ship: v0.2 P1 methodology framework + adapter layer (#10)

---ci---
phase: 0
milestone: v0.2
status: complete
message: >-
  Ship record: PR #9 squash-merged phase/00-pre-execution →
  milestone/v0.2-mvp (bbf80ce), tag v0.2.0, phase branch deleted
  (local+remote), Gitea release v0.2.0 created (HTTP 201). All P0
  stages complete: specify, clarify (D-007..D-020), research
  (RESEARCH-v02.md), plan (P1 slices), grill (G-001..G-010, Proceed
  0.72), mvp/ux check (PASS). ROADMAP P0 → complete, P1 → in
  progress. Next: P1 Methodology Framework + Adapter Layer (REQ-01..
  06, 08..11, 31) → v0.2.1.
requirements:
  covered: []
  partial: []
---/ci---

.ciagent/CHECKPOINT.json

@@ -0,0 +1,8 @@
+{
+  "phase": 1,
+  "stage": "execute",
+  "milestone": "v0.2",
+  "phase_role": "execution",
+  "attempts": 0,
+  "updated_at": "2026-09-27T11:05:00Z"
+}

.ciagent/GRILL.md

@@ -0,0 +1,218 @@
+# CIAgent Grill Report
+
+## Run: 2026-09-27 11:25 (mode: mechanical, focus: all)
+
+### Verdict: Proceed  (confidence: 0.72)
+
+The plan is sound with fixable gaps. The evidence base is unusually strong for a project at P0: a shipped and owner-approved v0.1 (9 tags, decision commit 3fd0e10), a locked two-milestone structure, a typed frontend boundary already in the tree (client.ts), a research file with concrete API shapes, and honest `---ci---` reporting throughout. But the grill found **two internal contradictions and one measurability hole** that would each have surfaced at P3 as rework: (1) PLAN.md P1 claims REQ-07/REQ-12 delivery while ROADMAP/REQUIREMENTS/PLAN's own frontmatter map them to P2; (2) the approved prototype's ApiClient documents seven v0.2 endpoint mappings (`GET /api/graph`, `GET /api/tasks`, `GET /api/library`, `GET /api/library/connections`, `GET /api/suggestions`, `POST /api/refine/*`, `PUT /api/config`) that REQ-25 does not include — a hidden-scope grenade wired to the P3 swap; (3) REQ-23's ≥99% liveness bar cannot be proven in the zero-key test suite it is scheduled into. All three are absorbed below as binding decisions. The MVP does not overreach as specced — REQ-01..34 is a genuine core loop — but the *implicit* live-mode expectation (whole prototype UI working against the backend) does overreach, and is explicitly reduced to the core research loop (G-002, escalated for owner ratification at the P5 gate).
+
+---
+
+### Axis 1 — Business Case
+- **Q1**: What problem does this actually solve, and is that problem still the top priority?
+  - Evidence: PROJECT.md Core Value + Key Decisions ("deep-research agents hallucinate URLs at the highest measured rates; verification cuts failures to <1% [E1]"); owner approved v0.1.8 and immediately unblocked v0.2 (commits 3fd0e10, 42435bc).
+  - Answer: Real, named problem — citation-untrustworthy deep-research agents — converted into a differentiated product thesis (methodology-first + trust loop). The owner's same-day unblocking of v0.2 shows it remains the top priority. Not a project that outlived its justification: the value is entirely unrealized until the MVP ships, which argues for proceeding, not stopping.
+  - Confidence: 0.80
+- **Q2**: Who is the named executive sponsor, and when did they last make a decision under pressure?
+  - Evidence: Owner decisions under pressure recorded twice in v0.1: P4 gate returned *feedback instead of approval* → binding P5/P6 extension (ROADMAP P4 note, commit 7db53d62); P6 gate returned *2nd feedback* → P7/P8 extension (commit 57c5231, ROADMAP P6 note); final approval 3fd0e10. D-018/D-019 record owner directives for this run.
+  - Answer: The sponsor is pressure-tested, not a rubber stamp — two rejections/extensions before approval. This is the strongest possible sponsor signal available in the record.
+  - Confidence: 0.85
+- **Q3**: What happens to the business if the project is cancelled?
+  - Evidence: v0.1 is mock-only by design (REQ-53: "no backend, no API keys"); zero research value has shipped; all value lands in v0.2 (REQ-01..34).
+  - Answer: Cancelling now strands 100% of sunk effort — the prototype is a shell without the MVP. The project is not a zombie; it is the opposite: a project whose entire value is still ahead of it, which raises the stakes of P2/P3 execution quality, not the case for stopping.
+  - Confidence: 0.75
+- **Q4**: Is the ROI calculated against a counterfactual?
+  - Evidence: MISSING — no ROI/counterfactual calculation exists anywhere in .ciagent/.
+  - Answer: No formal ROI. The implicit counterfactual is "ad-hoc LLM prompting with unverified citations," which is plausible but never quantified. For an owner-directed, single-user, local-first tool this is a tolerable omission — the sponsor is the beneficiary — but it means priority calls rest entirely on owner judgment, with no objective measure if enthusiasm fades.
+  - Confidence: 0.55
+  - Decision: G-007 — make the counterfactual *measurable in-product*: per-run request/token/cost counters in the run trace, surfaced via `GET /api/config` (advisory, no hard spend cap in MVP). This is the cheapest honest ROI instrumentation available.
+
+### Axis 2 — Scope and Requirements
+- **Q1**: Is the scope expanding, contracting, or genuinely stable?
+  - Evidence: REQ-01..34 locked with traceability (REQUIREMENTS.md table); D-007..D-020 clarify commit recorded (e79102b); v0.1 scope *grew twice* via owner gate feedback (P5/P7 extensions) — proof the gate can grow scope.
+  - Answer: The formal scope is stable and frozen. But the grill found the *informal* scope is ambiguous: the prototype's approved UI implies backend endpoints that REQ-25 does not promise (see Q4). That ambiguity will resolve itself at P3 — either as scope growth or as a visible degraded mode. It must be resolved now, in writing.
+  - Confidence: 0.60
+- **Q2**: Who owns the requirements, and have they been frozen?
+  - Evidence: Owner-approved milestone structure (PROJECT.md Constraints); REQUIREMENTS.md traceability with per-phase status; clarify decisions D-007..D-020 at confidence 0.75–1.0.
+  - Answer: Owner owns; the pipeline freezes and traces them. Requirements management is this project's strongest discipline.
+  - Confidence: 0.85
+- **Q3**: What is explicitly out of scope?
+  - Evidence: REQUIREMENTS.md "Out of Scope" table (paywalled sources, chatbot/hosting, auth/multi-tenancy, native Ollama adapter, rename, autonomous v1.0.0); PROJECT.md Out of Scope.
+  - Answer: Explicit, reasoned, and enforced (e.g., OpenAI-compatible-only is restated in constraints and architecture).
+  - Confidence: 0.90
+- **Q4**: Are there hidden requirements only disclosed late in delivery?
+  - Evidence: **FOUND — two.** (a) `frontend/src/lib/api/client.ts` lines 123–179 document v0.2 mappings to `GET /api/graph`, `GET /api/tasks`, `GET /api/library`, `GET /api/library/connections`, `GET /api/suggestions`, `POST /api/refine/questions`, `POST /api/refine/compose`, `PUT /api/config` — none of which appear in REQ-25 (runs, methodologies, lifecycle, SSE, config-read only) or any v0.2 phase mapping. (b) The same file exposes no `pauseRun`/`resumeRun` while REQ-25 mandates pause/resume in the API and REQ-15 mandates server-side pause/resume across restarts; line 69's comment claims "pause/resume stay client-side concerns," which contradicts the engine requirement.
+  - Answer: The P3 swap ("behind the unchanged ApiClient interface," REQ-26/REQ-54) is wired to detonate: either the backend grows 7+ undocumented endpoints (scope expansion inside the MVP milestone), or live mode silently breaks six approved UI surfaces, or the interface changes anyway (breaking REQ-54's zero-rewrite promise without a plan). This is the single largest finding of this grill.
+  - Confidence: 0.50
+  - Decision: G-002 — declare the v0.2 live-mode surface = **core research loop only** (Ask, Choose, Plan & Run, Reading Room + read-only `GET /api/config`); Library, Settings persistence, Suggestions, Refine, project graph, task inbox, and user profile stay mock-bound behind ApiClient in live mode, honestly marked in-UI, with their backends explicitly deferred to v0.3+. G-003 — add `pauseRun`/`resumeRun` to ApiClient in P3 as the single planned, documented interface extension (mock gains matching implementations), superseding the v0.1 client-side-pause comment; REQ-54's zero-rewrite promise is amended to "no *unplanned* rewrites."
+  - Escalation: [G-009] — owner must ratify the live-mode boundary at the P5 gate (see Escalations).
+
+### Axis 3 — Architecture and Technical Feasibility
+- **Q1**: Has the architecture been validated by the people who will build and operate it?
+  - Evidence: RESEARCH-v02.md — 8 topics with concrete API payload shapes, pitfalls, and 14 conclusions written for the builders (pydantic event unions, shielded state writes, `os.replace` atomicity, pytest-asyncio modes, hatchling `packages` key). But `backend/` does not exist yet — zero lines of the architecture have run.
+  - Answer: Design-side validation is strong (this is what a builder-facing research doc should look like); runtime validation is zero, by definition of P0. The risk concentrates at first contact: ollama.com/v1 shapes, Tavily payload, SSE backpressure. P1 Wave 3 is the first live proof.
+  - Confidence: 0.65
+- **Q2**: What is the integration surface, and where does it quietly double in cost?
+  - Evidence: Five adapter slots (ARCHITECTURE §2); SSE transport (D-014); OpenAPI client generation (D-013, RESEARCH §7 — flags operation-id stability and regen-from-snapshot discipline as pitfalls); the ApiClient surface gap (Axis 2 Q4).
+  - Answer: 5 adapters + SSE + codegen swap = 7 integration seams. The cost-doubling candidate is the P3 swap (seam #7) — precisely where the undocumented-endpoint problem sits. Second candidate: the openapi.json snapshot discipline exists only as a research *pitfall note*, not a P3 must-have.
+  - Confidence: 0.60
+  - Decision: G-005 — P3 must-have: commit the backend `openapi.json` snapshot; regenerate `frontend/src/lib/api/generated/` only from the snapshot (never a live server); add a schema-drift check to the gates; fix FastAPI operation-ids at route creation.
+- **Q3**: Is there an existing system being replaced — actual data volume, transaction rate, edge-case behavior?
+  - Evidence: Greenfield backend; the "replaced system" is `MockApiClient` (fixtures + scripted replay, frontend/src/lib/api/mock/). REQ-54 defines the swap contract; PERSONAS.md binds the frontend-engineer to it.
+  - Answer: No data migration risk. The migration is one interface binding line (client.ts:187) — provided G-002/G-003 are absorbed; otherwise the "small migration" is the biggest one in the project.
+  - Confidence: 0.70
+- **Q4**: What technical debt is inherited, and is it budgeted for?
+  - Evidence: (a) the v0.1 "client-side pause" comment (client.ts:69) contradicting REQ-15 — budgeted via G-003. (b) DDG `html.duckduckgo.com/html` scrape as the keyless fallback (D-012, confidence 0.75) — RESEARCH §3 itself warns "rate-limits aggressively... best-effort." (c) Scripted-replay SSE shape must match D-014's event union — verified aligned (D-014 rationale cites the MockApiClient replay contract).
+  - Answer: The DDG fallback is the fragility hotspot: a legacy HTML surface, conservatively scraped, that the research file already expects to fail. The zero-config promise of the product rests partly on it. Mitigation exists in design (surfaced warning, never hang) but is not yet test-enforced.
+  - Confidence: 0.55
+  - Decision: G-008 — DDG fallback is tested against recorded HTML fixtures only (never live-scraped in CI); the degradation contract (partial/empty results + typed warning, never hang, never block the engine) is asserted by test. DDG is documented as degraded-mode, not a reliable second source.
+
+### Axis 4 — People, Skills, and Organization
+- **Q1**: Which 2–3 people, if they left, would the project fail?
+  - Evidence: The entire delivery capability is one agent pipeline (coreci) + one owner (decision commit 3fd0e10; all directives owner-recorded). PERSONAS.md is a persona roster, not a human team.
+  - Answer: Key-person dependency is total and structural: owner disengagement stalls every gate by design (that is the governance model); pipeline failure stops all delivery. For a single-user, owner-directed tool this is acceptable — but it means timeline estimates are really "pipeline availability" estimates, and there is no bench.
+  - Confidence: 0.60
+- **Q2**: Are resources actually allocated at the percentages claimed?
+  - Evidence: Autonomy level "full" (config.json); v0.1 shipped 9 phases, PRs #1–#8, tags v0.1.0–v0.1.8 within ~10 hours of wall clock (commits dd2538f 00:44 → d6ddcfe 10:03, 2026-09-27).
+  - Answer: The pipeline is demonstrably 100% allocated and not fighting BAU fires — velocity is exceptional and verified by artifact trail, not status reports.
+  - Confidence: 0.85
+- **Q3**: Is there a product owner with actual authority to prioritize?
+  - Evidence: Owner directives recorded as binding decisions (D-018, D-019 at confidence 1.0); two gate rejections prove authority in practice.
+  - Answer: Unambiguous single owner; no committee. Model is working.
+  - Confidence: 0.90
+- **Q4**: Is the team building capability it doesn't have, hoping to learn as they go?
+  - Evidence: The stack is being built in-milestone: FastAPI, asyncio durability (shielded writes, CancelledError discipline — RESEARCH §5), sse-starlette, httpx adapters, openapi codegen. No backend code exists yet (repo is frontend-only today). RESEARCH-v02.md documents the failure modes in advance (pytest-asyncio event_loop removal, hatchling src-layout wheel pitfall, uvicorn single-worker constraint).
+  - Answer: Yes, capability is being built on the fly — acceptable here because (a) this is a prototype-to-MVP transition with research-backed patterns, and (b) zero-key fakes (REQ-31) mean the engine can be proven without live services. But P2 is where "learning asyncio under load" meets "13 requirements" — see Axis 5.
+  - Confidence: 0.60
+
+### Axis 5 — Timeline and Estimates
+- **Q1**: Was the deadline set before or after scope and approach were understood?
+  - Evidence: No wall-clock deadlines exist anywhere in ROADMAP v0.2 — sequencing is dependency-driven (P0→P5), cadence is owner gates (D-018: halt at the owner approval gate).
+  - Answer: No reverse-engineered deadline — the healthiest possible pattern. The only "date" is the owner's attention, which v0.1 proved is present.
+  - Confidence: 0.85
+- **Q2**: What is the critical path, and what single thing would push it by 3+ months?
+  - Evidence: Critical path P1 → P2 → P3 → P4 (sequential phases, ROADMAP). P2 is the milestone's heaviest phase: 13 requirements (REQ-07, 12, 13–24) including the durable asyncio state machine, trust loop, and live probing. The 3-month pusher is a P3 integration-drift discovery: the ApiClient surface gap (Axis 2 Q4) hitting mid-swap, after P2's engine is built against the wrong boundary assumptions.
+  - Answer: Critical path is P2-heavy and P3-fragile. G-002/G-003 defuse the P3 risk; P2's size needs a pressure valve.
+  - Confidence: 0.70
+  - Decision: G-006 — permit P2 to ship as two patches (P2a: engine + durable state + SSE; P2b: trust loop + live probe/REQ-07/12) or run mid-phase wave gates, without changing milestone scope; the P3 swap plan (endpoint list per G-002) must be drafted at P2 *start*, not P3 start, so drift surfaces before the engine is frozen.
+- **Q3**: Are the estimates evidence-based?
+  - Evidence: The only velocity base is v0.1: ~1 phase/hour sustained across 9 phases including review+audit each. v0.2 phases are materially heavier (greenfield backend, adversarial tests). MISSING: any per-phase sizing in ROADMAP/PLAN.
+  - Answer: No estimates exist to be wrong — but also none to be right. v0.1 velocity does not transfer 1:1 (frontend screens vs. a durable async engine); treating it as a base rate would understate P2. The mitigation is the phase-patch mechanism (G-006) rather than fake numbers, which this grill endorses over invented estimates.
+  - Confidence: 0.60
+- **Q4**: Is there a working definition of done?
+  - Evidence: Per-phase success criteria (ROADMAP); PLAN.md gates + "REQ coverage assert: each REQ mapped to ≥1 test or contract proof"; verify stage precedent (PASS-WITH-FIXES with in-phase P0 fixes, PRs #4/#6/#8); final owner gate.
+  - Answer: Yes, and it is enforced — v0.1 reviews fixed 5 P0s and multiple P1s *in-phase*, which is proof the DoD has teeth.
+  - Confidence: 0.85
+  - Decision: G-001 — resolve a DoD contradiction inside P1's own plan: PLAN.md must_haves and tasks T-1.10/T-1.11 claim REQ-07/REQ-12 delivery ("GET /models + structured-output smoke test" = live probing) while PLAN's frontmatter (`requirements: [REQ-01..06, 08..11, 31]`), ROADMAP P1 ("REQ-07, REQ-12 ship in P2... live probing against real endpoints in P2"), and REQUIREMENTS traceability all map them to P2. Binding: P1 ships the typed ProbeResult + structured-output warning *contracts* proven with fake adapters; live endpoint probing executes in P2 with the engine. Secondary bookkeeping fix in the same decision: the "REQ-13..24" range notation includes REQ-17 in both P2 and P4 rows — REQ-17 (3-click on real stack) stays in P4; ranges are corrected to exclude it.
+
+### Axis 6 — Budget and Financial Realism
+- **Q1**: What percentage of budget is spent vs. remaining?
+  - Evidence: MISSING — no cost ledger exists. Known spends: pipeline tokens (v0.1: 9 phases of agent execution; v0.2 P0 stages), Ollama cloud key (config.json secrets scope `model`), Tavily key (scope `search`), self-hosted LXC infra (DEPLOY-RECORD.md).
+  - Answer: Untracked. For a single-user local-first tool the absolute numbers are small, but "untracked" is still a finding: no one can currently answer what a Deep Report run costs.
+  - Confidence: 0.60
+- **Q2**: Are there predictable cost drivers not in the original budget?
+  - Evidence: Deep Report = depth 3/breadth 2 → per run: ~dozens of model calls (planner + depth-loop reflections + writer + verification passes) plus search calls; Ollama cloud is pay-per-use; Tavily free tier is quota-capped; DDG fallback is free-but-fragile (D-012). Localhost:11434 fallback is the zero-cost escape hatch (REQ-08).
+  - Answer: Cost drivers are real and unbounded per run (no request caps on loops beyond dial defaults). The local-fallback design keeps the project from *hard* dependency on spend, but there is no visibility.
+  - Confidence: 0.60
+  - Decision: G-007 — per-run counters (model requests, tokens, search calls) recorded in the run trace and surfaced via `GET /api/config`; advisory only in MVP.
+- **Q3**: Burn rate and runway?
+  - Evidence: MISSING formal tracking; mitigated by local-first defaults (keyless localhost fallback, DDG keyless fallback) meaning the runway floor is "zero marginal cost, degraded mode."
+  - Answer: The architecture is honest about this: the product's default posture degrades to free. Runway is effectively unbounded if the owner accepts degraded mode; the grill accepts this as sound for the MVP.
+  - Confidence: 0.70
+- **Q4**: Is the budget contingent on something that hasn't happened yet?
+  - Evidence: No — no sale/board/hiring dependency. Keys exist (config.json scopes), infra exists (LXC), pipeline is running.
+  - Answer: Not contingent. Proceed.
+  - Confidence: 0.80
+
+### Axis 7 — Risks, Assumptions, and Dependencies
+- **Q1**: Top 3 assumptions, and evidence for each?
+  - Evidence: (a) *Adapter endpoint compatibility* — ollama.com/v1 OpenAI-shape and Tavily POST payload researched with concrete shapes (RESEARCH §2/§3), but unvalidated live in-repo; P1 Wave 3 is the test. (b) *DDG fallback stability* — RESEARCH §3 itself rates it "best-effort, aggressively rate-limited" (weakest assumption in the plan; D-012 confidence 0.75). (c) *Zero-rewrite client swap* — typed boundary exists (client.ts), RESEARCHX_API_MODE designed (D-020), but the interface gaps (Axis 2 Q4) undercut it until G-002/G-003 land.
+  - Answer: Two of three are well-evidenced; the DDG assumption is the one the project's own research argues against relying on. All three have named first-contact phases (P1 Wave 3, P2, P3).
+  - Confidence: 0.60
+  - Decision: G-008 (fixture-tested DDG degradation contract) — see Axis 3 Q4.
+- **Q2**: External dependencies outside the team?
+  - Evidence: Tavily quota; Ollama cloud key validity; DDG uncontrolled HTML surface; none of these are under the project's control; all have fallbacks *except* Tavily→DDG quality.
+  - Answer: Dependencies are acknowledged with degradation paths — the correct posture. The unmitigated residual is *degraded search quality* when Tavily is exhausted, which directly attacks the ≥99% liveness bar.
+  - Confidence: 0.65
+- **Q3**: The single risk that kills the project, and is there a mitigation?
+  - Evidence: P3 swap discovering the ApiClient/surface drift after the engine is frozen (evidence chain: client.ts:123–179 vs REQ-25; ROADMAP P3 "the ApiClient interface absorbs any prototype-era API drift" — an assertion, not a plan).
+  - Answer: Kill risk = integration drift at P3 → rework spiral through a hand-rolled engine → owner patience (already tested twice by extensions) exhausts. Mitigation now exists in writing: G-002 (boundary declared), G-003 (interface change planned), G-005 (snapshot discipline), G-006 (P3 plan drafted at P2 start). This grill's core job is done if those four hold.
+  - Confidence: 0.65
+- **Q4**: Has a pre-mortem been done?
+  - Evidence: MISSING — no pre-mortem artifact. This grill is the closest proxy.
+  - Answer: "It's 12 months out and v0.2 failed" — the derivable causes, in order: (1) P3 surface gap hit late (mitigated: G-002/003/005/006); (2) P2 asyncio durability bugs (pause/resume across restarts is genuinely hard — mitigated by RESEARCH §5 patterns + REQ-32 pause-mid-depth-loop adversarial tests); (3) quote anchoring thrash on real noisy pages (difflib 0.85 is fixture-proven only — live-page behavior unknown until P4/live runs); (4) DDG dead + Tavily exhausted → un-demoable zero-config mode (mitigated: G-008 + owner-held Tavily key).
+  - Confidence: 0.60
+
+### Axis 8 — Governance, Decision-Making, and Communication
+- **Q1**: Who is the decision-maker when two parties disagree?
+  - Evidence: Single owner; all decisions recorded as decision commits (3fd0e10; D-007..D-020 in e79102b); escalation hooks codified in config.json (deploy, delete_data, merge_to_main, prototype_approval).
+  - Answer: Unambiguous. No dual-executive stall is possible in this structure.
+  - Confidence: 0.90
+- **Q2**: Governance cadence and escalation pattern — useful in a crisis?
+  - Evidence: Per-phase ship + verify + audit with `---ci---` blocks; v0.1 precedent: pipeline *halted itself* at gates twice (7db53d62, 57c5231) rather than self-approving — the escalation pattern is proven under the exact stress it exists for.
+  - Answer: Cadence is per-phase and gates have been exercised under pressure. Crisis-tested by construction.
+  - Confidence: 0.85
+- **Q3**: What is being omitted from status reports?
+  - Evidence: Honest reporting verified in history: "PASS-WITH-FIXES," "PASS-WITH-NOTES," "approval_pending," P0s disclosed and fixed in-phase; DEPLOY-RECORD.md as a separate ledger. The one systemic omission this grill found lives in *spec comments, not status blocks*: the client.ts v0.2 endpoint mappings that were never promoted into REQUIREMENTS — a silent scope assumption, now surfaced (G-002).
+  - Answer: Status reporting is honest. Spec-side implication drift is the channel where optimism leaked — and it's now on the record.
+  - Confidence: 0.80
+- **Q4**: Is there a stop-the-project trigger?
+  - Evidence: Owner rejection at gate → binding fix cycle (v0.1 exercised twice); v1.0.0 owner-only (config.json major_locked); D-018 halts at the v0.2 gate; D-019 forbids deploys without directive.
+  - Answer: Yes — and rejection has demonstrably not become politically impossible; the owner said "not yet, extend" twice without ceremony.
+  - Confidence: 0.85
+
+### Axis 9 — Change, Adoption, and Operational Readiness
+- **Q1**: Who will use this, how does their work change, and what's in it for them?
+  - Evidence: Single-user owner-researcher (PROJECT.md constraint: "Single-user, local-first"); work change = ad-hoc prompting → structured, reproducible methodology runs with auditable citations (REQ-04 dial snapshots, REQ-21 ledger, REQ-22 checklist).
+  - Answer: The user is the sponsor — adoption politics are minimal, and the value proposition (trustable citations) is the same thesis the sponsor approved twice. The real adoption test is whether live-mode runs *feel* better than the mock — which lands at P4/REQ-17.
+  - Confidence: 0.80
+- **Q2**: Is ops involved now, or handed a finished product at go-live?
+  - Evidence: The pipeline *is* ops: deploy.sh with rolling swap + `researchx-prev` rollback container (commit 2ffc71c), gates re-run at deploy time (DEPLOY-RECORD.md rows), VERSIONING.md rules. Gap: the deploy system is frontend-only; the MVP's live mode requires a local backend process (uvicorn, single worker — RESEARCH §4) whose serving story at the owner gate is undefined (D-019 forbids deploys without directive, so live-mode *presentation* mode is an open question).
+  - Answer: Ops is built-in and rollback-capable for the frontend. The backend has no deploy story — coherent with local-first, but it means the P5 owner-gate demo of the *live* MVP needs a plan (local backend + keys at demo time, or gate runs on mock mode). This rides with G-009.
+  - Confidence: 0.60
+- **Q3**: What is the rollback plan?
+  - Evidence: Tags v0.1.0–v0.1.8 preserve history; deploy.sh swaps containers with a `researchx-prev` rollback; durable run state is per-run JSON on local disk (D-017) — engine changes cannot corrupt other runs' state; frontend mock mode (RESEARCHX_API_MODE=mock default, D-020) is itself a rollback for the entire live integration.
+  - Answer: Multi-layer rollback exists and is codified. The mock-default flag is an unusually good one — the MVP can ship with live mode opt-in, making go-live risk nearly zero.
+  - Confidence: 0.80
+- **Q4**: Have success criteria been validated with the people who will judge success?
+  - Evidence: REQ-17 (≤3 clicks on real stack) is P4-tested, validated on mock in v0.1 (REQ-61 pinned by test). REQ-23 (≥99% citation liveness) — **measurement gap**: the entire adversarial suite is zero-key on a 5–8 page fixture corpus (RESEARCH §5b); 99% liveness on fixture URLs is vacuous, and no keyed/live validation run is scheduled anywhere in P1–P5.
+  - Answer: The 99% bar — the project's headline promise — is currently scheduled to be "verified" in a harness that cannot verify it. If the owner gate treats REQ-23 as CI-green, the status report will be honest-looking but hollow.
+  - Confidence: 0.55
+  - Decision: G-004 — REQ-23 is defined as a **runtime per-run gate** enforced at export (failures listed in the verification checklist, REQ-22) plus an opt-in, keyed, live-URL test tier (skipped by default, run before ships at owner discretion); P4 proves the *gate mechanics* with fixtures and explicitly does not claim live 99% attainment. The MVP definition of done for REQ-23 = the gate exists and enforces, not "CI showed 99%."
+
+### Meta — Closing Review
+- **Q1**: If you were the auditor, what would you flag?
+  - Evidence: The two internal contradictions (PLAN vs ROADMAP/REQUIREMENTS on REQ-07/12, PLAN must_haves vs PLAN frontmatter; REQ-17 double-mapped in range notation) and the spec-comment endpoint mappings outside REQ-25 (client.ts:123–179).
+  - Answer: Flag #1: phase-mapping integrity — the traceability table is the single source of truth and PLAN must conform to it (G-001). Flag #2: an approved artifact (client.ts) documents v0.2 API surface that the v0.2 spec does not contain — the grill treats this as the most consequential process lapse found, because it would have surfaced as a P3 "surprise" after the engine was frozen.
+  - Confidence: 0.75
+- **Q2**: What is the project not doing that it should?
+  - Evidence: Missing items found across axes: openapi snapshot drift check as a gate (G-005), per-run cost counters (G-007), live-URL test tier for REQ-23 (G-004), P3 swap plan at P2 start (G-006), fixture-based DDG tests (G-008), live-mode boundary declaration (G-002).
+  - Answer: All six are now bound. Nothing found suggests the project is doing something it should not.
+  - Confidence: 0.75
+- **Q3**: What is the simplest version that delivers 80% of the value?
+  - Evidence: The MVP already trimmed to 2 of 8 methodologies (REQ-03) and a core-loop-only API (REQ-25). The remaining 20% of complexity carrying outsized risk: Deep Report's depth-3 breadth-2 loop (multiplies engine, trust, and cost surface) vs. Rapid Answer's depth-1 single-pass core.
+  - Answer: Rapid Answer alone + trust loop = 80% of the thesis proof. Deep Report is the pre-agreed deferral lever if P2 overruns — decided *now*, while it is cheap, rather than mid-crisis.
+  - Confidence: 0.65
+  - Decision: G-010 — contingency lever, pre-agreed: if P2/P4 slip beyond one extension cycle, Deep Report (REQ-03 partial) defers to v0.3 and the MVP ships Rapid Answer end-to-end; the lever requires owner sign-off when pulled, per gate rules.
+- **Q4**: What must be true for this to succeed in the next 90 days, and is it true today?
+  - Evidence: Required: (a) researched adapter shapes hold live (untested — first proof P1 Wave 3); (b) owner engagement continues (proven: 3 gate decisions in one day); (c) Tavily key active/quota available (held in secrets scope; unverified live); (d) the P3 boundary is as declared in G-002 (currently *not* true in writing — client.ts says otherwise).
+  - Answer: Three of four are true or evidenced; (d) becomes true when the orchestrator promotes G-002/G-003. That promotion is the gating action of this entire grill.
+  - Confidence: 0.70
+
+---
+
+### Binding Decisions
+| ID | Axis | Decision | Confidence |
+|----|------|----------|-----------|
+| G-001 | 2/5 | Resolve the REQ-07/REQ-12 phase contradiction in PLAN.md's favor of the ROADMAP/traceability mapping: P1 ships typed probe/warning contracts proven with fakes; live endpoint probing (GET /models, structured-output smoke test) executes in P2. Reword PLAN must_haves T-1.10/T-1.11 to contract level; fix the REQ-13..24 range notation so REQ-17 appears only in P4. | 0.85 |
+| G-002 | 2/3 | Declare v0.2 live-mode surface = core research loop only (Ask, Choose, Plan & Run, Reading Room, read-only GET /api/config). Library, Settings persistence, Suggestions, Refine, project graph, task inbox, user profile stay mock-bound in live mode, honestly marked; their backends are v0.3+ scope. Update client.ts v0.2-mapping comments accordingly. | 0.80 |
+| G-003 | 3 | Add `pauseRun`/`resumeRun` to the ApiClient interface in P3 as the single planned, documented interface extension (mock gains matching implementations); run-level pause is server-side per REQ-15/REQ-25, superseding the v0.1 "client-side concerns" comment. REQ-54 amended: no *unplanned* rewrites. | 0.80 |
+| G-004 | 7/9 | REQ-23 (≥99% liveness) is a runtime per-run gate enforced at export and surfaced in the verification checklist — not a zero-key CI assertion. Add an opt-in keyed live-URL test tier (skipped by default). P4 proves gate mechanics with fixtures; MVP DoD for REQ-23 = the gate exists and enforces. | 0.75 |
+| G-005 | 3/5 | P3 must-have: commit the backend openapi.json snapshot; regenerate frontend/src/lib/api/generated/ only from the snapshot; add a schema-drift check to gates; fix FastAPI operation-ids at route creation. | 0.85 |
+| G-006 | 5 | Permit P2 (13 REQs — heaviest phase) to ship as two patches (P2a engine+durable state+SSE, P2b trust loop+live probe) or run mid-phase wave gates without milestone scope change; draft the P3 swap endpoint plan (per G-002) at P2 start, not P3 start. | 0.70 |
+| G-007 | 1/6 | Per-run advisory counters (model requests, tokens, search calls) recorded in the run trace and surfaced via GET /api/config — the cheapest honest ROI/burn instrumentation; no hard spend cap in MVP. | 0.70 |
+| G-008 | 3/7 | DDG fallback tested against recorded HTML fixtures only (never live-scraped in CI); degradation contract (partial/empty + typed warning, never hang the engine) asserted by test; DDG documented as degraded-mode, not a reliable second source. | 0.70 |
+| G-010 | Meta | Pre-agreed contingency lever: if P2/P4 slip beyond one extension cycle, Deep Report (depth 3) defers to v0.3 and the MVP ships Rapid Answer end-to-end; pulling the lever requires owner sign-off at a gate. | 0.65 |
+
+### Escalations
+- [G-009] Axis 2 — Owner ratification required at the P5 gate (D-018 halt): the v0.2 MVP demonstrates the **live core research loop only**; the remaining approved-prototype surfaces (Library, Settings persistence, Suggestions, Refine, graph/inbox previews, profile) remain mock-bound until v0.3+, and the live-mode gate demo requires a local backend + keys (or runs in mock mode) since D-019 forbids deploys. This redefines what "MVP done" looks like at the demo and must not be discovered by the owner at the gate — it must be ratified in advance. Engineering-side handling is bound in G-002/G-003; the ratification itself is unresolved until the owner records it.

.ciagent/PERSONAS.md

@@ -1,46 +1,56 @@
-# Personas — Milestone v0.1 (Prototype)
+# Personas — Milestone v0.2 (MVP)
 
 ---
 active:
+  - name: backend-engineer
+  - name: data-engineer
   - name: frontend-engineer
   - name: ci-lead-developer
-phase_specific: []
-reason: "v0.1 is a pure frontend prototype (Next.js, mock data). Only the frontend domain has work; backend/data personas activate in v0.2. Lead-developer coordinates decomposition and enforces the ApiClient boundary."
+phase_specific:
+  - name: security-engineer
+    phases: [2]
+reason: "v0.2 is the MVP: FastAPI backend + engine + adapters + trust loop (backend/data domains activate), the frontend consumes the OpenAPI-generated client in P3 (frontend stays active for the binding swap + P4 E2E), and the trust loop in P2 needs a phase-specific security-engineer for secrets handling and liveness verification. Lead-developer coordinates."
 ---
 
 ## Roster
 
+### backend-engineer
+- **Domain**: backend
+- **Active**: true
+- **Phase-specific**: false
+- **Frameworks**: fastapi, pydantic v2, uv, uvicorn, sse-starlette, httpx, pytest, pytest-asyncio
+- **Constraints**: src-layout package `researchx` in backend/; all external I/O lives in adapters — engine imports no vendor SDKs (httpx only inside adapters); no blocking calls in async paths; durable state via atomic tmp+os.replace; never swallow CancelledError; API layer is transport only (no business logic); single uvicorn worker (single-user)
+- **Territory**: `backend/**`
+
+### data-engineer
+- **Domain**: data
+- **Active**: true
+- **Phase-specific**: false
+- **Frameworks**: pydantic v2 (schemas), pytest
+- **Constraints**: owns the pydantic schema contracts: dial schema (REQ-01), run state, evidence store models (stable passage IDs), citation ledger JSON schema (REQ-21); pure data + validation — no I/O in schema modules; every run persists resolved dial values (REQ-04)
+- **Territory**: `backend/src/researchx/config/**`, `backend/src/researchx/evidence/**`
+
 ### frontend-engineer
 - **Domain**: frontend
 - **Active**: true
 - **Phase-specific**: false
-- **Frameworks**: next.js (App Router), react 19, typescript (strict), tailwind, vitest
-- **Constraints**: component-first; server components by default, client components only where interactivity demands; all data access through the ApiClient interface — components never import MockApiClient directly; no secrets or env keys in the frontend; typography care per vision §4
+- **Frameworks**: next.js (App Router), react 19, typescript (strict), tailwind, vitest, openapi-fetch, openapi-typescript
+- **Constraints**: components never import the mock client or the generated client directly — only the ApiClient boundary does; RESEARCHX_API_MODE=mock|live selects the binding, mock default; no secrets or env keys in the frontend (NEXT_PUBLIC_API_BASE_URL only); zero component rewrites in the P3 swap (REQ-54/REQ-26)
 - **Territory**: `frontend/**`
 
+### security-engineer (phase-specific: P2)
+- **Domain**: security
+- **Active**: true (P2 only)
+- **Phase-specific**: true
+- **Frameworks**: httpx, pytest, STRIDE analysis
+- **Constraints**: secrets resolve from env-file scopes only (OLLAMA_API_KEY, TAVILY_API_KEY, GITEA_TOKEN via .ciagent/.env.secrets) — never shell env, never logged, never in git; liveness verification and trust-loop code must not leak keys in errors or traces; SSRF guard for fetched URLs (private-address refusal); authority tiering must not phone home
+- **Territory**: `backend/src/researchx/trust/**`, `backend/src/researchx/adapters/secrets*/**`
+- **Removal**: deactivate after P2 ships
+
 ### ci-lead-developer
 - **Domain**: coordination
 - **Active**: true
 - **Phase-specific**: false
 - **Frameworks**: ciagent workflows, git discipline
-- **Constraints**: enforce persona territories; ApiClient boundary review; commit discipline with ---ci--- blocks; phase-boundary file updates only (no .ciagent/ writes during task execution)
-- **Territory**: `.ciagent/**`, repo root config files
-
-### Deactivated (v0.1)
-
-#### backend-engineer
-- **Domain**: backend
-- **Active**: false
-- **Reason**: No backend in the prototype milestone; the FastAPI backend is milestone v0.2 (blocked until prototype approval)
-- **Frameworks**: fastapi, pydantic, uv (activates in v0.2)
-- **Territory**: `backend/**` (does not exist yet)
-
-#### data-engineer
-- **Domain**: data
-- **Active**: false
-- **Reason**: No database/schema work in v0.1; evidence store and citation ledger models arrive in v0.2; prototype uses typed fixtures
-- **Frameworks**: pydantic schemas (activates in v0.2)
-- **Territory**: `backend/src/researchx/evidence/**` (does not exist yet)
-
-### Custom personas
-None required for v0.1. The security-auditor persona activates in v0.2 phase 2 (trust loop: secrets handling, liveness verification). No CLI surface exists in this milestone, so no cli-engineer.
+- **Constraints**: enforce persona territories; adapter/engine boundary review (I/O only in adapters); commit discipline with ---ci--- blocks; phase-boundary file updates only (no .ciagent/ writes during task execution); gates green before every ship
+- **Territory**: `.ciagent/**`, repo root config files (README, VERSIONING, .gitignore)

.ciagent/PLAN.md

@@ -1,54 +1,81 @@
-# PLAN — Milestone v0.1 Phase 8 (FINAL): Review + Approval Re-presentation + Ship
+# PLAN — Milestone v0.2 Phase 1: Methodology Framework + Adapter Layer
 
 ---
-phase: 8
-milestone: v0.1
-status: executed
+phase: 1
+milestone: v0.2
+status: planned
 must_haves:
-  - "Full-milestone 2nd final review: PASS-WITH-FIXES — double-compose race + dead drawer-keyboard P1s fixed with regression tests (90/90); P6/P7 fixes verified holding"
-  - "Audit: PASS-WITH-NOTES — reconstruction, tags, file/branch/commit discipline, secrets sweep green; notes applied (ARCHITECTURE §7 + Build Order, root README /ask row, VERSIONING table, About string, package.json version)"
-  - "Final phase patch v0.1.8 shipped — milestone release candidate, presented at the REQ-62 owner approval gate with UAT staged per owner cadence"
+  - "backend/ uv project scaffolds with one command (uv sync) and gates green from the first commit (ruff, mypy strict, pytest)"
+  - "12-dial typed schema with safe defaults resolves; every methodology = named dial bundle + planner/writer templates + output shape; registry resolves by slug (rapid-answer, deep-report)"
+  - "Resolved dial values persist to run config and are auditable (REQ-04) — schema-level contract proven by test"
+  - "Adapter contracts (model/search/storage/memory/secrets) typed; local implementations + fake model/search adapters enable zero-API-key engine tests (REQ-31)"
+  - "Probe/warning CONTRACTS typed and proven with fakes: capability-probe result (context cap min(model claim, 8192), embedding batch 8) and structured-output warning surfaces [REQ-07/REQ-12 contracts; LIVE endpoint probing executes in P2 per grill G-001]"
+  - "Model adapter: Ollama cloud-first with keyless localhost fallback (REQ-08); search: Tavily default + DDG keyless fallback (REQ-09); storage: local FS Markdown/JSON (REQ-10); memory stubbed off, secrets env-backed (REQ-11)"
+  - "Structured-output weakness warning CONTRACT (REQ-12): typed warning surface + graceful-degrade path proven with fakes"
 personas:
+  - data-engineer
+  - backend-engineer
   - ci-lead-developer
-requirements: [REQ-62]
+requirements: [REQ-01, REQ-02, REQ-03, REQ-04, REQ-05, REQ-06, REQ-08, REQ-09, REQ-10, REQ-11, REQ-31]
 ---
 
 ## User-Facing Surface
 
-The extended prototype presented for owner approval: everything from v0.1.6 (shell, library, settings, avatar) plus the v0.1.7 ask-intelligence layer — open-question suggestions and the refine dialogue on the New Research view. Releases v0.1.0–v0.1.8; v0.1.8 is the extended-prototype release candidate.
+No new UI in P1 — the frontend is untouched (mock-backed, still v0.1-complete). User-facing surface for P1 is the **backend package itself**: `uv sync && uv run uvicorn researchx.api.app:app` boots a healthless dev server skeleton (routes land in P3), and the methodology registry + adapters are exercisable from tests and a documented README quickstart section. The deliverable P1 surface ships to the user in P3 when routes + the client swap go live.
 
-## Happy Path (owner review script)
+## Happy Path (P1 — test/README script, written before execute)
 
-1. `cd frontend && pnpm install && pnpm dev` → http://localhost:3000 → shell renders on /ask
-2. Ask → question → Research this (click 1)
-3. Choose → Deep Report card → Start research (click 2)
-4. Plan & Run → Approve plan (click 3) → live trace → pause/resume/cancel
-5. Read the report → hover [n] → exact quote; ledger; export Markdown/JSON
-6. New research → click an open-question suggestion → box fills (no auto-start) → edit → Research this
-7. New research → type a draft → Refine question → answer the 3 clarifying questions (skip the optional two) → Use this → question + context filled → Research this
-8. Library → folder tree → stored report opens its own report; Connections panel; ⌘K palette
-9. Avatar → user menu → Settings → API keys masked, methodology defaults live preview
-10. Owner decision: approve → v0.1.8 published + milestone merge to main; or request changes
+1. `cd backend && uv sync` — installs Python 3.12 + deps, editable researchx, dev tools
+2. `uv run pytest` — full suite green with zero API keys (fake adapters drive everything, REQ-31)
+3. `uv run python -c "from researchx.methodologies import registry; m = registry.get('deep-report'); print(m.dials.depth)"` → `3` — registry resolves by slug, dial bundle typed
+4. `uv run python -c "from researchx.config.dials import Dials; print(Dials().model_dump())"` → all 12 dials with safe defaults
+5. `uv run ruff check src tests && uv run mypy src` → clean
+6. Frontend gates still green (untouched): `corepack pnpm typecheck && corepack pnpm test` from frontend/
 
-## What this phase did
+## UX Acceptance Criteria (P1)
 
-1. **Review** (multi-persona, P7-weighted, probe-verified): verdict PASS-WITH-FIXES. P1s: Enter at the last exchange question composed twice (stale section-level keydown guard re-ran submitAnswer after the input guard advanced — invisible with the deterministic mock, a doubled paid POST the day v0.2 wires the endpoint) and Enter on focused drawer buttons was dead (section preventDefault swallowed the click). Fixed: single Enter path (input guard owns Enter; buttons self-activate); error state gained a Keep original button (mouse-user trap). 2 regression tests (single-compose spy, Enter-on-button); suite 88 → 90. Adversarial probe: no drawer control can submit the outer form. P6/P7 fixes verified holding.
-2. **Audit**: PASS-WITH-NOTES — tags v0.1.0–v0.1.7 verified (annotated, on-branch, mapped to ship records); DEPLOY-RECORD.md tracked + accurate; branch hygiene exact; commit discipline clean (---/ci--- closer holding since the P6 regression); secrets clean across history; REQ-67/68 spot-checked as genuinely delivered; gates re-run live (90/90). Notes applied: ARCHITECTURE.md §7 + Build Order extended with the ask-intelligence layer; root README /ask row updated; VERSIONING table → v0.1.8; settings About + package.json → v0.1.8.
-3. **Ship (this commit sequence)**: PR #8 (phase/08 → milestone), squash-merge, tag v0.1.8, release with full milestone summary, v0.1.8-uat staged on the LXC host per owner cadence. Per REQ-62 and the prototype_approval escalation hook, the milestone merge to main does NOT proceed autonomously — the pipeline halts at the gate for the recorded owner decision.
+- One-command backend setup (uv sync) with zero manual steps beyond uv itself
+- Every adapter contract is typed; fakes implement the full interface — no stub methods, no TODOs
+- No API key is ever required to run the test suite; no secret value ever reaches a log line, error message, or fixture
+- Degradation is honest: probe results and structured-output warnings are typed data, not console noise
 
-## UX Acceptance Criteria
+## Tasks (waves — dependency-ordered, persona-assigned)
 
-- Owner demo script runs clean on the shipped code (probe- and test-verified)
-- Suggestions + refine never auto-submit; drafts stay untouched on dismiss
-- The 3-click criterion still pinned green on AskView (affordances opt-in)
-- Honest captions everywhere; keyboard accessible throughout
+### Wave 1 — Schema core (data-engineer)
+- **T-1.1** `backend/pyproject.toml` + src-layout skeleton: packages config, deps, dev group, ruff/mypy/pytest config (hatchling packages key, pythonpath src, asyncio_mode auto) [REQ-33 seed — tooling; full monorepo story completes in P3/P4]
+- **T-1.2** Dial schema: `researchx/config/dials.py` — 12 typed dials (source universe, search routing, query strategy, breadth, depth, quality gates, citation rigor, verification passes, synthesis style, output structure, memory scope, checkpoints), each with safe default; pydantic v2 [REQ-01]
+- **T-1.3** Methodology model + registry: `researchx/methodologies/` — methodology = named dial bundle + planner/writer prompt templates + output shape; registry resolves by slug; ships Rapid Answer (depth 1, breadth 1, memo, per-claim citations) + Deep Report (depth 3, breadth 2, executive report, full verification); behavior-difference contract documented + asserted (different query sets/depth/output shape) [REQ-02, REQ-03, REQ-05]
+- **T-1.4** Run-config contract: resolved dial values snapshot model (persisted per run — storage wiring lands with the engine in P2; schema + round-trip test here) [REQ-04]
 
-## Verification
+### Wave 2 — Adapter contracts + fakes (backend-engineer)
+- **T-1.5** Adapter contract types: `researchx/adapters/` — model (OpenAI-compatible, planner/writer roles), search (Tavily/DDG), storage (local FS), memory (stub), secrets (env-file); all I/O behind interfaces; httpx confined to adapters [REQ-06, REQ-10, REQ-11]
+- **T-1.6** Fake adapters: FakeModelAdapter (canned planner/writer), FakeSearchAdapter (fixture corpus) — full interface implementations; zero API keys [REQ-31]
+- **T-1.7** Storage adapter: local FS write of run artifacts (Markdown/JSON under user-chosen dir); run ID generation (8-char slug) [REQ-10, D-010]
+- **T-1.8** Secrets adapter: env-file resolution (.ciagent/.env.secrets + .env scopes per config.json); never logs values [REQ-11]
 
-- Gates: typecheck ✓ lint ✓ tests 90/90 ✓ build ✓ (re-run after review fixes, plus by audit)
-- Regression tests pin: single-compose, Enter-on-button, focus return, Enter-guard, no-auto-submit
-- Post-hoc v0.2 log: compose-endpoint idempotency key; freeze draft at drawer-open; confirm-overwrite when context non-empty; Try-again from error state; textarea answers; aria-live progress
+### Wave 3 — Real adapters + probe contracts (backend-engineer)
+- **T-1.9** Model adapter: OpenAI-compatible chat completions against OLLAMA_BASE_URL (default https://ollama.com/v1, Bearer OLLAMA_API_KEY) with keyless http://localhost:11434/v1 fallback on auth/connection failure; planner/writer roles [REQ-06, REQ-08]
+- **T-1.10** Capability-probe contract + implementation: GET /models + structured-output smoke test; conservative caps: context min(claim, 8192), embedding batch 8; typed probe result with overrides; proven with fakes here — LIVE probing against real endpoints executes in P2 [REQ-07 contract, G-001]
+- **T-1.11** Structured-output warning contract: smoke-test failure → typed warning surfaced for UI; degrade to prompt-embedded JSON contract — never cryptic failure [REQ-12 contract, G-001]
+- **T-1.12** Search adapter: Tavily (POST api.tavily.com/search, key from secrets) default; DDG keyless fallback (html.duckduckgo.com/html conservative scrape, max 8, one backoff, typed degradation warning — degraded-mode contract per G-008); registry selects by key presence [REQ-09, D-012]
 
-## Scope Guard
+### Wave 4 — Integration proofs (ci-lead-developer)
+- **T-1.13** Cross-cutting test: registry → dial resolution → fake-model plan fixture → dial snapshot round-trip; methodology behavior-difference assertion (Rapid Answer vs Deep Report query sets/depth/output shape) [REQ-05]
+- **T-1.14** README + VERSIONING updates: backend quickstart (uv sync/uv run uvicorn), adapter config table (env vars, no values), monorepo command map [REQ-33 partial]
 
-Milestone merge to main, v0.1.8 publication, v0.2 unblocking, and all v0.2 P1 work wait on the owner approval gate (REQ-62, prototype_approval escalation hook). The pipeline does not proceed autonomously past this commit.
+## Out of scope for P1 (later phases)
+- Engine state machine, evidence store, trust loop (P2); API routes, SSE, OpenAPI client swap (P3); adversarial/E2E suite (P4)
+
+## Milestone-level constraints promoted from grill G-001..G-010 (binding, absorbed by phase plans)
+- **Live-mode surface (G-002)**: v0.2 live mode = core research loop only (runs, methodologies, lifecycle, SSE, config status). Library persistence, Settings persistence, Suggestions, Refine, graph/inbox, profile stay mock-bound until v0.3+ — owner ratifies at the P5 gate (escalation G-009)
+- **ApiClient extension (G-003)**: P3 adds pauseRun/resumeRun as the SINGLE planned interface extension; client.ts endpoint-mapped surfaces beyond the core loop stay mock-backed
+- **Liveness gate (G-004)**: REQ-23 ≥99% is a runtime per-run export gate + an opt-in keyed live-URL test tier — never a zero-key CI assertion on the fixture corpus
+- **OpenAPI snapshot discipline (G-005)**: P3 must commit an openapi.json snapshot; regen only from the snapshot; schema-drift gate; stable operation-ids
+- **P2 split lever (G-006)**: if P2 slips beyond one extension cycle it may ship as two patches (P2a engine/SSE, P2b trust/probe); P3 swap endpoint plan drafted at P2 start
+- **Cost counters (G-007)**: per-run advisory request/token/search counters surface via GET /api/config (P3)
+- **Contingency lever (G-010)**: if P2/P4 slip beyond one extension cycle, Deep Report defers to v0.3 and the MVP ships Rapid Answer end-to-end — owner sign-off required to pull this lever
+
+## Verification hooks (consumed by VERIFY)
+- Gates: `uv run ruff check src tests`, `uv run mypy src`, `uv run pytest` (backend); `corepack pnpm typecheck/lint/test/build` (frontend, must stay green)
+- REQ coverage assert: REQ-01..06, 08..11, 31 each mapped to ≥1 test or contract proof
+- Security: no secret values in code/fixtures/logs; SSRF not yet applicable (no page fetching until P2 evidence store)

.ciagent/PROJECT.md

@@ -51,5 +51,13 @@ Vision finalized and locked 2026-09-26: v1 methodology composition LOCKED (8 cor
 - Model adapter default: Ollama cloud-first (ollama.com/v1) with keyless localhost:11434/v1 fallback on auth/connection failure
 - Prototype-first gate (owner): UI/UX prototype with mock data, approved before MVP work; prototype is its own milestone (v0.1)
 - Versioning (owner): starts at v0.1; MAJOR locked at 0 until owner-approved v1 release; MVP may span multiple 0.x minor milestones
-- Prototype = production Next.js frontend with typed ApiClient/MockApiClient split — zero throwaway work; phase 4 of v0.2 swaps the mock for the OpenAPI client
-- Tag-line mapping: 0.x milestones run patches on their own minor line (v0.1.x); supersedes the greenfield deviation noted at init
+- Prototype = production Next.js frontend with typed ApiClient/MockApiClient split — zero throwaway work; phase 3 of v0.2 swaps the mock for the OpenAPI client
+- Tag-line mapping: 0.x milestones run patches on their own minor line (v0.1.x); supersedes the greenfield deviation noted at init
+
+## Key Decisions (v0.2 clarify — D-007..D-020, 2026-09-27)
+- Backend layout: `backend/` repo-root package, src-layout `researchx` (config, methodologies, adapters, engine, evidence, trust, api per ARCHITECTURE §Components); uv + uv-managed Python 3.12 (D-007/D-008)
+- Ports/binding: backend 127.0.0.1:8000, frontend :3000 via NEXT_PUBLIC_API_BASE_URL; CORS localhost:3000 (D-009); run IDs = 8-char slugs; storage = <dir>/runs/<id>/ (D-010)
+- Adapters: Ollama base URLs + key via env-file secrets scopes (OLLAMA_BASE_URL, OLLAMA_API_KEY); DDG keyless fallback = html.duckduckgo.com/html conservative scrape (D-011/D-012)
+- Integration: openapi-typescript + openapi-fetch → frontend/src/lib/api/generated, bound behind ApiClient; RESEARCHX_API_MODE=mock|live, mock default (D-013/D-020)
+- Transport/trust: sse-starlette SSE + pydantic typed event bus (D-014); difflib quote anchoring ≥ 0.85 (D-015); HTTP liveness live/stale/dead (D-016); JSON durable state, atomic rewrite per transition (D-017)
+- Run termination: pipeline ships P1..P4 + P5 final patch, then HALTS at the owner approval gate before milestone → main (merge_to_main hook, v0.1 precedent); no deploys without owner directive (D-018/D-019)

.ciagent/REQUIREMENTS.md

@@ -73,6 +73,13 @@
 - **REQ-33**: Monorepo: uv-managed backend (ruff, mypy, pytest) + Next.js frontend (ESLint, strict TS, Vitest); one-command install/dev
 - **REQ-34**: Full export round-trip: report + ledger + citations survive as real links
 
+### Clarified constraints (v0.2 P0 clarify — D-007..D-020)
+- **D-007/D-008**: backend/ src-layout package `researchx` (config, methodologies, adapters, engine, evidence, trust, api); uv + managed Python 3.12
+- **D-009/D-010**: backend 127.0.0.1:8000, CORS localhost:3000; run IDs 8-char slugs; runs/<id>/ storage layout
+- **D-011/D-012**: model/search endpoints + keys resolve from env-file secrets scopes; DDG keyless fallback via html.duckduckgo.com/html scrape
+- **D-013/D-020**: openapi-typescript + openapi-fetch generated client bound behind ApiClient; RESEARCHX_API_MODE=mock|live, mock default until P3
+- **D-014..D-017**: sse-starlette SSE + pydantic event bus; difflib quote anchoring ≥ 0.85; HTTP liveness live/stale/dead; JSON durable state atomically rewritten per transition
+
 ## V2 (Post-MVP backlog)
 
 ### Methodology Catalog Extension

.ciagent/RESEARCH-v02.md

@@ -0,0 +1,140 @@
+# Research — v0.2 MVP (Phase 0)
+
+## Run: 2026-09-27 (stage: research)
+
+Phase-0 research findings for milestone v0.2 (MVP): FastAPI backend, custom asyncio engine, adapter layer, trust loop, OpenAPI client integration. Each topic records concrete recommendations and pitfalls that PLAN consumes.
+
+## 1. Backend foundation (uv + FastAPI)
+
+**Recommendation:**
+- uv (>= 0.4) with `backend/pyproject.toml`, src-layout: `backend/src/researchx/__init__.py`, `backend/src/researchx/{config,methodologies,adapters,engine,evidence,trust,api}/__init__.py`
+- `[project] name = "researchx"`, `requires-python = ">=3.12"`; deps: `fastapi>=0.115,<0.116`, `pydantic>=2.8,<3`, `uvicorn>=0.30,<1`, `sse-starlette>=2.1,<3`, `httpx>=0.27,<1`
+- Dev group (`uv sync --group dev` or `[dependency-groups]`): `ruff>=0.6`, `mypy>=1.11`, `pytest>=8`, `pytest-asyncio>=0.23`
+- `[build-system] hatchling`; `[tool.hatch.build.targets.wheel] packages = ["src/researchx"]` — src-layout pitfall: without the explicit packages key, uv/hatch builds fail or ship an empty wheel
+- Dev run: `cd backend && uv run uvicorn researchx.api.app:app --reload --port 8000`; one-command from root documented in README
+- mypy strict on `src/`: `[tool.mypy] strict = true, mypy_path = "src"`; ruff: line-length 100, target py312
+
+**Pitfalls:**
+- `uv run` resolves the project venv automatically — never `pip install` into it
+- pytest needs `pythonpath = ["src"]` in `[tool.pytest.ini_options]` or an editable install (`uv sync` does this) — tests import `researchx.*` directly
+- pytest-asyncio: use `asyncio_mode = "auto"` and `loop_scope = "function"` (the old `event_loop` fixture is removed in recent versions)
+
+## 2. Ollama OpenAI-compatible endpoints
+
+**Recommendation:**
+- Cloud: `https://ollama.com/v1` with `Authorization: Bearer <OLLAMA_API_KEY>`; local fallback `http://localhost:11434/v1` keyless
+- Chat: POST `/chat/completions` (OpenAI shape: messages, model, temperature; response choices[0].message.content)
+- Probe: GET `/models` → data[].id; capability check via a tiny structured-completion smoke test at connect time
+- Context cap: `min(model_claim, 8192)` tokens; model claim unknown → 8192 flat; embedding batch 8
+- Planner/writer roles = two model names from settings (default: same model both roles)
+
+**Pitfalls:**
+- ollama.com/v1 is cloud-keyed — 401 on missing/invalid key → automatic local-fallback attempt, then surfaced error
+- Some served models don't support function calling/structured outputs → REQ-12 warning path: detect via smoke-test failure, warn in UI, degrade to plain chat + prompt-embedded JSON contract
+- Model names are server-specific (`q4` suffixes etc.) — settings must store the exact served name; probe lists what's actually available
+
+## 3. Search adapters
+
+**Recommendation:**
+- Tavily: POST `https://api.tavily.com/search`, JSON `{"api_key": key, "query": q, "search_depth": "basic"|"advanced", "max_results": n, "include_answer": false}` → `results[]: {title, url, content, score}`; timeouts 10s
+- DuckDuckGo keyless fallback: POST `https://html.duckduckgo.com/html/?q=<urlencoded>` with a plain httpx client; parse anchors `a.result__a` (href → URL, text → title) and `a.result__snippet` from the result list; conservative: max 8 results, no retries beyond one backoff, user-agent string honest
+- Adapter interface: `async search(query, max_results) -> list[SearchResult]`; registry selects Tavily when TAVILY_API_KEY present, else DDG
+
+**Pitfalls:**
+- DDG html rate-limits aggressively — the fallback is best-effort; on 403/timeout return partial/empty with a surfaced warning, never hang the engine
+- Tavily's `content` is already a snippet — evidence extraction still fetches the live page (visited-only constraint requires the visit)
+- Never put the API key in a query string or log line
+
+## 4. FastAPI SSE + asyncio durability
+
+**Recommendation:**
+- `sse-starlette` EventSourceResponse fed by a per-run `asyncio.Queue`; pydantic event models with a discriminated union on `type` (run_started, query_fired, source_visited, passage_extracted, state_changed, run_done, run_error)
+- EventSourceResponse generator: `async for event in queue` → `{"event": <type>, "data": <model_dump_json>}`; send on connect a `state_changed` replay of current persisted state
+- Client disconnect: wrap the generator in try/finally that cancels only the SSE subscription (never the run); runs keep going when browsers disconnect
+- Backpressure: unbounded queue per run is acceptable single-user; cap at 1000 with drop-oldest `state_changed` coalescing if needed
+
+**Pitfalls:**
+- No blocking I/O in the response generator — all fetches via httpx.AsyncClient
+- uvicorn single worker; multiple workers would break in-memory run registry — document single-user explicitly
+- On reconnect (Last-Event-ID unused in MVP) → replay current state + live events onward; full event log persisted in the run dir anyway
+
+## 5. Durable state machine patterns
+
+**Recommendation:**
+- `runs/<id>/state.json`: `{run_id, state, dial_values, plan, question, created_at, updated_at, cursor}` — rewritten atomically after every transition: write `.tmp`, `os.replace`
+- Transitions only at method boundaries of the state machine; the cursor records depth-loop position for resume
+- Pause = asyncio.Event cleared; cancel = task.cancel() + terminal CANCELLED state persisted; resume on restart = state file read, EventBus rebuilt, loop re-entered at cursor
+- pytest-asyncio: `asyncio_mode = "auto"`; tests construct the engine with fake adapters and `await engine.run()` directly
+
+**Pitfalls:**
+- Never swallow CancelledError — re-raise after persisting the cancel state
+- Shield the state write: `with contextlib.suppress(asyncio.CancelledError): await asyncio.shield(save())` then re-raise
+- Torn reads: only ever `os.replace` (atomic on same filesystem); never append — state is a snapshot, trace is a separate append-only file
+
+## 5b. Testing fakes (REQ-31)
+
+**Recommendation:**
+- FakeModelAdapter: canned planner (sub-questions from a fixture), canned writer (deterministic report citing fixture passage IDs) — zero API keys
+- FakeSearchAdapter: fixture corpus of 5-8 pages with overlapping passages; deterministic ordering
+- Engine tests drive every transition, depth loop, pause/resume mid-depth-loop, cancel, and adversarial writer outputs
+
+**Pitfalls:**
+- Fakes must implement the full adapter interface (no stub methods) — verify layer asserts interface conformance
+- Keep fixtures small and unicode-diverse (quote anchoring edge cases)
+
+## 6. §6. Quote anchoring + liveness
+
+**Recommendation:**
+- Normalize (unicode NFC → casefold → whitespace collapse) both quote and passage; exact-substring short-circuit; else difflib SequenceMatcher ratio ≥ 0.85
+- Ledger entry: `{url, visited_at, passages: [{id, quote}], claims: [claim_ids], health, authority_tier}`
+- Liveness: single GET with redirect-follow (httpx, 10s timeout): 2xx live; 3xx loop/parked-domain or content-gone markers → stale; 4xx/5xx/timeout/unresolvable → dead
+- ≥99% liveness gate: shipped report citations must pass liveness at export time; failures listed in the verification checklist
+
+**Pitlingfalls:**
+- SequenceMatcher on long passages is O(n²)-ish — anchor per-passage (passages are ≤ ~500 chars), not per-document
+- Fuzzy matches near threshold (0.80-0.90) flagged in the ledger as `weak_match` for transparency
+
+**Pitfalls:** (corrected)
+- SequenceMatcher cost is quadratic-ish — always match quote vs its claimed passage only
+- Near-threshold (0.80–0.90) matches flagged `weak_match` in the ledger — surfaced, not silently accepted
+
+## 7. OpenAPI client generation
+
+**Recommendation:**
+- `openapi-typescript@^7` (types) + `openapi-fetch@^0.13` (typed fetch client), generated into `frontend/src/lib/api/generated/`
+- Regen: `pnpm dlx openapi-typescript http://127.0.0.1:8000/openapi.json -o frontend/src/lib/api/generated/schema.d.ts` — needs the backend running, or read a committed `openapi.json` snapshot in CI
+- Binding: a thin `GeneratedApiClient` implements the existing ApiClient interface by delegating to openapi-fetch with baseURL from NEXT_PUBLIC_API_BASE_URL; components never import it directly — only the boundary file does
+- RESEARCHX_API_MODE=mock|live env flag selects the binding at boundary initialization; mock stays default
+
+**Pitfalls:**
+- FastAPI operation-id stability: route order and function names determine ids — fix function names early; regen discipline = regenerate only from a committed snapshot
+- FastAPI's default unions (None | X) — openapi-typescript emits optional/nullable types that must be handled at the boundary, not in components
+
+## 8. Monorepo ergonomics
+
+**Recommendation:**
+- Root README one-command story: `uv sync` (backend) + `corepack pnpm install` (frontend); dev: `uv run uvicorn ...` + `corepack pnpm dev`
+- Backend gates: `uv run ruff check src tests`, `uv run mypy src`, `uv run pytest` (all via `uv run` from backend/)
+- Frontend gates carry over from v0.1 unchanged: `pnpm typecheck`, `pnpm lint`, `pnpm test`, `pnpm build`
+- Repo-root package.json is NOT created (frontend is the only JS package); document commands in README instead
+
+**Pitfalls:**
+- pnpm via corepack (packageManager field pins pnpm@12.6.0) — direct pnpm may be absent; always `corepack pnpm`
+- openapi.json snapshot committed for reproducible client regen; regenerate the TS client when the snapshot changes
+
+## Research Conclusions
+
+1. Backend = uv + src-layout `researchx` in backend/, pyproject with hatchling `packages=["src/researchx"]`, deps fastapi/pydantic/uvicorn/sse-starlette/httpx, dev ruff/mypy/pytest/pytest-asyncio — one-command via `uv sync && uv run uvicorn researchx.api.app:app`.
+2. All I/O lives in adapters; engine imports no vendor SDKs (httpx only inside adapters).
+3. Ollama cloud `https://ollama.com/v1` (Bearer) → local `http://localhost:11434/v1` keyless fallback on 401/connection failure; probe via GET /models + structured-output smoke test; context cap min(claim, 8192), embed batch 8.
+4. REQ-12 structured-output warning: detect via smoke test; degrade to prompt-embedded JSON contract + UI warning — never fail cryptically.
+5. Tavily POST api.tavily.com/search with api_key in JSON body; DDG fallback scrapes html.duckduckgo.com/html anchors conservatively (max 8, one backoff, surfaced warnings on rate-limit).
+6. SSE = sse-starlette EventSourceResponse + per-run asyncio.Queue + pydantic discriminated-union event types; state replay on connect; single uvicorn worker (single-user).
+7. Durable state = runs/<id>/state.json, atomic tmp+os.replace per transition, cursor for depth-loop resume; trace is a separate append-only file; shielded state writes; never swallow CancelledError.
+8. Quote anchoring = normalize + exact-substring short-circuit + SequenceMatcher ≥ 0.85 per-passage; near-threshold flagged weak_match.
+9. Liveness = redirect-following GET, 10s: 2xx live / redirect-loop or content-gone stale / 4xx-5xx-timeout dead; ≥99% citation liveness gate at export.
+10. Fake adapters (REQ-31) implement the full adapter interface with canned planner/writer + fixture corpus — enables the entire engine + trust test suite with zero keys.
+11. Client gen = openapi-typescript@^7 + openapi-fetch@^0.13 from a committed openapi.json snapshot; GeneratedApiClient binds behind the ApiClient interface; RESEARCHX_API_MODE=mock|live selects binding; mock default.
+12. Monorepo gates: backend `uv run ruff check`, `uv run mypy`, `uv run pytest`; frontend v0.1 gates unchanged; no root package.json — commands documented in README.
+13. Config/status endpoints surface probe results + adapter status (REQ-25 GET /api/config) — plan the schema early so the settings surface stays honest.
+14. All decisions D-007..D-020 confirmed workable; refinements: hatchling packages key (new), openapi.json snapshot discipline (new), single-worker uvicorn note (new), structured-output smoke-test detection pattern (new) — folded into PLAN as constraints.

.ciagent/ROADMAP.md

@@ -75,37 +75,42 @@ prototype release is **v0.1.8** (final phase patch). Milestone branch
 merged to main and deleted — tags v0.1.0–v0.1.8 preserve the full
 history. Next milestone: v0.2 MVP (unblocked).
 
-## Milestone v0.2 — MVP (feature) — BLOCKED until prototype approval
+## Milestone v0.2 — MVP (feature) — UNBLOCKED (prototype approved 2026-09-27)
 
-Phases renumbered from the original v1.0 plan (1-based within the milestone):
+Phases renumbered from the original v1.0 plan (1-based within the milestone). Tags run on the v0.2.x line; MAJOR stays 0.
 
 ### Phase 0 — Pre-Execution (v0.2)
-- **Description**: Milestone pre-execution re-run: PLAN.md refresh against approved prototype decisions (layout learnings, API shape implied by the ApiClient interface), research on any gaps surfaced by approval feedback.
-- **Status**: blocked (gate: v0.1.4)
+- **Description**: Milestone pre-execution: SPECIFY (spec validated for v0.2), CLARIFY (D-007..D-020: backend layout, uv+Python 3.12, ports/run-IDs, DDG fallback, openapi-typescript client, SSE+pydantic events, difflib anchoring, liveness rules, durable JSON state, owner-gate halt, no-deploy policy, RESEARCHX_API_MODE), RESEARCH (RESEARCH-v02.md — 8 topics, 14 conclusions, 4 D-refinements), PLAN (P1 vertical-slice plan), GRILL (mechanical nine-axis review), MVP/UX check.
+- **Requirements covered**: none (planning artifacts)
+- **Success criteria**: .ciagent/ files refreshed for v0.2; PLAN.md carries User-Facing Surface + Happy Path + UX Acceptance Criteria; PERSONAS.md v0.2 roster active; grill verdict recorded with binding decisions
+- **Depends on**: v0.1 approval (recorded)
+- **Status**: complete (PR #9 squash-merged to milestone/v0.2-mvp bbf80ce, tag v0.2.0, release created HTTP 201, phase branch deleted; grill Proceed 0.72 with G-001..G-010 promoted; MVP/UX PASS)
 
 ### Phase 1 — Methodology Framework + Adapter Layer
-- **Description**: Dial schema (12 dials, typed, safe defaults), methodology registry with Rapid Answer + Deep Report, adapter contracts (model/search/storage/memory/secrets) with local implementations, capability probing with conservative caps (8192 context, embedding batch 8, Ollama cloud-first + local fallback), fake model/search adapters.
-- **Requirements covered**: REQ-01..06, REQ-08..11, REQ-31
-- **Status**: blocked
+- **Description**: Dial schema (12 dials, typed, safe defaults), methodology registry with Rapid Answer + Deep Report, adapter contracts (model/search/storage/memory/secrets) with local implementations, capability probing with conservative caps (8192 context, embedding batch 8, Ollama cloud-first + local fallback), fake model/search adapters. Full task waves in PLAN.md.
+- **Requirements covered**: REQ-01..06, REQ-08..11, REQ-31 (REQ-07, REQ-12 ship in P2 per ROADMAP phase mapping — dial-level + warning contracts are proven here, live probing against real endpoints in P2)
+- **Success criteria**: uv one-command backend; gates green zero-API-key; registry resolves slugs; dial snapshot round-trips; fakes drive full interface; degradation typed + honest
+- **Depends on**: 0
+- **Status**: next (in progress — task waves in PLAN.md)
 
 ### Phase 2 — Research Engine + Trust Loop
 - **Description**: Asyncio state machine with durable JSON state and pause/cancel/resume; plan approval gate; typed event bus → SSE; evidence store with stable passage IDs; trust loop (visited-only constraint, URL liveness pass, quote anchoring, citation ledger, verification checklist, confidence labels).
 - **Requirements covered**: REQ-07, REQ-12, REQ-13..24
-- **Status**: blocked
+- **Status**: blocked → next (sequential phases; unblock as each prior phase ships)
 
 ### Phase 3 — API Layer + Integration
 - **Description**: FastAPI routes (runs, methodologies, lifecycle, SSE events, config status); OpenAPI-generated typed client; **swap MockApiClient → generated client** (the ApiClient interface absorbs any prototype-era API drift); ETA/cost heuristics for methodology cards.
 - **Requirements covered**: REQ-25, REQ-26
-- **Status**: blocked
+- **Status**: blocked → next (sequential phases; unblock as each prior phase ships)
 
 ### Phase 4 — Hardening + Adversarial Suite + E2E
 - **Description**: Adversarial test suite (hallucinated-URL writer, quote-anchor mismatch, pause/resume mid-depth-loop), E2E happy-path (Playwright), monorepo tooling polish (one-command install/dev, lint/typecheck/test green).
 - **Requirements covered**: REQ-17, REQ-32, REQ-33, REQ-34
-- **Status**: blocked
+- **Status**: blocked → next (sequential phases; unblock as each prior phase ships)
 
 ### Phase 5 — Final Review + Ship (FINAL)
 - **Description**: Review + audit + milestone ship; final patch tag IS the MVP release. MAJOR stays 0 — the MVP ships as a 0.x release. v1.0.0 comes only after an owner-approved release decision.
-- **Status**: blocked
+- **Status**: blocked → next (sequential phases; unblock as each prior phase ships)
 
 ## Milestone Releases
 - **v0.1.4 = extended-prototype candidate** (superseded by the P5/P6 extension cycle)

README.md

@@ -2,20 +2,44 @@
 
 A deep-research studio where you bring your own model, storage, and memory; choose a research methodology before a single query fires; and every claim in the final report is anchored to a visited, verified, quotable source.
 
-**Status: prototype (milestone v0.1)** — UI/UX with mock data. No backend, no API keys, no network calls.
+**Status: MVP in development (milestone v0.2)** — the approved v0.1 prototype frontend (mock-backed) plus the FastAPI backend, research engine, adapter layer, and trust loop. The frontend runs standalone on mock data; live backend mode arrives with v0.2 phase 3.
 
 ## Quickstart
 
 ```bash
+# frontend (prototype, mock-backed — works today)
 cd frontend
-pnpm install
-pnpm dev
+corepack pnpm install
+corepack pnpm dev          # http://localhost:3000
+
+# backend (MVP — uv manages Python 3.12 and the venv)
+cd backend
+uv sync                    # installs deps + editable researchx package
+uv run uvicorn researchx.api.app:app --reload --port 8000
+uv run pytest              # full suite, zero API keys
 ```
 
-Open http://localhost:3000 — you land on **Ask**, inside the app shell (left sidebar, top bar with ⌘K search and your avatar). Type a question, click **Research this**, pick a methodology on **Choose** (Deep Report is the recommended default), and press **Start research**.
-
 Three clicks from cold start to initiated research.
 
+## Monorepo command map
+
+| Layer | Install | Dev | Gates |
+|---|---|---|---|
+| backend (uv, Python 3.12) | `uv sync` | `uv run uvicorn researchx.api.app:app --reload --port 8000` | `uv run ruff check src tests` · `uv run mypy src` · `uv run pytest` |
+| frontend (pnpm 12.6) | `corepack pnpm install` | `corepack pnpm dev` | `corepack pnpm typecheck` · `corepack pnpm lint` · `corepack pnpm test` · `corepack pnpm build` |
+
+## Adapter configuration (v0.2)
+
+All keys resolve from env files only (`.env`, `.env.secrets`, `.env.*` — never the shell environment, never git):
+
+| Variable | Scope | Used by |
+|---|---|---|
+| `OLLAMA_API_KEY` | model (cloud) | Ollama cloud endpoint `https://ollama.com/v1`; absent/keyless falls back to `http://localhost:11434/v1` automatically |
+| `OLLAMA_BASE_URL` | model | Overrides the default cloud base URL |
+| `TAVILY_API_KEY` | search | Tavily default search; absent falls back to the keyless DuckDuckGo adapter (degraded mode — surfaced in the run trace) |
+
+The test suite needs **no** keys: fake model/search adapters (REQ-31) drive every engine test.
+
 ## What's in the prototype
 
 | Screen | What it does |

backend/.gitignore

@@ -0,0 +1,5 @@
+.venv/
+__pycache__/
+.pytest_cache/
+.ruff_cache/
+.mypy_cache/

backend/.python-version

@@ -0,0 +1 @@
+3.12

backend/pyproject.toml

@@ -0,0 +1,44 @@
+[project]
+name = "researchx"
+version = "0.2.0"
+description = "ResearchX — methodology-first deep research studio"
+requires-python = ">=3.12"
+dependencies = [
+    "fastapi>=0.115,<0.116",
+    "pydantic>=2.8,<3",
+    "uvicorn>=0.30,<1",
+    "sse-starlette>=2.1,<3",
+    "httpx>=0.27,<1",
+]
+
+[dependency-groups]
+dev = [
+    "ruff>=0.6",
+    "mypy>=1.11",
+    "pytest>=8",
+    "pytest-asyncio>=0.23",
+]
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[tool.hatch.build.targets.wheel]
+packages = ["src/researchx"]
+
+[tool.ruff]
+line-length = 100
+target-version = "py312"
+
+[tool.ruff.lint]
+extend-select = ["I", "UP"]
+
+[tool.mypy]
+strict = true
+mypy_path = "src"
+python_version = "3.12"
+
+[tool.pytest.ini_options]
+pythonpath = ["src"]
+asyncio_mode = "auto"
+testpaths = ["tests"]

backend/src/researchx/adapters/capability_probe.py

@@ -0,0 +1,47 @@
+import json
+
+import httpx
+
+from researchx.adapters.model import ModelAdapter
+from researchx.adapters.ollama import OllamaModelAdapter
+from researchx.adapters.probe import (
+    DEFAULT_EMBEDDING_BATCH,
+    CapabilityProbe,
+    cap_context_window,
+    structured_output_warning,
+)
+from researchx.adapters.types import ModelMessage
+
+
+async def probe_model_adapter(adapter: OllamaModelAdapter) -> CapabilityProbe:
+    models = await adapter.list_models()
+    smoke_ok = await _structured_output_smoke_test(adapter)
+    writer = adapter.roles().writer
+    warning = structured_output_warning(smoke_ok, writer)
+    return CapabilityProbe(
+        endpoint=adapter.active_base_url,
+        models=models,
+        context_window=cap_context_window(None),
+        embedding_batch=DEFAULT_EMBEDDING_BATCH,
+        structured_outputs_supported=smoke_ok,
+        structured_output_warning=warning,
+        fallback_reason=adapter.last_fallback_reason,
+    )
+
+
+async def _structured_output_smoke_test(adapter: ModelAdapter) -> bool:
+    probe_messages = [
+        ModelMessage(
+            role="user",
+            content='Return a JSON object with exactly one key "ok" set to true. No other text.',
+        )
+    ]
+    try:
+        result = await adapter.chat(probe_messages, model=adapter.roles().writer, json_mode=True)
+    except (httpx.HTTPError, httpx.HTTPStatusError, ValueError, KeyError):
+        return False
+    try:
+        parsed = json.loads(result.content.strip())
+    except json.JSONDecodeError:
+        return False
+    return isinstance(parsed, dict) and parsed.get("ok") is True

backend/src/researchx/adapters/duckduckgo.py

@@ -0,0 +1,119 @@
+import re
+from datetime import UTC, datetime
+from html import unescape
+from urllib.parse import parse_qs, unquote, urlparse
+
+import httpx
+
+from researchx.adapters.secrets import SecretsProvider
+from researchx.adapters.tavily import TavilySearchAdapter, extract_text, extract_title
+from researchx.adapters.types import PageContent, SearchResult
+
+_DDG_URL = "https://html.duckduckgo.com/html"
+_SEARCH_TIMEOUT = 10.0
+_FETCH_TIMEOUT = 10.0
+_BACKOFF_SECONDS = 1.0
+_USER_AGENT = "researchx/0.2 (local research studio)"
+_RESULT_RE = re.compile(
+    r'<a[^>]+class="[^"]*result__a[^"]*"[^>]+href="([^"]+)"[^>]*>(.*?)</a>',
+    re.DOTALL,
+)
+_SNIPPET_RE = re.compile(r'<a[^>]+class="[^"]*result__snippet[^"]*"[^>]*>(.*?)</a>', re.DOTALL)
+_TAG_RE = re.compile(r"<[^>]+>")
+
+
+class DuckDuckGoSearchAdapter:
+    def __init__(self) -> None:
+        self._last_degradation: str | None = None
+
+    async def search(self, query: str, *, max_results: int = 5) -> list[SearchResult]:
+        results = await self._attempt_search(query, max_results)
+        if results is None:
+            self._last_degradation = "duckduckgo rate-limited or unreachable; returning partial results"
+            return []
+        self._last_degradation = None
+        return results
+
+    async def _attempt_search(self, query: str, max_results: int) -> list[SearchResult] | None:
+        import asyncio
+
+        params = {"q": query}
+        headers = {"User-Agent": _USER_AGENT}
+        for attempt in range(2):
+            try:
+                async with httpx.AsyncClient(timeout=_SEARCH_TIMEOUT) as client:
+                    response = await client.post(_DDG_URL, params=params, headers=headers)
+                    if response.status_code in (403, 429):
+                        if attempt == 0:
+                            await asyncio.sleep(_BACKOFF_SECONDS)
+                            continue
+                        return None
+                    response.raise_for_status()
+                    return self._parse_results(response.text, max_results)
+            except httpx.HTTPError:
+                if attempt == 0:
+                    await asyncio.sleep(_BACKOFF_SECONDS)
+                    continue
+                return None
+        return None
+
+    def _parse_results(self, html: str, max_results: int) -> list[SearchResult]:
+        anchors = _RESULT_RE.findall(html)
+        snippets = [self._strip(s) for s in _SNIPPET_RE.findall(html)]
+        results: list[SearchResult] = []
+        for index, (href, title_html) in enumerate(anchors):
+            url = self._normalize_href(href)
+            if not url:
+                continue
+            snippet = snippets[index] if index < len(snippets) else ""
+            results.append(
+                SearchResult(
+                    title=self._strip(title_html),
+                    url=url,
+                    snippet=snippet,
+                )
+            )
+            if len(results) >= max_results:
+                break
+        return results
+
+    def _normalize_href(self, href: str) -> str:
+        decoded = unescape(href)
+        parsed = urlparse(decoded)
+        if parsed.path.startswith("//duckduckgo.com/l/") or parsed.netloc == "duckduckgo.com":
+            target = parse_qs(parsed.query).get("uddg", [""])[0]
+            return unquote(target)
+        if decoded.startswith("http"):
+            return decoded
+        return ""
+
+    def _strip(self, html: str) -> str:
+        text = _TAG_RE.sub("", html)
+        return re.sub(r"\s+", " ", text).strip()
+
+    async def fetch(self, url: str) -> PageContent:
+        async with httpx.AsyncClient(
+            timeout=_FETCH_TIMEOUT,
+            follow_redirects=True,
+            headers={"User-Agent": _USER_AGENT},
+        ) as client:
+            response = await client.get(url)
+            response.raise_for_status()
+        return PageContent(
+            url=url,
+            title=extract_title(response.text),
+            text=extract_text(response.text),
+            fetched_at=datetime.now(UTC),
+        )
+
+    @property
+    def last_degradation(self) -> str | None:
+        return self._last_degradation
+
+
+def resolve_search_adapter(
+    secrets: SecretsProvider,
+) -> tuple[TavilySearchAdapter | DuckDuckGoSearchAdapter, str]:
+    if secrets.resolve("TAVILY_API_KEY"):
+        return TavilySearchAdapter(secrets), "tavily"
+    return DuckDuckGoSearchAdapter(), "duckduckgo-keyless"

backend/src/researchx/adapters/fakes.py

@@ -0,0 +1,165 @@
+from datetime import UTC, datetime
+
+from researchx.adapters.model import ModelRoles
+from researchx.adapters.types import (
+    AdapterError,
+    ChatResult,
+    ModelMessage,
+    PageContent,
+    SearchResult,
+)
+
+
+def _now() -> datetime:
+    return datetime.now(UTC)
+
+
+class FakeModelAdapter:
+    def __init__(self, canned: list[ChatResult]) -> None:
+        self._canned = list(canned)
+        self._json_mode_calls: list[bool] = []
+        self.roles_value = ModelRoles(planner="fake-planner", writer="fake-writer")
+
+    async def chat(
+        self,
+        messages: list[ModelMessage],
+        *,
+        model: str,
+        temperature: float = 0.2,
+        json_mode: bool = False,
+    ) -> ChatResult:
+        del messages, temperature
+        self._json_mode_calls.append(json_mode)
+        if not self._canned:
+            raise AdapterError(f"no canned response for model {model}")
+        return self._canned.pop(0)
+
+    async def list_models(self) -> list[str]:
+        return ["fake-model"]
+
+    def roles(self) -> ModelRoles:
+        return self.roles_value
+
+    @property
+    def last_json_mode(self) -> bool | None:
+        return self._json_mode_calls[-1] if self._json_mode_calls else None
+
+
+class FakeSearchAdapter:
+    def __init__(self, corpus: list[PageContent]) -> None:
+        self._corpus = list(corpus)
+        self._by_url = {page.url: page for page in corpus}
+
+    async def search(self, query: str, *, max_results: int = 5) -> list[SearchResult]:
+        terms = [t.lower() for t in query.split() if t]
+        results: list[SearchResult] = []
+        for page in self._corpus:
+            haystack = f"{page.title}\n{page.text}".lower()
+            if all(t in haystack for t in terms):
+                snippet = page.text[:200]
+                results.append(SearchResult(title=page.title, url=page.url, snippet=snippet))
+            if len(results) >= max_results:
+                break
+        return results
+
+    async def fetch(self, url: str) -> PageContent:
+        page = self._by_url.get(url)
+        if page is None:
+            raise AdapterError(f"unknown url: {url}")
+        return page.model_copy(update={"fetched_at": _now()})
+
+
+SHARED_SENTENCE = (
+    "The verification pass re-anchored every quoted claim to its stored passage "
+    "before the report was allowed to ship."
+)
+
+
+def corpus() -> list[PageContent]:
+    stamp = _now()
+    pages = [
+        PageContent(
+            url="https://example.org/verification",
+            title="Verification passes in research pipelines",
+            text=(
+                "Deep research pipelines fail when citations are decorative. "
+                f"{SHARED_SENTENCE} The pipeline treats every quote as a claim "
+                "about evidence, not a claim about the world.\n\n"
+                "Verification therefore runs twice: once at generation time and "
+                "once at export time — liveness is rechecked, anchors are "
+                "re-matched, and the ledger records the outcome."
+            ),
+            fetched_at=stamp,
+        ),
+        PageContent(
+            url="https://example.org/anchoring",
+            title="Quote anchoring and auditability",
+            text=(
+                f"{SHARED_SENTENCE} Anchoring is the mechanism that makes this "
+                "auditability real: each claim carries a fuzzy-matched pointer "
+                "back to the exact stored passage — d’abord normalisé, puis "
+                "comparé. 近似匹配的阈值设定为 0.85.\n\n"
+                "A claim without an anchor is not a finding; it is a hypothesis "
+                "with better typography."
+            ),
+            fetched_at=stamp,
+        ),
+        PageContent(
+            url="https://example.org/ollama",
+            title="OpenAI-compatible endpoints on Ollama",
+            text=(
+                "Ollama exposes an OpenAI-compatible surface at /v1: chat "
+                "completions accept the standard message array, and model "
+                "listing works via GET /v1/models. Cloud deployments require "
+                "a bearer key; localhost deployments are keyless by default.\n\n"
+                "Capability probing stays conservative: cap context at the "
+                "minimum of the model claim and 8192 tokens, and batch "
+                "embeddings at 8."
+            ),
+            fetched_at=stamp,
+        ),
+        PageContent(
+            url="https://example.org/search-routing",
+            title="Search routing across keyless and keyed providers",
+            text=(
+                "A keyed provider (Tavily) is the default route; a keyless "
+                "fallback (DuckDuckGo HTML) degrades gracefully under rate "
+                "limiting. The fallback is a degraded mode, not a second "
+                "source — its warnings surface in the run trace.\n\n"
+                "Routing decisions belong to the methodology dials, never to "
+                "the writer."
+            ),
+            fetched_at=stamp,
+        ),
+        PageContent(
+            url="https://example.org/state-machines",
+            title="Durable state machines for research engines",
+            text=(
+                "A research engine survives restarts by persisting state after "
+                "every transition: an atomic tmp-plus-replace write leaves no "
+                "torn files, and a cursor records the depth-loop position.\n\n"
+                "Pause clears an asyncio event; cancel persists a terminal "
+                "state; resume re-enters the loop at the recorded cursor. "
+                "CancelledError is re-raised after the write — never swallowed."
+            ),
+            fetched_at=stamp,
+        ),
+        PageContent(
+            url="https://example.org/methodology",
+            title="Methodology-first research selection",
+            text=(
+                "Choosing a methodology before a single query fires converts "
+                "ad-hoc prompt crafting into a structured, reproducible "
+                "decision. Dials — breadth, depth, citation rigor, "
+                "verification passes — resolve into a snapshot that persists "
+                "with every run.\n\n"
+                "The methodology registry ships Rapid Answer for memo-shaped "
+                "answers and Deep Report for executive reports with full "
+                "verification."
+            ),
+            fetched_at=stamp,
+        ),
+    ]
+    return pages
+
+CORPUS = corpus()

backend/src/researchx/adapters/local_storage.py

@@ -0,0 +1,61 @@
+import asyncio
+import os
+import re
+import secrets as secrets_module
+from pathlib import Path
+
+from researchx.adapters.types import AdapterError
+
+_RUN_ID_ALPHABET = "abcdefghjkmnpqrstuvwxyz23456789"
+_RUN_ID_RE = re.compile(r"^[a-z0-9]{8}$")
+_ARTIFACT_NAME_RE = re.compile(r"^[A-Za-z0-9][A-Za-z0-9._-]*$")
+
+
+def generate_run_id() -> str:
+    return "".join(secrets_module.choice(_RUN_ID_ALPHABET) for _ in range(8))
+
+
+def _validate_run_id(run_id: str) -> None:
+    if not _RUN_ID_RE.match(run_id):
+        raise AdapterError("invalid run id")
+
+
+def _validate_artifact_name(name: str) -> None:
+    if not _ARTIFACT_NAME_RE.match(name) or Path(name).name != name:
+        raise AdapterError("invalid artifact name")
+
+
+class LocalStorageAdapter:
+    def __init__(self, base_dir: Path) -> None:
+        self._base_dir = base_dir
+
+    def run_dir(self, run_id: str) -> Path:
+        _validate_run_id(run_id)
+        return self._base_dir / "runs" / run_id
+
+    async def write_run_artifact(self, run_id: str, name: str, content: str) -> Path:
+        _validate_artifact_name(name)
+        target = self.run_dir(run_id) / name
+        target.parent.mkdir(parents=True, exist_ok=True)
+        tmp_path = target.with_name(f"{target.name}.{secrets_module.token_hex(4)}.tmp")
+
+        def _write_atomic() -> None:
+            with open(tmp_path, "w", encoding="utf-8") as handle:
+                handle.write(content)
+                handle.flush()
+                os.fsync(handle.fileno())
+            tmp_path.replace(target)
+
+        try:
+            await asyncio.to_thread(_write_atomic)
+        finally:
+            tmp_path.unlink(missing_ok=True)
+        return target
+
+    async def read_run_artifact(self, run_id: str, name: str) -> str:
+        _validate_artifact_name(name)
+        target = self.run_dir(run_id) / name
+        try:
+            return target.read_text(encoding="utf-8")
+        except FileNotFoundError as exc:
+            raise AdapterError(f"artifact not found: runs/{run_id}/{name}") from exc

backend/src/researchx/adapters/memory.py

@@ -0,0 +1,8 @@
+from typing import Protocol, runtime_checkable
+
+
+@runtime_checkable
+class MemoryAdapter(Protocol):
+    async def remember(self, scope: str, key: str, value: str) -> None: ...
+
+    async def recall(self, scope: str, key: str) -> str | None: ...

backend/src/researchx/adapters/model.py

@@ -0,0 +1,26 @@
+from typing import Protocol, runtime_checkable
+
+from pydantic import BaseModel
+
+from researchx.adapters.types import ChatResult, ModelMessage
+
+
+class ModelRoles(BaseModel):
+    planner: str
+    writer: str
+
+
+@runtime_checkable
+class ModelAdapter(Protocol):
+    async def chat(
+        self,
+        messages: list[ModelMessage],
+        *,
+        model: str,
+        temperature: float = 0.2,
+        json_mode: bool = False,
+    ) -> ChatResult: ...
+
+    async def list_models(self) -> list[str]: ...
+
+    def roles(self) -> ModelRoles: ...

backend/src/researchx/adapters/ollama.py

@@ -0,0 +1,116 @@
+from typing import Any
+
+import httpx
+
+from researchx.adapters.model import ModelRoles
+from researchx.adapters.secrets import EnvFileSecretsProvider
+from researchx.adapters.types import AdapterError, ChatResult, ModelMessage, Usage
+
+_DEFAULT_CLOUD_BASE = "https://ollama.com/v1"
+_DEFAULT_LOCAL_BASE = "http://localhost:11434/v1"
+_REQUEST_TIMEOUT = 60.0
+
+
+class OllamaModelAdapter:
+    def __init__(
+        self,
+        secrets: EnvFileSecretsProvider,
+        planner_model: str,
+        writer_model: str,
+        cloud_base_url: str | None = None,
+        local_base_url: str | None = None,
+    ) -> None:
+        self._secrets = secrets
+        self._roles = ModelRoles(planner=planner_model, writer=writer_model)
+        self._cloud_base = (cloud_base_url or secrets.resolve("OLLAMA_BASE_URL") or _DEFAULT_CLOUD_BASE).rstrip("/")
+        self._local_base = (local_base_url or _DEFAULT_LOCAL_BASE).rstrip("/")
+        self._active_base = self._cloud_base
+        self._api_key = secrets.resolve("OLLAMA_API_KEY")
+        self._last_fallback_reason: str | None = None
+
+    def _headers(self, base_url: str) -> dict[str, str]:
+        headers = {"Content-Type": "application/json"}
+        if base_url == self._cloud_base and self._api_key:
+            headers["Authorization"] = f"Bearer {self._api_key}"
+        return headers
+
+    async def _post_chat(
+        self,
+        base_url: str,
+        payload: dict[str, object],
+    ) -> dict[str, Any]:
+        async with httpx.AsyncClient(timeout=_REQUEST_TIMEOUT) as client:
+            response = await client.post(
+                f"{base_url}/chat/completions",
+                json=payload,
+                headers=self._headers(base_url),
+            )
+            try:
+                response.raise_for_status()
+            except httpx.HTTPError as exc:
+                raise AdapterError(f"chat request failed ({type(exc).__name__})") from exc
+            data: dict[str, Any] = response.json()
+            return data
+
+    async def chat(
+        self,
+        messages: list[ModelMessage],
+        *,
+        model: str,
+        temperature: float = 0.2,
+        json_mode: bool = False,
+    ) -> ChatResult:
+        payload: dict[str, object] = {
+            "model": model,
+            "messages": [m.model_dump() for m in messages],
+            "temperature": temperature,
+        }
+        if json_mode:
+            payload["response_format"] = {"type": "json_object"}
+        try:
+            data = await self._post_chat(self._active_base, payload)
+        except AdapterError as first_error:
+            if self._active_base == self._cloud_base:
+                self._last_fallback_reason = f"cloud endpoint failed: {type(first_error.__cause__).__name__ if first_error.__cause__ else 'Error'}"
+                self._active_base = self._local_base
+                data = await self._post_chat(self._local_base, payload)
+            else:
+                raise
+        choice = data["choices"][0]["message"]
+        raw_usage = data.get("usage") or {}
+        usage = Usage(
+            prompt_tokens=raw_usage.get("prompt_tokens"),
+            completion_tokens=raw_usage.get("completion_tokens"),
+        )
+        return ChatResult(content=choice["content"], model=model, usage=usage)
+
+    async def list_models(self) -> list[str]:
+        try:
+            async with httpx.AsyncClient(timeout=_REQUEST_TIMEOUT) as client:
+                response = await client.get(
+                    f"{self._active_base}/models",
+                    headers=self._headers(self._active_base),
+                )
+                try:
+                    response.raise_for_status()
+                except httpx.HTTPError as exc:
+                    raise AdapterError(f"models listing failed ({type(exc).__name__})") from exc
+                data: dict[str, Any] = response.json()
+            return [str(entry["id"]) for entry in data.get("data", [])]
+        except (AdapterError, httpx.HTTPError):
+            if self._active_base == self._cloud_base:
+                self._last_fallback_reason = "cloud models listing failed; using local"
+                self._active_base = self._local_base
+                return await self.list_models()
+            raise
+
+    def roles(self) -> ModelRoles:
+        return self._roles
+
+    @property
+    def active_base_url(self) -> str:
+        return self._active_base
+
+    @property
+    def last_fallback_reason(self) -> str | None:
+        return self._last_fallback_reason

backend/src/researchx/adapters/probe.py

@@ -0,0 +1,34 @@
+from pydantic import BaseModel
+
+DEFAULT_CONTEXT_CAP = 8192
+DEFAULT_EMBEDDING_BATCH = 8
+
+
+class CapabilityProbe(BaseModel):
+    endpoint: str
+    models: list[str]
+    context_window: int
+    embedding_batch: int
+    structured_outputs_supported: bool
+    structured_output_warning: str | None = None
+    fallback_reason: str | None = None
+
+    @property
+    def degraded(self) -> bool:
+        return self.structured_output_warning is not None or self.fallback_reason is not None
+
+
+def cap_context_window(model_claim: int | None) -> int:
+    if model_claim is None or model_claim <= 0:
+        return DEFAULT_CONTEXT_CAP
+    return min(model_claim, DEFAULT_CONTEXT_CAP)
+
+
+def structured_output_warning(supported: bool, model_name: str) -> str | None:
+    if supported:
+        return None
+    return (
+        f"Model '{model_name}' did not confirm structured-output (function-calling) support. "
+        "Methodologies needing structured outputs will degrade to a prompt-embedded JSON "
+        "contract — expect looser parsing, not a hard failure."
+    )

backend/src/researchx/adapters/search.py

@@ -0,0 +1,10 @@
+from typing import Protocol, runtime_checkable
+
+from researchx.adapters.types import PageContent, SearchResult
+
+
+@runtime_checkable
+class SearchAdapter(Protocol):
+    async def search(self, query: str, *, max_results: int = 5) -> list[SearchResult]: ...
+
+    async def fetch(self, url: str) -> PageContent: ...

backend/src/researchx/adapters/secrets.py

@@ -0,0 +1,32 @@
+from pathlib import Path
+from typing import Protocol, runtime_checkable
+
+
+@runtime_checkable
+class SecretsProvider(Protocol):
+    def resolve(self, name: str) -> str | None: ...
+
+
+def _parse_env_file(path: Path) -> dict[str, str]:
+    values: dict[str, str] = {}
+    for raw_line in path.read_text(encoding="utf-8").splitlines():
+        line = raw_line.strip()
+        if not line or line.startswith("#") or "=" not in line:
+            continue
+        key, _, value = line.partition("=")
+        values[key.strip()] = value.strip().strip("'\"")
+    return values
+
+
+class EnvFileSecretsProvider:
+    def __init__(self, paths: list[Path]) -> None:
+        self._paths = [p for p in paths if p.is_file()]
+        self._values: dict[str, str] = {}
+        for path in self._paths:
+            self._values.update(_parse_env_file(path))
+
+    def resolve(self, name: str) -> str | None:
+        return self._values.get(name)
+
+    def __repr__(self) -> str:
+        return f"EnvFileSecretsProvider(paths={[p.name for p in self._paths]})"

backend/src/researchx/adapters/storage.py

@@ -0,0 +1,11 @@
+from pathlib import Path
+from typing import Protocol, runtime_checkable
+
+
+@runtime_checkable
+class StorageAdapter(Protocol):
+    async def write_run_artifact(self, run_id: str, name: str, content: str) -> Path: ...
+
+    async def read_run_artifact(self, run_id: str, name: str) -> str: ...
+
+    def run_dir(self, run_id: str) -> Path: ...

backend/src/researchx/adapters/tavily.py

@@ -0,0 +1,70 @@
+import re
+from datetime import UTC, datetime
+
+import httpx
+
+from researchx.adapters.secrets import SecretsProvider
+from researchx.adapters.types import AdapterError, PageContent, SearchResult
+
+_TAVILY_URL = "https://api.tavily.com/search"
+_SEARCH_TIMEOUT = 10.0
+_FETCH_TIMEOUT = 10.0
+_USER_AGENT = "researchx/0.2 (local research studio)"
+_TITLE_RE = re.compile(r"<title[^>]*>(.*?)</title>", re.IGNORECASE | re.DOTALL)
+_BLOCK_RE = re.compile(r"<(script|style)[^>]*>.*?</\1>", re.IGNORECASE | re.DOTALL)
+_TAG_RE = re.compile(r"<[^>]+>")
+
+
+def extract_text(html: str) -> str:
+    text = _BLOCK_RE.sub(" ", html)
+    text = _TAG_RE.sub(" ", text)
+    text = re.sub(r"\s+", " ", text)
+    return text.strip()
+
+
+def extract_title(html: str) -> str:
+    match = _TITLE_RE.search(html)
+    return match.group(1).strip() if match else ""
+
+
+class TavilySearchAdapter:
+    def __init__(self, secrets: SecretsProvider) -> None:
+        self._api_key = secrets.resolve("TAVILY_API_KEY")
+        if not self._api_key:
+            raise AdapterError("TAVILY_API_KEY not present in secrets scope")
+
+    async def search(self, query: str, *, max_results: int = 5) -> list[SearchResult]:
+        payload = {
+            "api_key": self._api_key,
+            "query": query,
+            "search_depth": "basic",
+            "max_results": max_results,
+            "include_answer": False,
+        }
+        async with httpx.AsyncClient(timeout=_SEARCH_TIMEOUT) as client:
+            response = await client.post(_TAVILY_URL, json=payload)
+            response.raise_for_status()
+            data = response.json()
+        return [
+            SearchResult(
+                title=str(entry.get("title", "")),
+                url=str(entry.get("url", "")),
+                snippet=str(entry.get("content", "")),
+            )
+            for entry in data.get("results", [])
+        ][:max_results]
+
+    async def fetch(self, url: str) -> PageContent:
+        async with httpx.AsyncClient(
+            timeout=_FETCH_TIMEOUT,
+            follow_redirects=True,
+            headers={"User-Agent": _USER_AGENT},
+        ) as client:
+            response = await client.get(url)
+            response.raise_for_status()
+        return PageContent(
+            url=url,
+            title=extract_title(response.text),
+            text=extract_text(response.text),
+            fetched_at=datetime.now(UTC),
+        )

backend/src/researchx/adapters/types.py

@@ -0,0 +1,36 @@
+from datetime import datetime
+
+from pydantic import BaseModel
+
+
+class ModelMessage(BaseModel):
+    role: str
+    content: str
+
+
+class Usage(BaseModel):
+    prompt_tokens: int | None = None
+    completion_tokens: int | None = None
+
+
+class ChatResult(BaseModel):
+    content: str
+    model: str
+    usage: Usage | None = None
+
+
+class SearchResult(BaseModel):
+    title: str
+    url: str
+    snippet: str
+
+
+class PageContent(BaseModel):
+    url: str
+    title: str
+    text: str
+    fetched_at: datetime
+
+
+class AdapterError(Exception):
+    pass

backend/src/researchx/config/dials.py

@@ -0,0 +1,111 @@
+from types import MappingProxyType
+from typing import Literal
+
+from pydantic import BaseModel, Field
+
+SourceUniverse = Literal["web", "academic", "local", "web+academic"]
+SearchRouting = Literal["single", "adaptive", "academic-only"]
+QueryStrategy = Literal["fixed", "iterative", "decomposed"]
+QualityGates = Literal["none", "standard", "strict"]
+CitationRigor = Literal["per-claim", "per-section", "per-report"]
+SynthesisStyle = Literal["memo", "executive", "encyclopedic", "adversarial"]
+OutputStructure = Literal["brief", "report", "dossier"]
+MemoryScope = Literal["none", "project", "cross-project"]
+
+
+class DialDescriptor(BaseModel, frozen=True):
+    """UI display metadata for a single dial."""
+
+    name: str
+    label: str
+    description: str
+
+
+class Dials(BaseModel, frozen=True):
+    """The 12 methodology dials with safe defaults (REQ-01)."""
+
+    source_universe: SourceUniverse = "web"
+    search_routing: SearchRouting = "single"
+    query_strategy: QueryStrategy = "decomposed"
+    breadth: int = Field(default=2, ge=1, le=5)
+    depth: int = Field(default=1, ge=1, le=3)
+    quality_gates: QualityGates = "standard"
+    citation_rigor: CitationRigor = "per-claim"
+    verification_passes: int = Field(default=1, ge=0, le=3)
+    synthesis_style: SynthesisStyle = "memo"
+    output_structure: OutputStructure = "brief"
+    memory_scope: MemoryScope = "none"
+    checkpoints: bool = False
+
+
+DIAL_REGISTRY: MappingProxyType[str, DialDescriptor] = MappingProxyType(
+    {
+        "source_universe": DialDescriptor(
+            name="source_universe",
+            label="Source universe",
+            description="Which sources may be searched: web, academic, local, or both.",
+        ),
+        "search_routing": DialDescriptor(
+            name="search_routing",
+            label="Search routing",
+            description="How queries are routed: single endpoint, adaptive, or academic-only.",
+        ),
+        "query_strategy": DialDescriptor(
+            name="query_strategy",
+            label="Query strategy",
+            description="How the question becomes queries: fixed, iterative, or decomposed.",
+        ),
+        "breadth": DialDescriptor(
+            name="breadth",
+            label="Breadth",
+            description="Number of parallel sub-question searches (1-5).",
+        ),
+        "depth": DialDescriptor(
+            name="depth",
+            label="Depth",
+            description="Number of reflection and refinement loops (1-3).",
+        ),
+        "quality_gates": DialDescriptor(
+            name="quality_gates",
+            label="Quality gates",
+            description="How strictly sources are filtered before synthesis.",
+        ),
+        "citation_rigor": DialDescriptor(
+            name="citation_rigor",
+            label="Citation rigor",
+            description="Granularity of citations: per claim, per section, or per report.",
+        ),
+        "verification_passes": DialDescriptor(
+            name="verification_passes",
+            label="Verification passes",
+            description="Post-synthesis verification passes over claims (0-3).",
+        ),
+        "synthesis_style": DialDescriptor(
+            name="synthesis_style",
+            label="Synthesis style",
+            description="Voice of the synthesized report.",
+        ),
+        "output_structure": DialDescriptor(
+            name="output_structure",
+            label="Output structure",
+            description="Shape of the final artifact: brief, report, or dossier.",
+        ),
+        "memory_scope": DialDescriptor(
+            name="memory_scope",
+            label="Memory scope",
+            description="What prior context a run may draw on.",
+        ),
+        "checkpoints": DialDescriptor(
+            name="checkpoints",
+            label="Checkpoints",
+            description="Persist intermediate state so a run can pause and resume.",
+        ),
+    }
+)
+
+
+__all__ = [
+    "DIAL_REGISTRY",
+    "DialDescriptor",
+    "Dials",
+]

backend/src/researchx/config/run_config.py

@@ -0,0 +1,49 @@
+import secrets
+from collections.abc import Mapping
+from datetime import datetime
+from typing import Any
+
+from pydantic import BaseModel, ConfigDict, Field
+
+from researchx.config.dials import Dials
+from researchx.methodologies.registry import MethodologyRegistry
+
+
+class UnknownOverrideError(ValueError):
+    """Raised when an override key is not a dial name."""
+
+
+class RunConfig(BaseModel, frozen=True):
+    """Persisted per-run snapshot of resolved dials (REQ-04)."""
+
+    run_id: str = Field(pattern=r"^[a-z0-9]{8}$")
+    methodology_slug: str
+    question: str = Field(min_length=1)
+    context: str = ""
+    resolved_dials: Dials
+    created_at: datetime
+    overrides: dict[str, Any] = Field(default_factory=dict)
+
+    model_config = ConfigDict(frozen=True)
+
+
+def resolve_dials(
+    methodology_slug: str,
+    overrides: Mapping[str, Any],
+    registry: MethodologyRegistry,
+) -> Dials:
+    """Resolve a methodology's dial bundle with validated overrides applied."""
+    bundle = registry.get(methodology_slug).dials
+    for key in overrides:
+        if key not in Dials.model_fields:
+            raise UnknownOverrideError(f"unknown dial override: {key}")
+    merged = bundle.model_dump()
+    merged.update(overrides)
+    return Dials.model_validate(merged)
+
+
+def new_run_id() -> str:
+    return secrets.token_hex(4)
+
+
+__all__ = ["RunConfig", "UnknownOverrideError", "new_run_id", "resolve_dials"]

backend/src/researchx/methodologies/__init__.py

@@ -0,0 +1,9 @@
+from researchx.methodologies.builtin import registry
+from researchx.methodologies.models import Methodology
+from researchx.methodologies.registry import MethodologyRegistry
+
+__all__ = [
+    "Methodology",
+    "MethodologyRegistry",
+    "registry",
+]

backend/src/researchx/methodologies/builtin.py

@@ -0,0 +1,95 @@
+from researchx.config.dials import Dials
+from researchx.methodologies.models import Methodology
+from researchx.methodologies.registry import MethodologyRegistry
+
+_RAPID_PLANNER_PROMPT = (
+    "You are a rapid research planner. Decompose the user's question into the fewest "
+    "focused sub-questions that yield a confident answer.\n"
+    "Question: {question}\n"
+    "Context: {context}"
+)
+
+_RAPID_WRITER_PROMPT = (
+    "You are a rapid memo writer. Answer the question directly in a short memo.\n"
+    "Cite a source per claim. Every cited quote must come verbatim from the provided "
+    "evidence passages.\n"
+    "Question: {question}\n"
+    "Context: {context}\n"
+    "Plan: {plan}"
+)
+
+_DEEP_PLANNER_PROMPT = (
+    "You are a deep research planner. Decompose the user's question into two "
+    "sub-questions, then propose an outline for an executive report with "
+    "sections, each mapped to the sub-questions it answers.\n"
+    "Question: {question}\n"
+    "Context: {context}"
+)
+
+_DEEP_WRITER_PROMPT = (
+    "You are an executive report writer. Synthesize the evidence into a structured "
+    "executive report following the plan: executive summary, findings, risks, and "
+    "recommendations.\n"
+    "Cite a source per claim. Every cited quote must come verbatim from the provided "
+    "evidence passages.\n"
+    "Question: {question}\n"
+    "Context: {context}\n"
+    "Plan: {plan}"
+)
+
+_BUILTIN: dict[str, Methodology] = {
+    "rapid-answer": Methodology(
+        slug="rapid-answer",
+        name="Rapid Answer",
+        description=(
+            "One search pass, one synthesis pass: a short cited memo for questions "
+            "that need a confident answer fast."
+        ),
+        dials=Dials(
+            source_universe="web",
+            search_routing="single",
+            query_strategy="decomposed",
+            breadth=1,
+            depth=1,
+            quality_gates="standard",
+            citation_rigor="per-claim",
+            verification_passes=1,
+            synthesis_style="memo",
+            output_structure="brief",
+            memory_scope="none",
+            checkpoints=False,
+        ),
+        planner_prompt=_RAPID_PLANNER_PROMPT,
+        writer_prompt=_RAPID_WRITER_PROMPT,
+        output_shape="memo",
+    ),
+    "deep-report": Methodology(
+        slug="deep-report",
+        name="Deep Report",
+        description=(
+            "Full-depth research: iterative sub-questions, reflective refinement, and "
+            "a verified executive report with per-claim citations."
+        ),
+        dials=Dials(
+            source_universe="web+academic",
+            search_routing="adaptive",
+            query_strategy="decomposed",
+            breadth=2,
+            depth=3,
+            quality_gates="strict",
+            citation_rigor="per-claim",
+            verification_passes=2,
+            synthesis_style="executive",
+            output_structure="report",
+            memory_scope="none",
+            checkpoints=True,
+        ),
+        planner_prompt=_DEEP_PLANNER_PROMPT,
+        writer_prompt=_DEEP_WRITER_PROMPT,
+        output_shape="executive-report",
+    ),
+}
+
+registry = MethodologyRegistry(_BUILTIN)
+
+__all__ = ["registry"]

backend/src/researchx/methodologies/models.py

@@ -0,0 +1,28 @@
+from typing import Literal
+
+from pydantic import BaseModel, Field
+
+from researchx.config.dials import Dials
+
+OutputShape = Literal["memo", "executive-report"]
+
+
+class Methodology(BaseModel, frozen=True):
+    """A named research methodology: a dial bundle plus prompt templates (REQ-02)."""
+
+    slug: str = Field(pattern=r"^[a-z0-9]+(-[a-z0-9]+)*$")
+    name: str
+    description: str
+    dials: Dials
+    planner_prompt: str
+    writer_prompt: str
+    output_shape: OutputShape
+
+    def render_planner_prompt(self, question: str, context: str) -> str:
+        return self.planner_prompt.format(question=question, context=context)
+
+    def render_writer_prompt(self, question: str, context: str, plan: str) -> str:
+        return self.writer_prompt.format(question=question, context=context, plan=plan)
+
+
+__all__ = ["Methodology", "OutputShape"]

backend/src/researchx/methodologies/registry.py

@@ -0,0 +1,26 @@
+from collections.abc import Mapping
+
+from researchx.methodologies.models import Methodology
+
+
+class MethodologyRegistry:
+    """Frozen by-slug registry that hands out immutable copies (REQ-02/REQ-03)."""
+
+    def __init__(self, methodologies: Mapping[str, Methodology]) -> None:
+        self._methodologies: dict[str, Methodology] = dict(methodologies)
+
+    def get(self, slug: str) -> Methodology:
+        return self._methodologies[slug].model_copy(deep=True)
+
+    def list(self) -> list[Methodology]:
+        ordered = sorted(self._methodologies.values(), key=lambda m: m.name)
+        return [m.model_copy(deep=True) for m in ordered]
+
+    def __contains__(self, slug: str) -> bool:
+        return slug in self._methodologies
+
+    def __len__(self) -> int:
+        return len(self._methodologies)
+
+
+__all__ = ["MethodologyRegistry"]

backend/tests/test_adapter_types.py

@@ -0,0 +1,21 @@
+import secrets as secrets_module
+from string import ascii_lowercase
+
+from researchx.adapters.local_storage import generate_run_id
+
+
+def test_generate_run_id_format() -> None:
+    run_id = generate_run_id()
+    assert isinstance(run_id, str)
+    assert len(run_id) == 8
+    assert all(c in ascii_lowercase + "23456789" for c in run_id)
+    assert "o" not in run_id and "l" not in run_id and "0" not in run_id and "1" not in run_id
+
+
+def test_generate_run_id_entropy() -> None:
+    ids = {generate_run_id() for _ in range(100)}
+    assert len(ids) == 100
+
+
+def test_generate_run_id_uses_secrets_module() -> None:
+    assert secrets_module.choice is not None

backend/tests/test_capability_probe.py

@@ -0,0 +1,99 @@
+import httpx
+import pytest
+
+from researchx.adapters.capability_probe import probe_model_adapter
+from researchx.adapters.ollama import OllamaModelAdapter
+from researchx.adapters.probe import DEFAULT_CONTEXT_CAP, DEFAULT_EMBEDDING_BATCH
+from researchx.adapters.secrets import EnvFileSecretsProvider
+from researchx.adapters.types import AdapterError
+
+
+def _secrets(tmp_path, values: dict[str, str]) -> EnvFileSecretsProvider:
+    env_file = tmp_path / ".env.secrets"
+    env_file.write_text("".join(f"{k}={v}\n" for k, v in values.items()), encoding="utf-8")
+    return EnvFileSecretsProvider(paths=[env_file])
+
+
+def _ok_smoke_response() -> dict[str, object]:
+    return {
+        "choices": [{"message": {"role": "assistant", "content": '{"ok": true}'}}],
+        "usage": {"prompt_tokens": 3, "completion_tokens": 2},
+    }
+
+
+async def test_probe_green_on_supporting_model(tmp_path, monkeypatch) -> None:
+    secrets = _secrets(tmp_path, {"OLLAMA_API_KEY": "cloud-key"})
+    adapter = OllamaModelAdapter(secrets, planner_model="p", writer_model="w")
+
+    def handler(request: httpx.Request) -> httpx.Response:
+        if str(request.url).endswith("/models"):
+            return httpx.Response(200, json={"data": [{"id": "w"}, {"id": "p"}]})
+        return httpx.Response(200, json=_ok_smoke_response())
+
+    transport = httpx.MockTransport(handler)
+    original = httpx.AsyncClient
+    monkeypatch.setattr(httpx, "AsyncClient", lambda **kwargs: original(transport=transport, **kwargs))
+
+    probe = await probe_model_adapter(adapter)
+    assert probe.endpoint == "https://ollama.com/v1"
+    assert probe.models == ["w", "p"]
+    assert probe.context_window == DEFAULT_CONTEXT_CAP
+    assert probe.embedding_batch == DEFAULT_EMBEDDING_BATCH
+    assert probe.structured_outputs_supported is True
+    assert probe.structured_output_warning is None
+    assert probe.degraded is False
+
+
+async def test_probe_warns_on_weak_structured_output(tmp_path, monkeypatch) -> None:
+    secrets = _secrets(tmp_path, {"OLLAMA_API_KEY": "cloud-key"})
+    adapter = OllamaModelAdapter(secrets, planner_model="p", writer_model="writer-model")
+
+    def handler(request: httpx.Request) -> httpx.Response:
+        if str(request.url).endswith("/models"):
+            return httpx.Response(200, json={"data": [{"id": "writer-model"}]})
+        return httpx.Response(200, json={"choices": [{"message": {"content": "not json"}}]})
+
+    transport = httpx.MockTransport(handler)
+    original = httpx.AsyncClient
+    monkeypatch.setattr(httpx, "AsyncClient", lambda **kwargs: original(transport=transport, **kwargs))
+
+    probe = await probe_model_adapter(adapter)
+    assert probe.structured_outputs_supported is False
+    assert probe.structured_output_warning is not None
+    assert "writer-model" in probe.structured_output_warning
+    assert "degrade" in probe.structured_output_warning
+    assert probe.degraded is True
+
+
+async def test_probe_reports_endpoint_down_as_unsupported(tmp_path, monkeypatch) -> None:
+    secrets = _secrets(tmp_path, {"OLLAMA_API_KEY": "cloud-key"})
+    adapter = OllamaModelAdapter(secrets, planner_model="p", writer_model="w")
+
+    def handler(request: httpx.Request) -> httpx.Response:
+        return httpx.Response(500, text="boom")
+
+    transport = httpx.MockTransport(handler)
+    original = httpx.AsyncClient
+    monkeypatch.setattr(httpx, "AsyncClient", lambda **kwargs: original(transport=transport, **kwargs))
+
+    with pytest.raises(AdapterError):
+        await probe_model_adapter(adapter)
+
+
+async def test_list_models_falls_back_to_local(tmp_path, monkeypatch) -> None:
+    secrets = _secrets(tmp_path, {"OLLAMA_API_KEY": "cloud-key"})
+    adapter = OllamaModelAdapter(secrets, planner_model="p", writer_model="w")
+
+    def handler(request: httpx.Request) -> httpx.Response:
+        if str(request.url).startswith("https://ollama.com"):
+            return httpx.Response(401, json={"error": "unauthorized"})
+        return httpx.Response(200, json={"data": [{"id": "local-model"}]})
+
+    transport = httpx.MockTransport(handler)
+    original = httpx.AsyncClient
+    monkeypatch.setattr(httpx, "AsyncClient", lambda **kwargs: original(transport=transport, **kwargs))
+
+    models = await adapter.list_models()
+    assert models == ["local-model"]
+    assert adapter.active_base_url == "http://localhost:11434/v1"
+    assert adapter.last_fallback_reason is not None

backend/tests/test_dials.py

@@ -0,0 +1,66 @@
+import pytest
+from pydantic import ValidationError
+
+from researchx.config.dials import DIAL_REGISTRY, DialDescriptor, Dials
+
+EXPECTED_DIALS = {
+    "source_universe": "web",
+    "search_routing": "single",
+    "query_strategy": "decomposed",
+    "breadth": 2,
+    "depth": 1,
+    "quality_gates": "standard",
+    "citation_rigor": "per-claim",
+    "verification_passes": 1,
+    "synthesis_style": "memo",
+    "output_structure": "brief",
+    "memory_scope": "none",
+    "checkpoints": False,
+}
+
+
+def test_defaults_resolve() -> None:
+    assert Dials().model_dump() == EXPECTED_DIALS
+
+
+def test_all_twelve_dials_present() -> None:
+    assert set(Dials.model_fields) == set(EXPECTED_DIALS)
+    assert len(Dials.model_fields) == 12
+
+
+def test_registry_covers_all_dials() -> None:
+    assert set(DIAL_REGISTRY) == set(EXPECTED_DIALS)
+    for descriptor in DIAL_REGISTRY.values():
+        assert isinstance(descriptor, DialDescriptor)
+        assert descriptor.label
+        assert descriptor.description
+
+
+def test_literal_dial_rejects_invalid_value() -> None:
+    with pytest.raises(ValidationError):
+        Dials(source_universe="library")
+
+
+def test_bounded_int_rejects_out_of_range() -> None:
+    with pytest.raises(ValidationError):
+        Dials(breadth=6)
+    with pytest.raises(ValidationError):
+        Dials(depth=0)
+    with pytest.raises(ValidationError):
+        Dials(verification_passes=-1)
+
+
+def test_checkpoints_rejects_non_bool() -> None:
+    with pytest.raises(ValidationError):
+        Dials(checkpoints=5)
+
+
+def test_model_dump_round_trips() -> None:
+    dials = Dials(depth=3, breadth=5, checkpoints=True, synthesis_style="executive")
+    assert Dials.model_validate(dials.model_dump()) == dials
+
+
+def test_dials_are_immutable() -> None:
+    dials = Dials()
+    with pytest.raises(ValidationError):
+        dials.depth = 3

backend/tests/test_fakes.py

@@ -0,0 +1,82 @@
+import inspect
+
+from researchx.adapters import fakes
+from researchx.adapters.fakes import CORPUS, FakeModelAdapter, FakeSearchAdapter, corpus
+from researchx.adapters.model import ModelAdapter, ModelRoles
+from researchx.adapters.search import SearchAdapter
+from researchx.adapters.types import AdapterError, ChatResult, ModelMessage
+
+
+def _model() -> FakeModelAdapter:
+    return FakeModelAdapter(canned=[ChatResult(content="ok", model="fake-model")])
+
+
+async def test_fake_model_full_interface() -> None:
+    model = _model()
+    assert isinstance(model, ModelAdapter)
+    result = await model.chat([ModelMessage(role="user", content="hi")], model="fake-model")
+    assert result.content == "ok"
+    assert await model.list_models() == ["fake-model"]
+    assert model.roles() == ModelRoles(planner="fake-planner", writer="fake-writer")
+
+
+async def test_fake_model_exhausted_raises() -> None:
+    model = _model()
+    await model.chat([ModelMessage(role="user", content="hi")], model="fake-model")
+    try:
+        await model.chat([ModelMessage(role="user", content="again")], model="fake-model")
+    except AdapterError:
+        pass
+    else:
+        raise AssertionError("expected AdapterError")
+
+
+async def test_fake_model_json_mode_recorded() -> None:
+    model = _model()
+    await model.chat([ModelMessage(role="user", content="hi")], model="fake-model", json_mode=True)
+    assert model.last_json_mode is True
+
+
+async def test_fake_search_full_interface() -> None:
+    search = FakeSearchAdapter(corpus())
+    assert isinstance(search, SearchAdapter)
+    results = await search.search("verification quoted claim", max_results=3)
+    assert 0 < len(results) <= 3
+    page = await search.fetch(results[0].url)
+    assert page.url == results[0].url
+
+
+async def test_fake_search_deterministic_order() -> None:
+    search = FakeSearchAdapter(corpus())
+    first = await search.search("methodology", max_results=5)
+    second = await search.search("methodology", max_results=5)
+    assert [r.url for r in first] == [r.url for r in second]
+
+
+async def test_fake_search_unknown_url_raises() -> None:
+    search = FakeSearchAdapter(corpus())
+    try:
+        await search.fetch("https://example.org/missing")
+    except AdapterError:
+        pass
+    else:
+        raise AssertionError("expected AdapterError")
+
+
+def test_corpus_shape() -> None:
+    pages = CORPUS
+    assert len(pages) >= 5
+    urls = [p.url for p in pages]
+    assert len(set(urls)) == len(urls)
+    texts = "\n".join(p.text for p in pages)
+    assert "—" in texts or "é" in texts or "近" in texts
+
+
+def test_corpus_shared_sentence() -> None:
+    sharing = [p for p in CORPUS if fakes.SHARED_SENTENCE in p.text]
+    assert len(sharing) == 2
+
+
+def test_fakes_no_httpx_dependency() -> None:
+    source = inspect.getsource(fakes)
+    assert "httpx" not in source

backend/tests/test_integration_p1.py

@@ -0,0 +1,84 @@
+from datetime import UTC, datetime
+
+import pytest
+
+from researchx.adapters.fakes import CORPUS, FakeModelAdapter, FakeSearchAdapter
+from researchx.adapters.local_storage import LocalStorageAdapter
+from researchx.adapters.types import ChatResult
+from researchx.config.run_config import RunConfig, UnknownOverrideError, new_run_id, resolve_dials
+from researchx.methodologies import registry
+
+
+async def test_registry_to_fake_model_to_snapshot_round_trip(tmp_path) -> None:
+    methodology = registry.get("deep-report")
+    canned = ChatResult(
+        content='{"sub_questions": ["What is verification?", "How does anchoring work?"]}',
+        model="fake-planner",
+    )
+    model = FakeModelAdapter(canned=[canned])
+    plan_result = await model.chat([], model=model.roles().planner, json_mode=True)
+    assert "sub_questions" in plan_result.content
+
+    run_id = new_run_id()
+    dials = resolve_dials("deep-report", {"breadth": 3}, registry)
+    run_config = RunConfig(
+        run_id=run_id,
+        methodology_slug="deep-report",
+        question="How do verification pipelines keep citations honest?",
+        resolved_dials=dials,
+        overrides={"breadth": 3},
+        created_at=datetime.now(UTC),
+    )
+    assert run_config.resolved_dials.breadth == 3
+
+    storage = LocalStorageAdapter(base_dir=tmp_path)
+    await storage.write_run_artifact(run_id, "run_config.json", run_config.model_dump_json())
+
+    restored = RunConfig.model_validate_json(
+        await storage.read_run_artifact(run_id, "run_config.json")
+    )
+    assert restored == run_config
+    assert restored.resolved_dials.depth == methodology.dials.depth
+
+
+def test_methodology_behavior_difference() -> None:
+    rapid = registry.get("rapid-answer")
+    deep = registry.get("deep-report")
+    assert rapid.dials.depth < deep.dials.depth
+    assert rapid.dials.breadth < deep.dials.breadth
+    assert rapid.output_shape != deep.output_shape
+    assert rapid.dials.synthesis_style != deep.dials.synthesis_style
+    assert rapid.dials.verification_passes < deep.dials.verification_passes
+    assert rapid.dials.output_structure != deep.dials.output_structure
+
+
+def test_registry_snapshot_immutability() -> None:
+    from pydantic import ValidationError
+
+    methodology = registry.get("rapid-answer")
+    frozen = registry.get("rapid-answer")
+    with pytest.raises(ValidationError):
+        frozen.dials.depth = 99
+    fresh = registry.get("rapid-answer")
+    assert fresh.dials.depth == methodology.dials.depth
+    assert fresh.dials.depth == 1
+
+
+def test_override_rejects_unknown_dial() -> None:
+    with pytest.raises(UnknownOverrideError):
+        resolve_dials("rapid-answer", {"nonexistent_dial": 1}, registry)
+
+
+def test_new_run_id_format() -> None:
+    run_id = new_run_id()
+    assert len(run_id) == 8
+    assert all(c in "0123456789abcdef" for c in run_id)
+
+
+async def test_fake_search_feeds_evidence_shape() -> None:
+    search = FakeSearchAdapter(CORPUS)
+    results = await search.search("methodology dials verification", max_results=5)
+    assert len(results) >= 1
+    for result in results:
+        page = await search.fetch(result.url)
+        assert page.text.strip()

backend/tests/test_local_storage.py

@@ -0,0 +1,66 @@
+from pathlib import Path
+
+from researchx.adapters.local_storage import LocalStorageAdapter
+from researchx.adapters.storage import StorageAdapter
+from researchx.adapters.types import AdapterError
+
+
+async def test_storage_round_trip(tmp_path: Path) -> None:
+    storage = LocalStorageAdapter(base_dir=tmp_path)
+    assert isinstance(storage, StorageAdapter)
+    target = await storage.write_run_artifact("abcd2345", "state.json", '{"state": "PLANNING"}')
+    assert target.exists()
+    content = await storage.read_run_artifact("abcd2345", "state.json")
+    assert content == '{"state": "PLANNING"}'
+
+
+async def test_atomic_overwrite(tmp_path: Path) -> None:
+    storage = LocalStorageAdapter(base_dir=tmp_path)
+    await storage.write_run_artifact("abcd2345", "state.json", '{"v": 1}')
+    await storage.write_run_artifact("abcd2345", "state.json", '{"v": 2}')
+    assert await storage.read_run_artifact("abcd2345", "state.json") == '{"v": 2}'
+    leftovers = list((tmp_path / "runs" / "abcd2345").glob("*.tmp"))
+    assert leftovers == []
+
+
+async def test_run_dir_layout(tmp_path: Path) -> None:
+    storage = LocalStorageAdapter(base_dir=tmp_path)
+    run_dir = storage.run_dir("abcd2345")
+    assert run_dir == tmp_path / "runs" / "abcd2345"
+    await storage.write_run_artifact("abcd2345", "report.md", "# Report")
+    assert run_dir.is_dir()
+
+
+async def test_read_missing_raises(tmp_path: Path) -> None:
+    storage = LocalStorageAdapter(base_dir=tmp_path)
+    try:
+        await storage.read_run_artifact("zzzz9999", "state.json")
+    except AdapterError:
+        pass
+    else:
+        raise AssertionError("expected AdapterError")
+
+
+async def test_path_traversal_rejected(tmp_path: Path) -> None:
+    storage = LocalStorageAdapter(base_dir=tmp_path)
+    for bad_name in ["../escape.md", "/etc/passwd", "a/b.md", "", "."]:
+        try:
+            await storage.write_run_artifact("abcd2345", bad_name, "x")
+        except AdapterError:
+            pass
+        else:
+            raise AssertionError(f"expected AdapterError for name: {bad_name!r}")
+    for bad_run_id in ["../evil", "short", "waytoolongid123", "ABCD2345", "a b c d e"]:
+        try:
+            await storage.write_run_artifact(bad_run_id, "state.json", "x")
+        except AdapterError:
+            pass
+        else:
+            raise AssertionError(f"expected AdapterError for run_id: {bad_run_id!r}")
+
+
+async def test_no_tmp_leftover_after_write(tmp_path: Path) -> None:
+    storage = LocalStorageAdapter(base_dir=tmp_path)
+    await storage.write_run_artifact("abcd2345", "state.json", '{"v": 1}')
+    leftovers = list((tmp_path / "runs" / "abcd2345").glob("*.tmp"))
+    assert leftovers == []

backend/tests/test_methodologies.py

@@ -0,0 +1,85 @@
+import pytest
+from pydantic import ValidationError
+
+from researchx.methodologies import registry
+
+
+def test_registry_resolves_both_slugs() -> None:
+    rapid = registry.get("rapid-answer")
+    deep = registry.get("deep-report")
+    assert rapid.slug == "rapid-answer"
+    assert deep.slug == "deep-report"
+    assert rapid.name == "Rapid Answer"
+    assert deep.name == "Deep Report"
+
+
+def test_unknown_slug_raises_key_error() -> None:
+    with pytest.raises(KeyError):
+        registry.get("systematic-review")
+
+
+def test_list_ordered_by_name() -> None:
+    listed = registry.list()
+    assert [m.name for m in listed] == ["Deep Report", "Rapid Answer"]
+
+
+def test_builtin_dials_match_contracts() -> None:
+    rapid = registry.get("rapid-answer")
+    assert rapid.dials.depth == 1
+    assert rapid.dials.breadth == 1
+    assert rapid.dials.verification_passes == 1
+    assert rapid.dials.citation_rigor == "per-claim"
+    assert rapid.dials.synthesis_style == "memo"
+    assert rapid.dials.output_structure == "brief"
+    assert rapid.output_shape == "memo"
+
+    deep = registry.get("deep-report")
+    assert deep.dials.depth == 3
+    assert deep.dials.breadth == 2
+    assert deep.dials.verification_passes == 2
+    assert deep.dials.citation_rigor == "per-claim"
+    assert deep.dials.synthesis_style == "executive"
+    assert deep.dials.output_structure == "report"
+    assert deep.dials.checkpoints is True
+    assert deep.output_shape == "executive-report"
+
+
+def test_methodologies_differ_meaningfully() -> None:
+    rapid = registry.get("rapid-answer")
+    deep = registry.get("deep-report")
+    assert rapid.dials.depth != deep.dials.depth
+    assert rapid.dials.breadth != deep.dials.breadth
+    assert rapid.dials.verification_passes != deep.dials.verification_passes
+    assert rapid.dials.synthesis_style != deep.dials.synthesis_style
+    assert rapid.dials.output_structure != deep.dials.output_structure
+    assert rapid.output_shape != deep.output_shape
+
+
+def test_registry_entries_are_immutable() -> None:
+    snapshot = registry.get("rapid-answer")
+    with pytest.raises(ValidationError):
+        snapshot.dials.depth = 3
+    assert registry.get("rapid-answer").dials.depth == 1
+
+    listed = registry.list()
+    with pytest.raises(ValidationError):
+        listed[0].dials.checkpoints = True
+    assert registry.get("rapid-answer").dials.checkpoints is False
+
+
+def test_prompt_templates_render_placeholders() -> None:
+    deep = registry.get("deep-report")
+    planner = deep.render_planner_prompt(question="What changed?", context="none")
+    assert "What changed?" in planner
+    assert "none" in planner
+    writer = deep.render_writer_prompt(question="What changed?", context="none", plan="p1")
+    assert "{plan}" not in writer
+    assert "p1" in writer
+
+
+def test_mutation_of_returned_copy_does_not_affect_registry() -> None:
+    original = registry.get("deep-report").dials.model_dump()
+    copy = registry.get("deep-report").dials.model_copy()
+    mutated = copy.model_copy(update={"depth": 1})
+    assert mutated.depth == 1
+    assert registry.get("deep-report").dials.model_dump() == original

backend/tests/test_real_adapters.py

@@ -0,0 +1,203 @@
+import httpx
+import pytest
+
+from researchx.adapters.duckduckgo import DuckDuckGoSearchAdapter
+from researchx.adapters.model import ModelRoles
+from researchx.adapters.ollama import OllamaModelAdapter
+from researchx.adapters.probe import CapabilityProbe, cap_context_window, structured_output_warning
+from researchx.adapters.secrets import EnvFileSecretsProvider
+from researchx.adapters.tavily import TavilySearchAdapter
+from researchx.adapters.types import AdapterError, ModelMessage
+
+
+def _secrets(tmp_path, values: dict[str, str]) -> EnvFileSecretsProvider:
+    env_file = tmp_path / ".env.secrets"
+    env_file.write_text(
+        "".join(f"{k}={v}\n" for k, v in values.items()),
+        encoding="utf-8",
+    )
+    return EnvFileSecretsProvider(paths=[env_file])
+
+
+def _chat_payload_ok() -> dict[str, object]:
+    return {
+        "choices": [{"message": {"role": "assistant", "content": '{"ok": true}'}}],
+        "usage": {"prompt_tokens": 10, "completion_tokens": 5},
+    }
+
+
+async def test_ollama_adapter_uses_cloud_when_keyed(tmp_path, monkeypatch) -> None:
+    secrets = _secrets(tmp_path, {"OLLAMA_API_KEY": "cloud-key"})
+    adapter = OllamaModelAdapter(secrets, planner_model="p", writer_model="w")
+
+    calls: list[tuple[str, dict[str, str]]] = []
+
+    def handler(request: httpx.Request) -> httpx.Response:
+        calls.append((str(request.url), dict(request.headers)))
+        return httpx.Response(200, json=_chat_payload_ok())
+
+    transport = httpx.MockTransport(handler)
+    original = httpx.AsyncClient
+    monkeypatch.setattr(httpx, "AsyncClient", lambda **kwargs: original(transport=transport, **kwargs))
+
+    result = await adapter.chat([ModelMessage(role="user", content="hi")], model="w")
+    assert result.content == '{"ok": true}'
+    assert calls[0][0].startswith("https://ollama.com/v1")
+    assert "Bearer cloud-key" in calls[0][1]["authorization"]
+
+
+async def test_ollama_adapter_falls_back_to_local_on_cloud_failure(tmp_path, monkeypatch) -> None:
+    secrets = _secrets(tmp_path, {"OLLAMA_API_KEY": "cloud-key"})
+    adapter = OllamaModelAdapter(secrets, planner_model="p", writer_model="w")
+
+    bases_hit: list[str] = []
+
+    def handler(request: httpx.Request) -> httpx.Response:
+        url = str(request.url)
+        bases_hit.append(url)
+        if url.startswith("https://ollama.com"):
+            return httpx.Response(401, json={"error": "bad key"})
+        return httpx.Response(200, json=_chat_payload_ok())
+
+    transport = httpx.MockTransport(handler)
+    original = httpx.AsyncClient
+    monkeypatch.setattr(httpx, "AsyncClient", lambda **kwargs: original(transport=transport, **kwargs))
+
+    result = await adapter.chat([ModelMessage(role="user", content="hi")], model="w")
+    assert result.content == '{"ok": true}'
+    assert any(u.startswith("http://localhost:11434/v1") for u in bases_hit)
+    assert adapter.last_fallback_reason is not None
+    assert adapter.active_base_url == "http://localhost:11434/v1"
+
+
+async def test_ollama_roles(tmp_path) -> None:
+    secrets = _secrets(tmp_path, {})
+    adapter = OllamaModelAdapter(secrets, planner_model="planner-model", writer_model="writer-model")
+    assert adapter.roles() == ModelRoles(planner="planner-model", writer="writer-model")
+
+
+def test_context_cap() -> None:
+    assert cap_context_window(None) == 8192
+    assert cap_context_window(100_000) == 8192
+    assert cap_context_window(4_096) == 4_096
+    assert cap_context_window(0) == 8192
+
+
+def test_structured_output_warning_contract() -> None:
+    assert structured_output_warning(True, "m") is None
+    warning = structured_output_warning(False, "writer-model")
+    assert warning is not None
+    assert "writer-model" in warning
+    assert "degrade" in warning
+    probe = CapabilityProbe(
+        endpoint="http://localhost:11434/v1",
+        models=["m"],
+        context_window=8192,
+        embedding_batch=8,
+        structured_outputs_supported=False,
+        structured_output_warning=warning,
+    )
+    assert probe.degraded
+
+
+async def test_tavily_requires_key(tmp_path) -> None:
+    secrets = _secrets(tmp_path, {})
+    with pytest.raises(AdapterError):
+        TavilySearchAdapter(secrets)
+
+
+async def test_tavily_search_returns_results(tmp_path, monkeypatch) -> None:
+    secrets = _secrets(tmp_path, {"TAVILY_API_KEY": "t-key"})
+
+    def handler(request: httpx.Request) -> httpx.Response:
+        import json
+
+        body = json.loads(request.content.decode())
+        assert body["api_key"] == "t-key"
+        return httpx.Response(
+            200,
+            json={
+                "results": [
+                    {"title": "T1", "url": "https://example.org/a", "content": "snippet one"},
+                    {"title": "T2", "url": "https://example.org/b", "content": "snippet two"},
+                ]
+            },
+        )
+
+    transport = httpx.MockTransport(handler)
+    original = httpx.AsyncClient
+    monkeypatch.setattr(httpx, "AsyncClient", lambda **kwargs: original(transport=transport, **kwargs))
+
+    adapter = TavilySearchAdapter(secrets)
+    results = await adapter.search("deep research", max_results=2)
+    assert [r.title for r in results] == ["T1", "T2"]
+
+
+async def test_ddg_parses_html_results(monkeypatch) -> None:
+    html = """
+    <div class="results">
+      <a rel="nofollow" class="result__a" href="//duckduckgo.com/l/?uddg=https%3A%2F%2Fexample.org%2Fx&amp;rut=abc">Example One</a>
+      <a class="result__snippet" href="#">First snippet text</a>
+      <a rel="nofollow" class="result__a" href="https://example.org/y">Example Two</a>
+      <a class="result__snippet" href="#">Second snippet text</a>
+    </div>
+    """
+
+    def handler(request: httpx.Request) -> httpx.Response:
+        return httpx.Response(200, text=html)
+
+    transport = httpx.MockTransport(handler)
+    original = httpx.AsyncClient
+    monkeypatch.setattr(httpx, "AsyncClient", lambda **kwargs: original(transport=transport, **kwargs))
+
+    adapter = DuckDuckGoSearchAdapter()
+    results = await adapter.search("anything", max_results=8)
+    assert [r.url for r in results] == ["https://example.org/x", "https://example.org/y"]
+    assert results[0].snippet == "First snippet text"
+    assert adapter.last_degradation is None
+
+
+async def test_ddg_rate_limit_degrades_with_typed_warning(monkeypatch) -> None:
+    def handler(request: httpx.Request) -> httpx.Response:
+        return httpx.Response(403, text="forbidden")
+
+    transport = httpx.MockTransport(handler)
+    original = httpx.AsyncClient
+    monkeypatch.setattr(httpx, "AsyncClient", lambda **kwargs: original(transport=transport, **kwargs))
+
+    adapter = DuckDuckGoSearchAdapter()
+    results = await adapter.search("anything")
+    assert results == []
+    assert adapter.last_degradation is not None
+    assert "rate-limited" in adapter.last_degradation
+
+
+async def test_ddg_fetch_extracts_text(monkeypatch) -> None:
+    html = "<html><head><title>Page Title</title></head><body><script>var x=1;</script><p>Hello world</p></body></html>"
+
+    def handler(request: httpx.Request) -> httpx.Response:
+        return httpx.Response(200, text=html)
+
+    transport = httpx.MockTransport(handler)
+    original = httpx.AsyncClient
+    monkeypatch.setattr(httpx, "AsyncClient", lambda **kwargs: original(transport=transport, **kwargs))
+
+    adapter = DuckDuckGoSearchAdapter()
+    page = await adapter.fetch("https://example.org/x")
+    assert page.title == "Page Title"
+    assert "Hello world" in page.text
+    assert "var x" not in page.text
+
+
+def test_resolve_search_adapter_prefers_tavily(tmp_path) -> None:
+    from researchx.adapters.duckduckgo import resolve_search_adapter
+
+    keyed = _secrets(tmp_path, {"TAVILY_API_KEY": "t-key"})
+    adapter, name = resolve_search_adapter(keyed)
+    assert name == "tavily"
+    assert isinstance(adapter, TavilySearchAdapter)
+
+    keyless = _secrets(tmp_path, {})
+    adapter, name = resolve_search_adapter(keyless)
+    assert name == "duckduckgo-keyless"
+    assert isinstance(adapter, DuckDuckGoSearchAdapter)

backend/tests/test_run_config.py

@@ -0,0 +1,96 @@
+from datetime import UTC, datetime
+
+import pytest
+from pydantic import ValidationError
+
+from researchx.config.dials import Dials
+from researchx.config.run_config import (
+    RunConfig,
+    UnknownOverrideError,
+    new_run_id,
+    resolve_dials,
+)
+from researchx.methodologies import registry
+
+
+def test_resolve_applies_overrides_on_top_of_bundle() -> None:
+    resolved = resolve_dials("deep-report", {"depth": 1, "checkpoints": False}, registry)
+    assert resolved.depth == 1
+    assert resolved.checkpoints is False
+    assert resolved.breadth == 2
+    assert resolved.verification_passes == 2
+
+
+def test_resolve_empty_overrides_returns_bundle() -> None:
+    resolved = resolve_dials("rapid-answer", {}, registry)
+    assert resolved == registry.get("rapid-answer").dials
+
+
+def test_resolve_rejects_unknown_override_keys() -> None:
+    with pytest.raises(UnknownOverrideError):
+        resolve_dials("rapid-answer", {"temperature": 0.7}, registry)
+
+
+def test_resolve_rejects_invalid_override_values() -> None:
+    with pytest.raises(ValidationError):
+        resolve_dials("rapid-answer", {"depth": 9}, registry)
+    with pytest.raises(ValidationError):
+        resolve_dials("deep-report", {"synthesis_style": "poetic"}, registry)
+
+
+def test_resolve_does_not_mutate_registry_bundle() -> None:
+    resolve_dials("deep-report", {"depth": 1}, registry)
+    assert registry.get("deep-report").dials.depth == 3
+
+
+def _run_config(**overrides: object) -> RunConfig:
+    return RunConfig(
+        run_id=new_run_id(),
+        methodology_slug="deep-report",
+        question="What changed in the market?",
+        context="Q3 earnings season",
+        resolved_dials=resolve_dials("deep-report", overrides, registry),
+        created_at=datetime.now(UTC),
+        overrides=dict(overrides),
+    )
+
+
+def test_run_config_accepts_valid_id() -> None:
+    config = _run_config(depth=2)
+    assert config.run_id == "abcd1234" or len(config.run_id) == 8
+
+
+def test_run_config_rejects_invalid_run_id() -> None:
+    with pytest.raises(ValidationError):
+        RunConfig(
+            run_id="short",
+            methodology_slug="rapid-answer",
+            question="q",
+            resolved_dials=Dials(),
+            created_at=datetime.now(UTC),
+        )
+
+
+def test_run_config_rejects_empty_question() -> None:
+    with pytest.raises(ValidationError):
+        RunConfig(
+            run_id=new_run_id(),
+            methodology_slug="rapid-answer",
+            question="",
+            resolved_dials=Dials(),
+            created_at=datetime.now(UTC),
+        )
+
+
+def test_run_config_snapshot_round_trips_json() -> None:
+    config = _run_config(depth=2, checkpoints=False)
+    restored = RunConfig.model_validate_json(config.model_dump_json())
+    assert restored == config
+    assert restored.resolved_dials.depth == 2
+    assert restored.overrides == {"depth": 2, "checkpoints": False}
+
+
+def test_run_config_is_immutable() -> None:
+    config = _run_config()
+    with pytest.raises(ValidationError):
+        config.question = "different"

backend/tests/test_secrets.py

@@ -0,0 +1,46 @@
+from pathlib import Path
+
+from researchx.adapters.secrets import EnvFileSecretsProvider, SecretsProvider
+
+
+def test_secrets_provider_conformance(tmp_path: Path) -> None:
+    env_file = tmp_path / ".env.secrets"
+    env_file.write_text("OLLAMA_API_KEY=test-key-value\n", encoding="utf-8")
+    provider = EnvFileSecretsProvider(paths=[env_file])
+    assert isinstance(provider, SecretsProvider)
+    assert provider.resolve("OLLAMA_API_KEY") == "test-key-value"
+    assert provider.resolve("MISSING_VAR") is None
+
+
+def test_secrets_later_file_wins(tmp_path: Path) -> None:
+    first = tmp_path / ".env"
+    second = tmp_path / ".env.secrets"
+    first.write_text("TAVILY_API_KEY=first-key\nOLLAMA_API_KEY=ollama-first\n", encoding="utf-8")
+    second.write_text("OLLAMA_API_KEY=ollama-second\n", encoding="utf-8")
+    provider = EnvFileSecretsProvider(paths=[first, second])
+    assert provider.resolve("TAVILY_API_KEY") == "first-key"
+    assert provider.resolve("OLLAMA_API_KEY") == "ollama-second"
+
+
+def test_secrets_parse_skips_comments_and_blanks(tmp_path: Path) -> None:
+    env_file = tmp_path / ".env"
+    env_file.write_text(
+        "# comment line\n\nGITEA_TOKEN='quoted-token'\nBROKEN_LINE_NO_EQUALS\n",
+        encoding="utf-8",
+    )
+    provider = EnvFileSecretsProvider(paths=[env_file])
+    assert provider.resolve("GITEA_TOKEN") == "quoted-token"
+    assert provider.resolve("BROKEN_LINE_NO_EQUALS") is None
+
+
+def test_secrets_repr_never_leaks_values(tmp_path: Path) -> None:
+    env_file = tmp_path / ".env.secrets"
+    env_file.write_text("OLLAMA_API_KEY=super-secret-value-123\n", encoding="utf-8")
+    provider = EnvFileSecretsProvider(paths=[env_file])
+    assert "super-secret-value-123" not in repr(provider)
+    assert "super-secret-value-123" not in str(provider)
+
+
+def test_secrets_missing_file_ignored(tmp_path: Path) -> None:
+    provider = EnvFileSecretsProvider(paths=[tmp_path / ".env.absent"])
+    assert provider.resolve("ANY_KEY") is None

backend/tests/test_smoke.py

@@ -0,0 +1,5 @@
+import researchx
+
+
+def test_package_imports() -> None:
+    assert researchx.__name__ == "researchx"

backend/uv.lock

@@ -0,0 +1,628 @@
+version = 1
+revision = 3
+requires-python = ">=3.12"
+resolution-markers = [
+    "python_full_version >= '3.15'",
+    "python_full_version < '3.15'",
+]
+
+[[package]]
+name = "annotated-types"
+version = "0.8.0"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/5f/56/a8120250d128bed162cd73c76d45f6ef9991f3e068f62a8ee060afa3104a/annotated_types-0.8.0.tar.gz", hash = "sha256:13b2beaad985e05e2d6407ee4c4f35590b11f8d693a258a561055cac8f64cab7", size = 15893, upload-time = "2026-07-23T20:16:13.995Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/99/91/8acff4f5e50511b911bbccb72b8628a49c68ce14148cd9f6431094859a90/annotated_types-0.8.0-py3-none-any.whl", hash = "sha256:f072f4d804ea359e4eaf198b1af7a8b0943881a87f31bb764f8bf219bb9419e0", size = 13427, upload-time = "2026-07-23T20:16:12.938Z" },
+]
+
+[[package]]
+name = "anyio"
+version = "4.15.1"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "idna" },
+    { name = "typing-extensions", marker = "python_full_version < '3.15'" },
+]
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