docs: reflect V1-0 landed + V1 completion track active + resume map

- current-state.md: header bumped to 2026-04-22, live_sha 2712c5d,
  547 tests. New "V1-0 landed" section covers what merged, what the
  prod backfill did, and where the next phase stands.

- master-plan-status.md: new "Active - Engineering V1 Completion
  Track (started 2026-04-22)" section between Now and Next.
  Contains the 7-phase table with V1-0 marked done, V1-A gated,
  V1-B..V1-F pending. V1 removed from the "Next" section since it
  is now Active.

- DEV-LEDGER.md Orientation: two new pointers — active_track points
  to the completion plan + resume map; open_branches points to the
  R14 branch still awaiting Codex review.

- docs/plans/v1-resume-state.md (new): single-page "you are here"
  for any future session. Covers state of play, start-gates for
  V1-A, pre-flight checklist, phase map, parallel-safe work, do-nots,
  open findings, agreement protocol history, reference index.
  Designed to be cold-readable — no prior session context required.

No code changes.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

DEV-LEDGER.md

@@ -6,10 +6,10 @@
 
 ## Orientation
 
-- **live_sha** (Dalidou `/health` build_sha): `775960c` (verified 2026-04-16 via /health, build_time 2026-04-16T17:59:30Z)
+- **live_sha** (Dalidou `/health` build_sha): `2712c5d` (verified 2026-04-22 via Codex after V1-0 deploy; status=ok)
-- **last_updated**: 2026-04-18 by Claude (Phase 7A — Memory Consolidation "sleep cycle" V1 on branch, not yet deployed)
+- **last_updated**: 2026-04-22 by Claude (V1-0 write-time invariants landed + deployed + prod backfill complete)
-- **main_tip**: `999788b`
+- **main_tip**: `2712c5d`
-- **test_count**: 533 (prior 521 + 12 new wikilink/redlink tests)
+- **test_count**: 547 (prior 533 + 10 V1-0 invariant tests + 4 Codex-review regression tests)
 - **harness**: `17/18 PASS` on live Dalidou (p04-constraints expects "Zerodur" — retrieval content gap, not regression)
 - **vectors**: 33,253
 - **active_memories**: 84 (31 project, 23 knowledge, 10 episodic, 8 adaptation, 7 preference, 5 identity)
@@ -23,6 +23,8 @@
 - **capture_clients**: claude-code (Stop hook + cwd project inference), openclaw (before_agent_start + llm_output plugin, verified live)
 - **wiki**: http://dalidou:8100/wiki (browse), /wiki/projects/{id}, /wiki/entities/{id}, /wiki/search
 - **dashboard**: http://dalidou:8100/admin/dashboard (now shows pipeline health, interaction totals by client, all registered projects)
+- **active_track**: Engineering V1 Completion (started 2026-04-22). V1-0 landed (`2712c5d`), V1-A gated on soak (~2026-04-26) + density (100+ active memories, currently 84). Plan: `docs/plans/engineering-v1-completion-plan.md`. Resume map: `docs/plans/v1-resume-state.md`.
+- **open_branches**: `claude/r14-promote-400` at `3888db9` — P2 route fix (ValueError → 400), pending Codex review
 
 ## Active Plan
 
@@ -143,9 +145,11 @@ One branch `codex/extractor-eval-loop` for Day 1-5, a second `codex/retrieval-ha
 | R11 | Codex  | P2       | src/atocore/api/routes.py:773-845  | `POST /admin/extract-batch` still accepts `mode="llm"` inside the container and returns a successful 0-candidate result instead of surfacing that host-only LLM extraction is unavailable from this runtime. That is a misleading API contract for operators. | fixed        | Claude | 2026-04-12 | (pending)   |
 | R12 | Codex  | P2       | scripts/batch_llm_extract_live.py:39-190 | The host-side extractor duplicates the LLM system prompt and JSON parsing logic from `src/atocore/memory/extractor_llm.py`. It works today, but this is now a prompt/parser drift risk across the container and host implementations. | fixed        | Claude | 2026-04-12 | (pending)   |
 | R13 | Codex  | P2       | DEV-LEDGER.md:12                    | The new `286 passing` test-count claim is not reproducibly auditable from the current audit environments: neither Dalidou nor the clean worktree has `pytest` available. The claim may be true in Claude's dev shell, but it remains unverified in this audit. | fixed        | Claude | 2026-04-12 | (pending)   |
+| R14 | Codex  | P2       | src/atocore/api/routes.py (POST /entities/{id}/promote) | The HTTP `POST /entities/{id}/promote` route does not translate the new service-layer `ValueError("source_refs required: cannot promote a candidate with no provenance...")` into a 400. A legacy no-provenance candidate promoted through the API currently surfaces as a 500. Does not block V1-0 acceptance; tidy in a follow-up. | open         | Claude | 2026-04-22 |             |
 
 ## Recent Decisions
 
+- **2026-04-22** **V1-0 done: approved, merged, deployed, prod backfilled.** Codex pulled `f16cd52`, re-ran the two original probes (both pass), re-ran the three targeted regression suites (all pass). Squash-merged to main as `2712c5d`. Dalidou deployed via canonical deploy script; `/health` reports build_sha=`2712c5d2d03cb2a6af38b559664afd1c4cd0e050`, status=ok. Validated backup snapshot taken at `/srv/storage/atocore/backups/snapshots/20260422T190624Z` before backfill. Prod backfill: `--dry-run` found 31 active/superseded entities with no provenance; list reviewed and sane; live run updated 31 rows via the default `hand_authored=1` flag path; follow-up dry-run returned 0 rows remaining. Residual logged as R14 (P2): `POST /entities/{id}/promote` HTTP route doesn't translate the new service-layer `ValueError` into a 400 — legacy bad candidate promotes via the API return 500 instead. Does not block V1-0 acceptance. V1-0 closed. Next: V1-A (Q-001 subsystem-scoped variant + Q-6 integration). V1-A holds until the soak window ends ~2026-04-26 and the 100-memory density target is hit. *Approved + landed by:* Codex. *Ratified by:* Antoine.
 - **2026-04-22** **Engineering V1 Completion Plan — Codex sign-off (third round)**. Codex's third-round audit closed the remaining five open questions with concrete resolutions, patched inline in `docs/plans/engineering-v1-completion-plan.md`: (1) F-7 row rewritten with ground truth — schema + preserve-original + test coverage already exist (`graduated_to_entity_id` at `database.py:143-146`, `graduated` status in memory service, promote hook at `service.py:354-356,389-451`, tests at `test_engineering_v1_phase5.py:67-90`); **real gaps** are missing direct `POST /memory/{id}/graduate` route and spec's `knowledge→Fact` mismatch (no `fact` entity type exists; reconcile to `parameter` or similar); V1-E 2 → **3–4 days**; (2) Q-5 determinism reframed — don't stabilize the call to `datetime.now()`, inject regenerated timestamp + checksum as renderer inputs, remove DB iteration ordering dependencies; V1-D scope updated; (3) `project` vs `project_id` — doc note only, no rename, resolved; (4) total estimate 16.5–17.5 → **17.5–19.5 focused days** with calendar buffer on top; (5) "Minions" must not be canonized in D-3 release notes — neutral wording ("queued background processing / async workers") only. **Agreement reached**: Claude + Codex + Antoine aligned. V1-0 is ready to start once the current pipeline soak window ends (~2026-04-26) and the 100-memory density target is hit. *Patched by:* Codex. *Signed off by:* Codex ("with those edits, I'd sign off on the five questions"). *Accepted by:* Antoine. *Executor (V1-0 onwards):* Claude.
 - **2026-04-22** **Engineering V1 Completion Plan revised per Codex second-round file-level audit** — three findings folded in, all with exact file:line refs from Codex: (1) F-1 downgraded from ✅ to 🟡 — `extractor_version` and `canonical_home` missing from `Entity` dataclass and `entities` table per `engineering-v1-acceptance.md:45`; V1-0 scope now adds both fields via additive migration + doc note that `project` IS `project_id` per "fields equivalent to" spec wording; (2) F-2 replaced with ground-truth per-query status: 9 of 20 v1-required queries done (Q-004/Q-005/Q-006/Q-008/Q-009/Q-011/Q-013/Q-016/Q-017), 1 partial (Q-001 needs subsystem-scoped variant), 10 missing (Q-002/003/007/010/012/014/018/019/020); V1-A scope shrank to Q-001 shape fix + Q-6 integration (pillar queries already implemented); V1-C closes the 8 remaining new queries + Q-020 deferred to V1-D; (3) F-5 reframed — generic `conflicts` + `conflict_members` schema already present at `database.py:190`, no migration needed; divergence is detector body (per-type dispatch needs generalization) + routes (`/admin/conflicts/*` needs `/conflicts/*` alias). Total revised to 16.5–17.5 days, ~60 tests. Plan: `docs/plans/engineering-v1-completion-plan.md` at commit `ce3a878` (Codex pulled clean). Three of Codex's eight open questions now answered; remaining: F-7 graduation depth, mirror determinism, `project` rename question, velocity calibration, minions naming. *Proposed by:* Claude. *Reviewed by:* Codex (two rounds).
 - **2026-04-22** **Engineering V1 Completion Plan revised per Codex first-round review** — original six-phase order (queries → ingest → mirror → graduation → provenance → ops) rejected by Codex as backward: provenance-at-write (F-8) and conflict-detection hooks (F-5 minimal) must precede any phase that writes active entities. Revised to seven phases: V1-0 write-time invariants (F-8 + F-5 hooks + F-1 audit) as hard prerequisite, V1-A minimum query slice proving the model, V1-B ingest, V1-C full query catalog, V1-D mirror, V1-E graduation, V1-F full F-5 spec + ops + docs. Also softened "parallel with Now list" — real collision points listed explicitly; schedule shifted ~4 weeks to reflect that V1-0 cannot start during pipeline soak. Withdrew the "50–70% built" global framing in favor of the per-criterion gap table. Workspace sync note added: Codex's Playground workspace can't see the plan file; canonical dev tree is Windows `C:\Users\antoi\ATOCore`. Plan: `docs/plans/engineering-v1-completion-plan.md`. Awaiting Codex file-level audit once workspace syncs. *Proposed by:* Claude. *First-round review by:* Codex.
@@ -164,6 +168,8 @@ One branch `codex/extractor-eval-loop` for Day 1-5, a second `codex/retrieval-ha
 
 ## Session Log
 
+- **2026-04-22 Codex + Antoine (V1-0 closed)** Codex approved `f16cd52` after re-running both original probes (legacy-candidate promote + supersede hook — both correct) and the three targeted regression suites (`test_v1_0_write_invariants.py`, `test_engineering_v1_phase5.py`, `test_inbox_crossproject.py` — all pass). Squash-merged to main as `2712c5d` ("feat(engineering): enforce V1-0 write invariants"). Deployed to Dalidou via the canonical deploy script; `/health` build_sha=`2712c5d2d03cb2a6af38b559664afd1c4cd0e050` status=ok. Validated backup snapshot at `/srv/storage/atocore/backups/snapshots/20260422T190624Z` taken BEFORE prod backfill. Prod backfill of `scripts/v1_0_backfill_provenance.py` against live DB: dry-run found 31 active/superseded entities with no provenance, list reviewed and looked sane; live run with default `hand_authored=1` flag path updated 31 rows; follow-up dry-run returned 0 rows remaining → no lingering F-8 violations in prod. Codex logged one residual P2 (R14): HTTP `POST /entities/{id}/promote` route doesn't translate the new service-layer `ValueError` into 400 — legacy bad candidate promoted through the API surfaces as 500. Not blocking. V1-0 closed. **Gates for V1-A**: soak window ends ~2026-04-26; 100-active-memory density target (currently 84 active + the ~31 newly flagged ones — need to check how those count in density math). V1-A holds until both gates clear.
+
 - **2026-04-22 Claude (V1-0 patches per Codex review)** Codex audit of commit `cbf9e03` surfaced two P1 gaps + one P2 scope concern, all verified with code-level probes. **P1 #1**: `promote_entity` didn't re-check the F-8 invariant — a legacy candidate with empty `source_refs` and `hand_authored=0` could still promote to active, violating the plan's "invariant at both `create_entity` and `promote_entity`". Fixed: `promote_entity` at `service.py:365-379` now raises `ValueError("source_refs required: cannot promote a candidate with no provenance...")` before flipping status. Stays symmetric with the create-side error. **P1 #2**: `supersede_entity` was missing the F-5 hook the plan requires on every active-entity write path. The `supersedes` relationship rooted at the `superseded_by` entity can create a conflict the detector should catch. Fixed at `service.py:581-591`: calls `detect_conflicts_for_entity(superseded_by)` with fail-open per Q-3. **P2**: backfill script's `--invalidate-instead` flag queried both active AND superseded rows; invalidating already-superseded rows would collapse history. Fixed at `scripts/v1_0_backfill_provenance.py:52-63`: `--invalidate-instead` now scopes to `status='active'` only (default flag-hand_authored mode stays broad as it's additive/non-destructive). Help text tightened to make the destructive posture explicit. **Four new regression tests** in `test_v1_0_write_invariants.py`: (1) `test_promote_rejects_legacy_candidate_without_provenance` — directly inserts a legacy candidate and confirms promote raises + row stays candidate; (2) `test_promote_accepts_candidate_flagged_hand_authored` — symmetry check; (3) `test_supersede_runs_conflict_detection_on_new_active` — monkeypatches detector, confirms hook fires on `superseded_by`; (4) `test_supersede_hook_fails_open` — Q-3 check for supersede path. **Test count**: 543 → 547 (+4 regression). Full suite `547 passed in 81.07s`. Next: commit patches on branch, push, Codex re-review.
 
 - **2026-04-22 Claude (V1-0 landed on branch)** First V1 completion phase done on branch `claude/v1-0-write-invariants`. **F-1 schema remediation**: added `extractor_version`, `canonical_home`, `hand_authored` columns to `entities` via idempotent ALTERs in both `_apply_migrations` (`database.py:148-170`) and `init_engineering_schema` (`service.py:95-139`). CREATE TABLE also updated so fresh DBs get the columns natively. New `_table_exists` helper at `database.py:378`. `Entity` dataclass gains the three fields with sensible defaults. `EXTRACTOR_VERSION = "v1.0.0"` module constant at top of `service.py`. `_row_to_entity` tolerates rows without the new columns so tests predating V1-0 still pass. **F-8 provenance enforcement**: `create_entity` raises `ValueError("source_refs required: ...")` when called without non-empty source_refs AND without `hand_authored=True`. New kwargs `hand_authored: bool = False` and `extractor_version: str | None = None` threaded through `service.create_entity`, the `EntityCreateRequest` Pydantic model, the API route, and the wiki `/wiki/new` form body (form writes `hand_authored: true` since human entries are hand-authored by definition). **F-5 hook on active create**: `create_entity(status="active")` now calls `detect_conflicts_for_entity` with fail-open per `conflict-model.md:256` (errors log warning, write still succeeds). The promote path's existing hook at `service.py:400-404` was kept as-is. **Doc note** added to `engineering-ontology-v1.md` recording that `project` IS the `project_id` per "fields equivalent to" wording. **Backfill script** at `scripts/v1_0_backfill_provenance.py` — idempotent, defaults to flagging no-provenance active entities as `hand_authored=1`, supports `--dry-run` and `--invalidate-instead`. **Tests**: 10 new in `tests/test_v1_0_write_invariants.py` covering F-1 fields, F-8 raise path, F-8 hand_authored bypass, F-5 active-create hook, F-5 candidate-no-hook, Q-3 fail-open on detector error, Q-4 partial (scope_only=active excludes candidates). **Test fixes**: three pre-existing tests adapted — `test_requirement_name_conflict_detected` + `test_conflict_resolution_dismiss_leaves_entities_alone` now read from `list_open_conflicts` because the V1-0 hook records the conflict at create-time (detector dedup returns [] on re-run); `test_api_post_entity_with_null_project_stores_global` sends `hand_authored: true` since the fixture has no source_refs. **conftest.py monkeypatch**: wraps `create_entity` so tests missing both source_refs and hand_authored default to `hand_authored=True` (reasonable since tests author their own fixture data). Production paths (API route, wiki form, graduation scripts) all pass explicit values and are unaffected by the monkeypatch. **Test count**: 533 → 543 (+10), full suite `543 passed in 77.86s`. **Not yet**: commit + push + Codex review + deploy. **Branch**: `claude/v1-0-write-invariants`.

docs/current-state.md

@@ -1,6 +1,31 @@
-# AtoCore — Current State (2026-04-19)
+# AtoCore — Current State (2026-04-22)
 
-Live deploy: `877b97e` · Dalidou health: ok · Harness: 17/18.
+Live deploy: `2712c5d` · Dalidou health: ok · Harness: 17/18 · Tests: 547 passing.
+
+## V1-0 landed 2026-04-22
+
+Engineering V1 completion track has started. **V1-0 write-time invariants**
+merged and deployed: F-1 shared-header fields (`extractor_version`,
+`canonical_home`, `hand_authored`) added to `entities`, F-8 provenance
+enforcement at both `create_entity` and `promote_entity`, F-5 synchronous
+conflict-detection hook on every active-entity write path (create, promote,
+supersede) with Q-3 fail-open. Prod backfill ran cleanly — 31 legacy
+active/superseded entities flagged `hand_authored=1`, follow-up dry-run
+returned 0 remaining rows. Test count 533 → 547 (+14).
+
+R14 (P2, non-blocking): `POST /entities/{id}/promote` route fix translates
+the new `ValueError` into 400. Branch `claude/r14-promote-400` pending
+Codex review + squash-merge.
+
+**Next in the V1 track:** V1-A (minimal query slice + Q-6 killer-correctness
+integration). Gated on pipeline soak (~2026-04-26) + 100+ active memory
+density target. See `docs/plans/engineering-v1-completion-plan.md` for
+the full 7-phase roadmap and `docs/plans/v1-resume-state.md` for the
+"you are here" map.
+
+---
+
+## Snapshot from previous update (2026-04-19)
 
 ## The numbers
 

docs/master-plan-status.md

@@ -168,16 +168,40 @@ These are the current practical priorities.
    "Zerodur" for p04 constraint queries. Investigate if it's a missing
    memory or retrieval ranking issue.
 
+## Active — Engineering V1 Completion Track (started 2026-04-22)
+
+The Engineering V1 sprint moved from **Next** to **Active** on 2026-04-22.
+The discovery from the gbrain review was that V1 entity infrastructure
+had been built incrementally already; the sprint is a **completion** plan
+against `engineering-v1-acceptance.md`, not a greenfield build. Full plan:
+`docs/plans/engineering-v1-completion-plan.md`. "You are here" single-page
+map: `docs/plans/v1-resume-state.md`.
+
+Seven phases, ~17.5–19.5 focused days, runs in parallel with the Now list
+where surfaces are disjoint, pauses when they collide.
+
+| Phase | Scope | Status |
+|---|---|---|
+| V1-0 | Write-time invariants: F-1 header fields + F-8 provenance enforcement + F-5 hook on every active-entity write + Q-3 flag-never-block | ✅ done 2026-04-22 (`2712c5d`) |
+| V1-A | Minimum query slice: Q-001 subsystem-scoped variant + Q-6 killer-correctness integration test on p05-interferometer | 🟡 gated — starts when soak (~2026-04-26) + density (100+ active memories) gates clear |
+| V1-B | KB-CAD + KB-FEM ingest (`POST /ingest/kb-cad/export`, `POST /ingest/kb-fem/export`) + D-2 schema docs | pending V1-A |
+| V1-C | Close the remaining 8 queries (Q-002/003/007/010/012/014/018/019; Q-020 to V1-D) | pending V1-B |
+| V1-D | Full mirror surface (3 spec routes + regenerate + determinism + disputed + curated markers) + Q-5 golden file | pending V1-C |
+| V1-E | Memory→entity graduation end-to-end + remaining Q-4 trust tests | pending V1-D (note: collides with memory extractor; pauses for multi-model triage work) |
+| V1-F | F-5 detector generalization + route alias + O-1/O-2/O-3 operational + D-1/D-3/D-4 docs | finish line |
+
+R14 (P2, non-blocking): `POST /entities/{id}/promote` route returns 500
+on the new V1-0 `ValueError` instead of 400. Fix on branch
+`claude/r14-promote-400`, pending Codex review.
+
 ## Next
 
-These are the next major layers after the current stabilization pass.
+These are the next major layers after V1 and the current stabilization pass.
 
 1. Phase 6 AtoDrive — clarify Google Drive as a trusted operational
    source and ingest from it
 2. Phase 13 Hardening — Chroma backup policy, monitoring, alerting,
    failure visibility beyond log files
-3. Engineering V1 implementation sprint — once knowledge density is
-   sufficient and the pipeline feels boring and dependable
 
 ## Later
 

docs/plans/v1-resume-state.md

@@ -0,0 +1,161 @@
+# V1 Completion — Resume State
+
+**Last updated:** 2026-04-22 (after V1-0 landed + R14 branch pushed)
+**Purpose:** single-page "you are here" so any future session can pick up
+the V1 completion sprint without re-reading the full plan history.
+
+## State of play
+
+- **V1-0 is DONE.** Merged to main as `2712c5d`, deployed to Dalidou,
+  prod backfill ran cleanly (31 legacy entities flagged
+  `hand_authored=1`, zero violations remaining).
+- **R14 is on a branch.** `claude/r14-promote-400` at `3888db9` —
+  HTTP promote route returns 400 instead of 500 on V1-0 `ValueError`.
+  Pending Codex review + squash-merge. Non-blocking for V1-A.
+- **V1-A is next but GATED.** Doesn't start until both gates clear.
+
+## Start-gates for V1-A
+
+| Gate | Condition | Status as of 2026-04-22 |
+|---|---|---|
+| Soak | Four clean nightly cycles since F4 confidence-decay first real run 2026-04-19 | Day 3 of 4 — expected clear around **2026-04-26** |
+| Density | 100+ active memories | 84 active as of last ledger update — need +16. Lever: `scripts/batch_llm_extract_live.py` against 234-interaction backlog |
+
+**When both are green, start V1-A.** If only one is green, hold.
+
+## Pre-flight checklist when resuming
+
+Before opening the V1-A branch, run through this in order:
+
+1. `git checkout main && git pull` — make sure you're at the tip
+2. Check `DEV-LEDGER.md` **Orientation** for current `live_sha`, `test_count`, `active_memories`
+3. Check `/health` on Dalidou returns the same `build_sha` as Orientation
+4. Check the dashboard for pipeline health: http://dalidou:8100/admin/dashboard
+5. Confirm R14 branch status — either merged or explicitly deferred
+6. Re-read the two core plan docs:
+   - `docs/plans/engineering-v1-completion-plan.md` — the full 7-phase plan
+   - `docs/architecture/engineering-v1-acceptance.md` — the acceptance contract
+7. Skim the relevant spec docs for the phase you're about to start:
+   - V1-A: `engineering-query-catalog.md` (Q-001 + Q-006/Q-009/Q-011 killer queries)
+   - V1-B: `tool-handoff-boundaries.md` (KB-CAD/KB-FEM export shapes)
+   - V1-C: `engineering-query-catalog.md` (all remaining v1-required queries)
+   - V1-D: `human-mirror-rules.md` (mirror spec end-to-end)
+   - V1-E: `memory-vs-entities.md` (graduation flow)
+   - V1-F: `conflict-model.md` (generic slot-key detector)
+
+## What V1-A looks like when started
+
+**Branch:** `claude/v1-a-pillar-queries`
+
+**Scope (~1.5 days):**
+- **Q-001 shape fix.** Add a subsystem-scoped variant of `system_map()`
+  matching `GET /entities/Subsystem/<id>?expand=contains` per
+  `engineering-query-catalog.md:71`. The project-wide version stays
+  (it serves Q-004).
+- **Q-6 integration test.** Seed p05-interferometer with five cases:
+  1 satisfying Component, 1 orphan Requirement, 1 Decision on flagged
+  Assumption, 1 supported ValidationClaim, 1 unsupported ValidationClaim.
+  One test asserting Q-006 / Q-009 / Q-011 return exactly the expected
+  members.
+- The four "pillar" queries (Q-001, Q-005, Q-006, Q-017) already work
+  per Codex's 2026-04-22 audit. V1-A does NOT re-implement them —
+  V1-A verifies them on seeded data.
+
+**Acceptance:** Q-001 subsystem-scoped variant + Q-6 integration test both
+green. F-2 moves from 🟡 partial to slightly-less-partial.
+
+**Estimated tests added:** ~4 (not ~12 — V1-A scope shrank after Codex
+confirmed most queries already work).
+
+## Map of the remaining phases
+
+```
+V1-0 ✅  write-time invariants          landed 2026-04-22 (2712c5d)
+        ↓
+V1-A 🟡 minimum query slice            gated on soak + density (~1.5d when started)
+        ↓
+V1-B    KB-CAD/KB-FEM ingest + D-2     ~2d
+        ↓
+V1-C    close 8 remaining queries      ~2d
+        ↓
+V1-D    full mirror + determinism      ~3-4d (biggest phase)
+        ↓
+V1-E    graduation + trust tests       ~3-4d (pauses for multi-model triage)
+        ↓
+V1-F    F-5 generalization + ops + docs ~3d — V1 done
+```
+
+## Parallel work that can run WITHOUT touching V1
+
+These are genuinely disjoint surfaces; pick any of them during the gate
+pause or as scheduling allows:
+
+- **Density batch-extract** — *required* to unblock V1-A. Not optional.
+- **p04-constraints harness fix** — retrieval-ranking change, fully
+  disjoint from entities. Safe to do anywhere in the V1 track.
+- **Multi-model triage (Phase 11 entry)** — memory-side work, disjoint
+  from V1-A/B/C/D. **Pause before V1-E starts** because V1-E touches
+  memory module semantics.
+
+## What NOT to do
+
+- Don't start V1-A until both gates are green.
+- Don't touch the memory extractor write path while V1-E is open.
+- Don't name the rejected "Minions" plan in any doc — neutral wording
+  only ("queued background processing / async workers") per Codex
+  sign-off.
+- Don't rename the `project` field to `project_id` — Codex + Antoine
+  agreed it stays as `project`, with a doc note in
+  `engineering-ontology-v1.md` that this IS the project_id per spec.
+
+## Open review findings
+
+| id | severity | summary | status |
+|---|---|---|---|
+| R14 | P2 | `POST /entities/{id}/promote` returns 500 on V1-0 `ValueError` instead of 400 | fixed on branch `claude/r14-promote-400`, pending Codex review |
+
+Closed V1-0 findings: P1 "promote path allows provenance-less legacy
+candidates" (service.py:365-379), P1 "supersede path missing F-5 hook"
+(service.py:581-591), P2 "`--invalidate-instead` backfill too broad"
+(v1_0_backfill_provenance.py:52-63). All three patched and approved in
+the squash-merge to `2712c5d`.
+
+## How agreement between Claude + Codex has worked so far
+
+Three review rounds before V1-0 started + three during implementation:
+
+1. **Rejection round.** Claude drafted a gbrain-inspired "Phase 8
+   Minions + typed edges" plan; Codex rejected as wrong-packaging.
+   Record: `docs/decisions/2026-04-22-gbrain-plan-rejection.md`.
+2. **Completion-plan rewrite.** Claude rewrote against
+   `engineering-v1-acceptance.md`. Codex first-round review fixed the
+   phase order (provenance-first).
+3. **Per-file audit.** Codex's second-round audit found F-1 / F-2 /
+   F-5 gaps, all folded in.
+4. **Sign-off round.** Codex's third-round review resolved the five
+   remaining open questions inline and signed off: *"with those edits,
+   I'd sign off on the five questions."*
+5. **V1-0 review.** Codex found two P1 gaps (promote re-check missing,
+   supersede hook missing) + one P2 (backfill scope too broad). All
+   three patched. Codex re-ran probes + regression suites, approved,
+   squash-merged.
+6. **V1-0 deploy + prod backfill.** Codex deployed + ran backfill,
+   logged R14 as P2 residual.
+
+Protocol has been: Claude writes, Codex audits, human Antoine ratifies.
+Continue this for V1-A onward.
+
+## References
+
+- `docs/plans/engineering-v1-completion-plan.md` — full 7-phase plan
+- `docs/decisions/2026-04-22-gbrain-plan-rejection.md` — prior rejection
+- `docs/architecture/engineering-ontology-v1.md` — V1 ontology (18 predicates)
+- `docs/architecture/engineering-query-catalog.md` — Q-001 through Q-020 spec
+- `docs/architecture/engineering-v1-acceptance.md` — F/Q/O/D acceptance table
+- `docs/architecture/promotion-rules.md` — candidate → active flow
+- `docs/architecture/conflict-model.md` — F-5 spec
+- `docs/architecture/human-mirror-rules.md` — V1-D spec
+- `docs/architecture/memory-vs-entities.md` — V1-E spec
+- `docs/architecture/tool-handoff-boundaries.md` — V1-B KB-CAD/KB-FEM
+- `docs/master-plan-status.md` — Now / Active / Next / Later
+- `DEV-LEDGER.md` — Orientation + Open Review Findings + Session Log