async function getPlacementExportSummary(
+  signal?: AbortSignal,
+): Promise<string> {
+  const token = adminToken();
+  const resp = await fetch(
+    `${AI_SERVICE_URL}/v1/placements/admin/export/summary`,
+    {
+      headers: token ? { 'X-Admin-Token': token } : {},
+      signal,
+    },
+  );
+  if (!resp.ok) {
+    const err = await parseError(resp);
+    throw err;
+  }
+  return resp.text();
+}

apps/web/tests/employer-dashboard.test.ts

@@ -65,8 +65,10 @@ test("pin: talent pages keep their mock imports + the mock-labeled metrics stay
   assert.ok(/import \{ candidates \} from '@nextcraft\/mock-data'/.test(talent), "talent search keeps the candidates mock");
   assert.ok(/import \{ candidates, competencyStacks \} from '@nextcraft\/mock-data'/.test(talentDetail), "candidate profile keeps the candidates mock");
 
-  // The overview's talent-match/placement metrics stay MOCK-LABELED —
-  // the honest label rides the card copy (never presented as real).
+  // The overview's talent-match metrics stay MOCK-LABELED — the
+  // honest label rides the card copy (never presented as real).
+  // v0.11 P3: placement counts are now REAL (the D-092 conversion —
+  // the convertible surface left mock); only talent-match stays mock.
   const overviewClient = readFileSync(
     web("components/employer/employer-overview-client.tsx"),
     "utf8",
@@ -77,10 +79,14 @@ test("pin: talent pages keep their mock imports + the mock-labeled metrics stay
   assert.ok(/no backend\s+computes them yet/.test(overviewClient), "analytics notice is honest about the mock");
 
   // The REAL arms: active-postings + applicant counts from the real
-  // route; the claimed-entity profile via the public marketplace fetch.
+  // route; the claimed-entity profile via the public marketplace fetch;
+  // v0.11: the placements section is REAL (listOwnEmployerPlacements).
   assert.ok(/listOwnEmployerPostings/.test(overviewClient), "overview fetches own postings");
   assert.ok(/applicant_count/.test(overviewClient), "overview renders per-posting applicant counts");
   assert.ok(/getEmployer\(/.test(overviewClient), "overview fetches the claimed-entity profile (public route)");
+  assert.ok(/listOwnEmployerPlacements/.test(overviewClient), "overview fetches REAL placements (v0.11)");
+  assert.ok(/Placements Recorded/.test(overviewClient), "the real placement metric renders");
+  assert.ok(!/MockMetricCard label="Placement Rate"/.test(overviewClient), "the placement mock card is GONE (converted)");
 });
 
 test("pin: the session-gated clients carry every honest-state branch (MH-3b, G-312 source pins)", async () => {

apps/web/tests/learner-placement-status.test.ts

@@ -0,0 +1,232 @@
+import { test } from "node:test";
+import assert from "node:assert/strict";
+import { readFileSync } from "node:fs";
+import { fileURLToPath } from "node:url";
+
+/**
+ * v0.11 P5 (REQ-11-005, D-104/G-322): the learner placement-status
+ * client + panel wiring. Fetch stubs pin the wire shapes + the query
+ * composition (the billing-entitlement template); source pins cover
+ * the panel's mine-read-first composition, the honest state arms, and
+ * the A-304 badge honesty (the G-312 discipline — no render harness
+ * in-tree, none may be added).
+ */
+
+const QS = `?t=${Date.now()}-${Math.random()}`;
+
+const root = new URL("..", import.meta.url);
+
+function web(path: string): string {
+  return fileURLToPath(new URL(path, root));
+}
+
+const STATUS_PAYLOAD = {
+  application: {
+    id: "app-1",
+    posting_id: "post-1",
+    learner_id: "pilot-learner",
+    status: "in_review",
+    created_at: "2026-10-21T00:00:00Z",
+  },
+  events: [
+    {
+      id: 1,
+      application_id: "app-1",
+      placement_id: null,
+      event_type: "application.in_review",
+      actor_type: "employer",
+      actor_ref: "employer:emp-test",
+      payload: {},
+      prev_hash: "0".repeat(64),
+      hash: "a".repeat(64),
+      created_at: "2026-10-21T00:01:00Z",
+    },
+  ],
+  placement: null,
+};
+
+interface Call {
+  url: string;
+  method?: string;
+  body?: unknown;
+  headers: Record<string, string>;
+}
+
+function stubFetch(handler: () => Response): { calls: Call[]; restore: () => void } {
+  const realFetch = globalThis.fetch;
+  const calls: Call[] = [];
+  globalThis.fetch = (async (input: unknown, init?: RequestInit) => {
+    calls.push({
+      url: String(input),
+      method: init?.method,
+      body: init?.body ? JSON.parse(String(init.body)) : undefined,
+      headers: (init?.headers ?? {}) as Record<string, string>,
+    });
+    return handler();
+  }) as typeof fetch;
+  return { calls, restore: () => { globalThis.fetch = realFetch; } };
+}
+
+const ok = (payload: unknown) =>
+  new Response(JSON.stringify(payload), {
+    status: 200,
+    headers: { "Content-Type": "application/json" },
+  });
+
+test("getMyApplication: GETs the mine route with the (posting, learner) pair — G-322", async () => {
+  const { calls, restore } = stubFetch(() =>
+    ok({ application_id: "app-1", status: "submitted" }),
+  );
+  try {
+    const { getMyApplication } = await import(`../lib/engine-client.ts${QS}`);
+    const mine = await getMyApplication("post-1", "pilot-learner");
+    assert.equal(mine.application_id, "app-1");
+    assert.equal(mine.status, "submitted");
+    const url = new URL(calls[0].url, "http://localhost");
+    assert.equal(url.pathname, "/v1/marketplace/applications/mine");
+    assert.equal(url.searchParams.get("posting_id"), "post-1");
+    assert.equal(url.searchParams.get("learner_id"), "pilot-learner");
+    assert.equal(calls[0].method, undefined, "the discovery read is a GET");
+  } finally {
+    restore();
+  }
+});
+
+test("getMyApplication: no application → EngineError 404 (the apply-CTA arm)", async () => {
+  const { restore } = stubFetch(
+    () => new Response(JSON.stringify({ detail: "none" }), { status: 404 }),
+  );
+  try {
+    const { getMyApplication, EngineError } = await import(`../lib/engine-client.ts${QS}`);
+    await assert.rejects(getMyApplication("post-1", "pilot-learner"), (err: unknown) => {
+      assert.ok(err instanceof EngineError, "must be EngineError");
+      const e = err as InstanceType<typeof EngineError>;
+      return e.status === 404;
+    });
+  } finally {
+    restore();
+  }
+});
+
+test("getLearnerApplicationStatus: GETs the status read with the learner query", async () => {
+  const { calls, restore } = stubFetch(() => ok(STATUS_PAYLOAD));
+  try {
+    const { getLearnerApplicationStatus } = await import(`../lib/engine-client.ts${QS}`);
+    const status = await getLearnerApplicationStatus("app-1", "pilot-learner");
+    assert.equal(status.application.status, "in_review");
+    assert.equal(status.events.length, 1);
+    assert.equal(status.events[0].event_type, "application.in_review");
+    assert.equal(status.placement, null);
+    const url = new URL(calls[0].url, "http://localhost");
+    assert.equal(url.pathname, "/v1/marketplace/applications/app-1");
+    assert.equal(url.searchParams.get("learner_id"), "pilot-learner");
+  } finally {
+    restore();
+  }
+});
+
+test("withdrawApplication: POSTs the withdraw body — the learner's only edit (D-104)", async () => {
+  const { calls, restore } = stubFetch(() =>
+    ok({ application_id: "app-1", posting_id: "post-1", status: "withdrawn" }),
+  );
+  try {
+    const { withdrawApplication } = await import(`../lib/engine-client.ts${QS}`);
+    const confirmation = await withdrawApplication("app-1", "pilot-learner");
+    assert.equal(confirmation.status, "withdrawn");
+    const url = new URL(calls[0].url, "http://localhost");
+    assert.equal(url.pathname, "/v1/marketplace/applications/app-1/withdraw");
+    assert.equal(calls[0].method, "POST");
+    assert.deepEqual(calls[0].body, { learner_id: "pilot-learner" });
+  } finally {
+    restore();
+  }
+});
+
+test("withdrawApplication: terminal → EngineError 409 (the honest matrix refusal)", async () => {
+  const { restore } = stubFetch(
+    () => new Response(JSON.stringify({ detail: "matrix" }), { status: 409 }),
+  );
+  try {
+    const { withdrawApplication, EngineError } = await import(`../lib/engine-client.ts${QS}`);
+    await assert.rejects(withdrawApplication("app-1", "pilot-learner"), (err: unknown) => {
+      assert.ok(err instanceof EngineError, "must be EngineError");
+      const e = err as InstanceType<typeof EngineError>;
+      return e.status === 409;
+    });
+  } finally {
+    restore();
+  }
+});
+
+test("getLearnerApplicationStatus: foreign → EngineError 403 (the not-your-application arm)", async () => {
+  const { restore } = stubFetch(
+    () => new Response(JSON.stringify({ detail: "foreign" }), { status: 403 }),
+  );
+  try {
+    const { getLearnerApplicationStatus, EngineError } = await import(`../lib/engine-client.ts${QS}`);
+    await assert.rejects(getLearnerApplicationStatus("app-1", "pilot-learner"), (err: unknown) => {
+      assert.ok(err instanceof EngineError, "must be EngineError");
+      const e = err as InstanceType<typeof EngineError>;
+      return e.status === 403;
+    });
+  } finally {
+    restore();
+  }
+});
+
+test("pin: the panel composes mine-read first — never client-persisted application ids (G-322)", async () => {
+  const src = readFileSync(web("components/marketplace/job-detail-client.tsx"), "utf8");
+  assert.ok(/getMyApplication\(/.test(src), "the mine-read drives discovery");
+  assert.ok(/getLearnerApplicationStatus\(/.test(src), "the status read drives the panel");
+  assert.ok(/withdrawApplication\(/.test(src), "the withdraw CTA dispatches through the client");
+  assert.ok(
+    !/localStorage\.setItem|sessionStorage\.setItem/.test(src),
+    "no client-persisted application ids (no setItem anywhere)",
+  );
+  // mine 404 → the apply CTA (the honest absence arm)
+  assert.ok(
+    /mineErr instanceof EngineError && mineErr\.status === 404/.test(src),
+    "the 404 arm falls through to the apply CTA",
+  );
+});
+
+test("pin: the seven D-099 states render honestly (labels + withdraw gate + terminal/403 copy)", async () => {
+  const src = readFileSync(web("components/marketplace/job-detail-client.tsx"), "utf8");
+  for (const state of [
+    "'submitted'",
+    "'in_review'",
+    "'interview'",
+    "'offer'",
+    "'hired'",
+    "'rejected'",
+    "'withdrawn'",
+  ]) {
+    assert.ok(src.includes(state), `the ${state} arm renders a label`);
+  }
+  assert.ok(
+    /WITHDRAWABLE_STATUSES/.test(src),
+    "the withdraw CTA gates on non-terminal sources (D-099)",
+  );
+  assert.ok(/status === 409/.test(src), "the 409 arm renders the honest terminal copy");
+  assert.ok(
+    /This application belongs to another learner\./.test(src),
+    "the foreign-403 copy renders",
+  );
+});
+
+test("pin: history rows + the placement-confirmation render from the status payload", async () => {
+  const src = readFileSync(web("components/marketplace/job-detail-client.tsx"), "utf8");
+  assert.ok(/appStatus\.events\.map\(/.test(src), "history rows render from events[]");
+  assert.ok(
+    /appStatus\.placement &&/.test(src),
+    "the placement confirmation renders when hired",
+  );
+  assert.ok(
+    /role_title/.test(src) && /start_date/.test(src),
+    "the placement payload fields render",
+  );
+  assert.ok(
+    /Placement recorded/.test(src),
+    "the placement copy says RECORDED (G-328 — never a verification claim)",
+  );
+});

apps/web/tests/pins.test.ts

@@ -774,3 +774,171 @@ test("pricing pin: purchasable CTAs route to /employer/login; the enterprise Con
   );
   assert.ok(/mock provider \(honestly labeled/.test(client), "the pilot mock path is labeled");
 });
+
+// v0.11 P3 (D-110): the placement wire pins — placement.ts mirrors
+// placements/base.py field-for-field (the G-108 discipline; the
+// employer.ts block's template). Every change happens in both places.
+
+test("wire pin: Placement mirrors placements/base.py PlacementRead field-for-field (dual-schema sync)", async () => {
+  const typesSrc = readFileSync(web("../../packages/types/placement.ts"), "utf8");
+  const pySrc = readFileSync(
+    web("../../apps/ai-service/ai_service/placements/base.py"),
+    "utf8",
+  );
+  const block = typesSrc.slice(
+    typesSrc.indexOf("export interface Placement {"),
+    typesSrc.indexOf("export interface PlacementEvent"),
+  );
+  const fields = [
+    "id:", "learner_id:", "employer_id:", "posting_id:",
+    "application_id:", "role_title:", "start_date:", "status:",
+    "created_at:", "decided_at:",
+  ];
+  for (const f of fields) {
+    assert.ok(block.includes(f), `Placement missing base.py field ${f}`);
+  }
+  // start_date is a DATE on both sides (D-103) — never a datetime
+  assert.ok(
+    /start_date: date/.test(pySrc),
+    "base.py start_date is a pydantic date",
+  );
+  assert.ok(
+    /start_date: string;/.test(block),
+    "placement.ts start_date is the ISO date string",
+  );
+});
+
+test("wire pin: ApplicationStatus union mirrors the D-099 matrix (status-union regex pin)", async () => {
+  const typesSrc = readFileSync(web("../../packages/types/placement.ts"), "utf8");
+  const block = typesSrc.slice(
+    typesSrc.indexOf("export type ApplicationStatus"),
+    typesSrc.indexOf("export type PlacementStatus"),
+  );
+  // the seven D-099 statuses, in matrix order
+  const statuses = [
+    "'submitted'", "'in_review'", "'interview'", "'offer'",
+    "'hired'", "'rejected'", "'withdrawn'",
+  ];
+  for (const status of statuses) {
+    assert.ok(block.includes(status), `ApplicationStatus missing ${status}`);
+  }
+  assert.ok(
+    !/"submitted"/.test(block),
+    "snake_case on the wire (no kebab 'in-review')",
+  );
+});
+
+test("wire pin: PlacementOverview mirrors the D-107 computation shape", async () => {
+  const typesSrc = readFileSync(web("../../packages/types/placement.ts"), "utf8");
+  const block = typesSrc.slice(
+    typesSrc.indexOf("export interface PlacementOverview"),
+  );
+  const fields = [
+    "total_active_placements:", "distinct_learners_placed:",
+    "guiding_goal:", "by_employer:", "by_cohort_month:",
+  ];
+  for (const f of fields) {
+    assert.ok(block.includes(f), `PlacementOverview missing ${f}`);
+  }
+  assert.ok(
+    /export const GUIDING_GOAL = 1000;/.test(typesSrc),
+    "the north star is 1,000 learners",
+  );
+});
+
+test("wire pin: EmployerApplicationSummary carries learner_id per the G-319 supersession (D-105)", async () => {
+  const typesSrc = readFileSync(web("../../packages/types/placement.ts"), "utf8");
+  const block = typesSrc.slice(
+    typesSrc.indexOf("export interface EmployerApplicationSummary"),
+    typesSrc.indexOf("export interface EmployerApplicationsResponse"),
+  );
+  assert.ok(/learner_id: string;/.test(block), "learner_id rides the summary");
+  // the own-postings LIST stays counts-only: OwnPostingSummary (the
+  // v0.10 contract) still carries ONLY applicant_count — never a
+  // learner_id field
+  const employerTypes = readFileSync(web("../../packages/types/employer.ts"), "utf8");
+  const ownBlock = employerTypes.slice(
+    employerTypes.indexOf("export interface OwnPostingSummary"),
+    employerTypes.indexOf("export interface OwnPostingsFacets"),
+  );
+  assert.ok(
+    !/learner_id/.test(ownBlock),
+    "the G-319 pin split: OwnPostingSummary stays counts-only",
+  );
+});
+
+// v0.11 P5 (REQ-11-005, D-110): the learner status-read wire pins +
+// the A-304 badge-honesty census — no placement badge on the mock
+// talent surfaces (D-092 binding: a badge on a mock page is
+// fabricated placement); the learner's-own application surface is the
+// ONLY placement render.
+
+test("wire pin: LearnerApplicationStatus mirrors the base.py learner status read (D-104)", async () => {
+  const typesSrc = readFileSync(web("../../packages/types/placement.ts"), "utf8");
+  const pySrc = readFileSync(
+    web("../../apps/ai-service/ai_service/placements/base.py"),
+    "utf8",
+  );
+  const summaryBlock = typesSrc.slice(
+    typesSrc.indexOf("export interface LearnerApplicationSummary"),
+    typesSrc.indexOf("export interface LearnerApplicationStatus"),
+  );
+  for (const f of ["id:", "posting_id:", "learner_id:", "status:", "created_at:"]) {
+    assert.ok(summaryBlock.includes(f), `LearnerApplicationSummary missing ${f}`);
+  }
+  const statusBlock = typesSrc.slice(
+    typesSrc.indexOf("export interface LearnerApplicationStatus"),
+  );
+  assert.ok(/application: LearnerApplicationSummary;/.test(statusBlock));
+  assert.ok(/events: PlacementEvent\[\];/.test(statusBlock));
+  assert.ok(/placement: Placement \| null;/.test(statusBlock));
+  // the backend contract carries the same three arms (base.py)
+  const pyBlock = pySrc.slice(pySrc.indexOf("class LearnerApplicationStatusResponse"));
+  assert.ok(/application: LearnerApplicationSummary/.test(pyBlock));
+  assert.ok(/events: list\[PlacementEventRead\]/.test(pyBlock));
+  assert.ok(/placement: PlacementRead \| None/.test(pyBlock));
+  // the mine-read contract (G-322)
+  const mineBlock = typesSrc.slice(typesSrc.indexOf("export interface MineApplication"));
+  assert.ok(/application_id: string;/.test(mineBlock));
+  assert.ok(/status: ApplicationStatus;/.test(mineBlock));
+  assert.ok(
+    /class MineApplicationResponse/.test(pySrc),
+    "base.py carries the mine contract",
+  );
+});
+
+test("pin: A-304 badge honesty — no placement badge on the mock talent surfaces (D-092/D-109)", async () => {
+  const surfaces = [
+    "app/(employer)/employer/talent/page.tsx",
+    "app/(employer)/employer/talent/[candidateId]/page.tsx",
+    "components/employer/talent-search.tsx",
+  ];
+  for (const surface of surfaces) {
+    const src = readFileSync(web(surface), "utf8");
+    assert.ok(
+      !/placement/i.test(src),
+      `${surface}: a badge on a mock surface is fabricated placement (D-092 binding)`,
+    );
+  }
+  // the learner's-own application surface is the ONLY placement render
+  const jobDetail = readFileSync(
+    web("components/marketplace/job-detail-client.tsx"),
+    "utf8",
+  );
+  assert.ok(
+    /appStatus\.placement &&/.test(jobDetail),
+    "the placement confirmation renders only on the learner's-own application surface",
+  );
+  const placementBlock = jobDetail.slice(
+    jobDetail.indexOf("appStatus.placement &&"),
+    jobDetail.indexOf("{WITHDRAWABLE_STATUSES.has("),
+  );
+  assert.ok(
+    /Placement recorded/.test(placementBlock),
+    "G-328: the placement copy says RECORDED",
+  );
+  assert.ok(
+    !/verified/i.test(placementBlock),
+    "G-328: no verification claim on the placement surface",
+  );
+});

packages/types/index.ts

@@ -4,6 +4,7 @@ export * from './employer';
 export * from './defense';
 export * from './grading';
 export * from './marketplace';
+export * from './placement';
 export * from './telemetry';
 export * from './user';
 export * from './ui';

packages/types/placement.ts

@@ -0,0 +1,167 @@
+/**
+ * Nextcraft — Placement Types
+ *
+ * Placement-tracking wire shapes (v0.11, REQ-11-001..005): the
+ * hiring-pipeline surface served by /v1/employers/applications/*,
+ * /v1/marketplace/applications/*, and /v1/placements/admin/*.
+ *
+ * Dual-schema-sync mirror of
+ * `apps/ai-service/ai_service/placements/base.py` (the G-108
+ * discipline, D-110): field-for-field parity, snake_case as emitted
+ * by the API — every change happens in both places, pinned by
+ * `apps/web/tests/pins.test.ts`.
+ *
+ * D-099: the application status set is forward-only with
+ * skip-forward; hired/rejected/withdrawn are TERMINAL.
+ *
+ * G-319 supersession (D-105): learner_id IS visible on
+ * application-scoped reads for the session's own claimed-entity
+ * postings — the own-postings LIST stays counts-only.
+ */
+
+/** D-099: the hiring lifecycle (snake_case, the billing `past_due`
+ * precedent). hired/rejected/withdrawn are terminal — no outgoing
+ * edges. */
+export type ApplicationStatus =
+  | 'submitted'
+  | 'in_review'
+  | 'interview'
+  | 'offer'
+  | 'hired'
+  | 'rejected'
+  | 'withdrawn';
+
+/** D-102: the placement lifecycle — created active; the ONLY
+ * transition is the operator correction active → revoked. */
+export type PlacementStatus = 'active' | 'revoked';
+
+/** A placement record (base.py PlacementRead). employer/learner/
+ * posting are ID REFERENCES resolved from source rows at read/export
+ * (G-302) — never trusted denormalized copies. start_date is the
+ * employer-attested employment start DATE (D-103), never a
+ * datetime. */
+export interface Placement {
+  id: string;
+  learner_id: string;
+  employer_id: string;
+  posting_id: string;
+  application_id: string;
+  role_title: string;
+  start_date: string;
+  status: PlacementStatus;
+  created_at: string;
+  decided_at: string;
+}
+
+/** One ledger event (base.py PlacementEventRead): the append-only
+ * hash-chained trail — application-stage events carry
+ * application_id (placement_id null); the placement lane carries
+ * placement_id set. */
+export interface PlacementEvent {
+  id: number;
+  application_id: string | null;
+  placement_id: string | null;
+  event_type: string;
+  actor_type: string;
+  actor_ref: string;
+  payload: Record<string, unknown>;
+  prev_hash: string;
+  hash: string;
+  created_at: string;
+}
+
+/** An employer-facing application row (base.py
+ * EmployerApplicationSummary, D-105/G-319): learner_id visible on
+ * application-scoped reads ONLY (the own-postings list stays
+ * counts-only — the pin split). */
+export interface EmployerApplicationSummary {
+  id: string;
+  posting_id: string;
+  learner_id: string;
+  status: ApplicationStatus;
+  created_at: string | null;
+}
+
+/** GET /v1/employers/applications response (base.py
+ * EmployerApplicationsResponse): own-pipeline applications (every
+ * status) + per-status facet counts (every status key ALWAYS
+ * present — a zero-count status carries its honest 0). */
+export interface EmployerApplicationsResponse {
+  applications: EmployerApplicationSummary[];
+  facets: Record<ApplicationStatus, number>;
+  total: number;
+}
+
+/** The transition result (base.py ApplicationTransitionResponse):
+ * the application's new status + the placement record when the
+ * transition created one (hire). */
+export interface ApplicationTransitionResponse {
+  application_id: string;
+  status: ApplicationStatus;
+  placement: Placement | null;
+}
+
+/** POST .../hire body (base.py HireTransitionRequest, D-103/G-324):
+ * role_title is employer-attested free text (1..200 — the house
+ * bounds); start_date is the employment start DATE (YYYY-MM-DD). */
+export interface HireTransitionRequest {
+  role_title: string;
+  start_date: string;
+}
+
+/** GET /v1/employers/placements response (base.py
+ * EmployerPlacementsResponse): the claimed entity's OWN placements
+ * (active + revoked — the full history), created_at then id. */
+export interface EmployerPlacementsResponse {
+  placements: Placement[];
+  total: number;
+}
+
+/** D-107: the guiding outcome's north star (PROJECT.md line 7 — the
+ * noun is LEARNERS, not placements). */
+export const GUIDING_GOAL = 1000;
+
+/** GET /v1/placements/admin/overview response (base.py
+ * PlacementOverview, D-107): counts computed from rows at query
+ * time — never denormalized counters. The guiding metric is
+ * DISTINCT learners with ≥1 active placement (a learner placed
+ * twice counts ONCE); revoked excluded from every count; cohort
+ * month = the calendar month of start_date (YYYY-MM). */
+export interface PlacementOverview {
+  total_active_placements: number;
+  distinct_learners_placed: number;
+  guiding_goal: number;
+  by_employer: Array<{ employer_id: string; count: number }>;
+  by_cohort_month: Array<{ month: string; count: number }>;
+}
+
+/** The application row on the learner status read (base.py
+ * LearnerApplicationSummary, D-104): the mine-visible fields only —
+ * ids + status + the apply timestamp (nullable per the v0.6 row). */
+export interface LearnerApplicationSummary {
+  id: string;
+  posting_id: string;
+  learner_id: string;
+  status: ApplicationStatus;
+  created_at: string | null;
+}
+
+/** GET /v1/marketplace/applications/{application_id}?learner_id=
+ * response (base.py LearnerApplicationStatusResponse, REQ-11-005):
+ * the learner's-own application read — current status + the full
+ * id-ordered event history for THIS application + the placement
+ * record when hired (the honest null otherwise, A-304). */
+export interface LearnerApplicationStatus {
+  application: LearnerApplicationSummary;
+  events: PlacementEvent[];
+  placement: Placement | null;
+}
+
+/** GET /v1/marketplace/applications/mine response (base.py
+ * MineApplicationResponse, G-322): the panel's application discovery
+ * on revisit — a 404 renders the apply CTA (the panel never depends
+ * on client-persisted application_ids). */
+export interface MineApplication {
+  application_id: string;
+  status: ApplicationStatus;
+}