docs(milestone): complete v1.1 (InboxOS Papra Gate + DR + Observability)

Final close per the v1.1 ship. Three changes:

  1. .ciagent/inboxos/REQUIREMENTS.md — top-of-file close note
     mirroring the v1.0 close note; the 11 candidates remain
     [CANDIDATE] pending CPO authoring in docs/requirements.md.
  2. .ciagent/inboxos/ROADMAP.md — flip the v1.1 ideation block
     from 'ideation complete' to 'executed 2026-06-08' with the
     release_id, tag, and v1.2 backlog pointer.
  3. .ciagent/config.json — update the inboxos entry from
     milestone=v1.0 to milestone=v1.1, status still complete.

The 14 task commits are recorded in .ciagent/inboxos/CI-LOG.md
verification + review + audit blocks. The v1.1 release 178 is
live at https://git.cloudinit.dev/jc-capital/inboxos/releases/tag/v1.1.0.

---ci---
project: inboxos
phase: 0
milestone: v1.1
status: complete
requirements:
  covered: [REQ-INB-15, REQ-INB-16, REQ-INB-17, REQ-INB-18, REQ-INB-19, REQ-INB-20, REQ-INB-21, REQ-INB-22, REQ-INB-23, REQ-INB-24, REQ-INB-25]
  partial: []
---/ci---

.ciagent/config.json

@@ -21,7 +21,7 @@
     {
       "slug": "inboxos",
       "name": "InboxOS",
-      "milestone": "v1.0",
+      "milestone": "v1.1",
       "status": "complete"
     }
   ],

.ciagent/inboxos/REQUIREMENTS.md

@@ -7,6 +7,16 @@
 > acceptance gate at `docs/operations-runbook.md §9`. See
 > `.ciagent/inboxos/ROADMAP.md` Phase 5 status row and
 > `.ciagent/inboxos/CI-LOG.md` verification block.
+>
+> **Milestone v1.1 close (2026-06-08):** all 11 v1.1 candidates
+> (REQ-INB-15 through REQ-INB-25) are EXECUTED per the
+> acceptance gate at `docs/operations-runbook.md §9.4`. The
+> candidates remain `[CANDIDATE]` until the CPO authors matching
+> entries in `docs/requirements.md`. The 14 task commits are
+> recorded in `.ciagent/inboxos/CI-LOG.md` verification +
+> review + audit blocks. See
+> `.ciagent/inboxos/ROADMAP.md` v1.1 ideation block and
+> `.ciagent/inboxos/verify/v1.1-PHASE1-REPORT.md`.
 
 ## REQ-INB-1 — Live IMAP poll
 

.ciagent/inboxos/ROADMAP.md

@@ -66,7 +66,8 @@
 ## v1.1 ideation (Phase 01)
 
 - **Goal**: present candidate REQ-INB-15+ for CPO review.
-- **Status**: ideation complete; awaiting CPO draft of `docs/requirements.md`.
+- **Status**: executed 2026-06-08. Acceptance gate §9.4 PASS. Tag v1.1.0. Release 178. Merge to main.
 - **Artifacts**: `.ciagent/inboxos/ideation/v1.1-candidates.md`,
-  `.ciagent/inboxos/REQUIREMENTS.md` v1.1 candidate section.
-- **Next stage**: PLAN (vertical-slice plans for the top candidates).
+  `.ciagent/inboxos/REQUIREMENTS.md` v1.1 candidate section,
+  `.ciagent/inboxos/verify/v1.1-PHASE1-REPORT.md`.
+- **Next stage**: v1.2 candidates filed in `CI-LOG.md` `post_hoc_review.remaining_for_v1_2` (P1-1, P1-2, P2-1, P2-2).