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Inception Worklog — Turnfile (SNAP)

References:

  • docs/PROTOCOL_CORE.md
  • inception/SESSION_CHARTER.md

Now Working (Codex): Session 10 closed. Boot file archived/refreshed; skill file hardened; pre-cleanup guardrails posted and acked. Now Working (Claude): Session 11 closed. All P2-D tasks done. Skill file v0.2.0 hardened. MSG-047 acked (5 guardrails + 3 additions). Idle. Maintainer Focus: Direct inception→examples migration (Claude's next task) and confirm session 12 scope. Next Review Checkpoint: Next session start — Claude executes inception→examples migration per MSG-047 guardrails.

Decision Index

Decision Owner Timestamp Section
Establish inception/ as active engagement workspace; keep docs/ + templates/ canonical and examples/ historical Maintainer 2026-02-08 Session 0 kickoff
Run notification protocol pilot in inception/ before canonical docs changes Maintainer 2026-02-08 Session 1 planning kickoff
Prepare counsel-facing legal landscape summary and sharpen README intent toward protocol-standard differentiation Maintainer 2026-02-08 Session 2 legal and positioning
Mailbox pilot adopts newest-first compact layout with archive-backed long-form history (Markdown remains canonical) Maintainer 2026-02-08 Session 3 mailbox format refinement
Start PRD track in inception docs for maintainer interaction model and Rust viewer MVP Maintainer 2026-02-08 Session 4 PRD kickoff
Repo published to GitHub; PRD sequence 003→007 approved; parallel drafting assigned (Claude → PRD-003, Codex → PRD-004) Maintainer 2026-02-08 Session 5 repo publish + PRD drafting
Adopt payload-first cross-sandbox handoff policy while keeping inception/ local-only; require inline payload + revision token for cross-agent content review requests Maintainer 2026-02-08 Session 5 sandbox-sync policy
Add PRD-008 to formalize cross-sandbox payload-first handoff contract learned during PRD reconciliation workflow Maintainer 2026-02-08 Session 5 process-retro follow-up
Start next PRD wave: Codex drafts PRD-005 and Claude drafts PRD-006; apply communication preflight improvements before parallel drafting Maintainer 2026-02-08 Session 5 PRD-005/006 kickoff
Add PRD-007 to formalize trust/provenance semantics after process reflection and cross-PRD reconciliation lessons Maintainer 2026-02-08 Session 6 trust-layer follow-up
Harden communication protocol for parallel cycles with required Closure owner, payload Review scope, and explicit interface-delta blocks Maintainer 2026-02-08 Session 6 communication hardening
Add PRD-010 to reduce shared-file write collisions with lock + transaction rules for mailbox/worklog/open-questions edits Maintainer 2026-02-08 Session 7 process-hardening follow-up
Add PRD-011 to standardize session resumption handoff and WORKLOG compaction for stateless agent context recovery Claude 2026-02-08 Session 7 process-reflection follow-up
WORKLOG compaction: Sessions 0–4 archived to inception/WORKLOG_ARCHIVE.md per PRD-011 R5 Claude (maintainer-directed) 2026-02-08 Session 8 compaction
WORKLOG compaction: Sessions 5–8 archived to inception/WORKLOG_ARCHIVE.md per PRD-011 R5 Claude (maintainer-directed) 2026-02-08 Session 10 compaction
OQ-026 resolved: trust anomaly promotion-blocking framework accepted (quality→block, process→allow/conditional) Maintainer 2026-02-08 Session 10 OQ-026 resolution
WORKLOG compaction: Session 9 archived to inception/WORKLOG_ARCHIVE.md per PRD-011 R5 Claude (maintainer-directed) 2026-02-08 Session 10 closeout compaction

Archived Sessions

Sessions 0–9 have been archived to inception/WORKLOG_ARCHIVE.md per PRD-011 R5 compaction trigger.

Session Date Summary
0 2026-02-08 Inception workspace bootstrap. Handshake signed.
1 2026-02-08 Notification protocol pilot designed. PLANNING/MAILBOX created.
2 2026-02-08 Legal summary. README positioning. Protocol review (MSG-001/002). Pre-commit items.
3 2026-02-08 Mailbox migrated to newest-first compact format. JSON projection tool.
4 2026-02-08 PRD-001/002 created. Pre-commit fixes. PRD sequence 003-007 proposed.
5 2026-02-08 Repo published. PRD-003/004 drafted + cross-reviewed + reconciled. PRD-008/009 drafted. OQ registry created. Payload-first policy adopted. Comm protocol v0.3→v0.5.
6 2026-02-08 PRD-005/006/007 drafted. Interface contracts established. OQ-017–028 added. Comm protocol hardened (v0.5). Mailbox JSON exporter bugfix.
7 2026-02-08 PRD ranking + work-through sequence. PRD-003/004 finalized. Phase 1 cross-review (PRD-008 by Claude, PRD-009 by Codex). PRD-010/011 drafted. OQ-029–036 resolved. Phase 1 batch ready.
8 2026-02-08 Phase 1 maintainer review document. WORKLOG compaction (sessions 0–4). Phase 1 approved. Phase 2 reshaping: Vision.md + Turnfile concepts. OQ-037–040 resolved.
9 2026-02-08 Phase 2 launched. Vision.md v2 + PRD-013 draft + TURNFILE.yaml skeleton. PRD-012 R2 re-scope + cross-review. Phase 2 resequence consensus (MSG-031). P2-A OQ sync (5 OQs). Codex PRD-013 cross-review accepted (R1.3 leases + R1.4 non-temporal).

Session 10 — 2026-02-08

WORKLOG compaction (maintainer-directed)

2026-02-08 — Claude compacted WORKLOG per PRD-011 R5 trigger (was ~1095 lines, trigger at 500). Sessions 5–8 archived to inception/WORKLOG_ARCHIVE.md. Post-compaction: ~407 lines.

Claude: PRD-005 cross-review — MSG-032 posted (Track L item #1)

2026-02-08 — Claude completed formal cross-review of PRD-005 (Protocol Data Schema + Compatibility) as P2-B Track L item #1. 6 findings posted in MSG-032 to Codex. Review is Turnfile-aware per PRD-013.

Review outcome: Revise then accept. 2 required fixes, 3 recommendations, 1 informational note.

Key findings:

  1. [Required] R3.3 status enum missing blocked (added to PRD-003 R1 via OQ-004)
  2. [Required] Dependencies missing PRD-013 (bidirectional schema location reference)
  3. [Recommended] R2 body text doesn't reflect OQ-017 date-stamped compatibility labels
  4. [Recommended] R4 entry IDs don't reflect OQ-019 sequential ID resolution
  5. [Recommended] Add Turnfile scope note (coordination artifact ≠ projection schema)
  6. [Note] R8.4 cross-reference stability flagged for P2-C awareness
Handoff: PRD-005 cross-review + WORKLOG compaction
Owner: Claude
Status: Complete
Changed files:
  - inception/MAILBOX.md (MSG-032 posted to Codex; inbox snapshot updated; open queue updated)
  - inception/WORKLOG.md (status block + session 10 entries + compaction decision in index)
  - inception/WORKLOG_ARCHIVE.md (sessions 5–8 appended with summary rows)
  - inception/TURNFILE.yaml (revision 19; Claude active; session 10; cross-review-prd-005 claimed)
Tests run: none (documentation/review only)
Risks/assumptions:
  - PRD-005 findings are non-blocking for Claude's remaining Track L items
  - Codex may be working on PRD-010 re-scope in parallel; no lock conflict on shared files
Blocking items: none
Next owner: Codex (respond to MSG-032), Claude (continue Track L: PRD-013 cleanup)

Claude: MSG-033/034 reviewed and responded (Track C acceptance + PRD-005 closure)

2026-02-08 — Claude reviewed and responded to both Codex messages from Track C execution:

MSG-034 (PRD-005 findings applied) — Acknowledged:

  • Verified all 5 MSG-032 findings correctly applied in PRD-005 file.
  • blocked in R3 status enum, PRD-013 in dependencies, date-stamped labels in R2.4, sequential IDs in R4.3, Turnfile scope note in R8.
  • PRD-005 cross-review cycle complete. MSG-032 closed.

MSG-033 (Track C payload: PRD-010 + PRD-006) — Applied:

  • PRD-010 re-scope accepted: Lock ledger migrated to TURNFILE.yaml. Revision-based leases consistent with PRD-013 R1.3. Deterministic precedence (CAS pattern). 9-step transaction sequence. No clock tie-breaking in recovery. Non-goal #5 mirrors PRD-013 R1.4.
  • PRD-006 deltas accepted: R2a.7 promotion-blocker disposition for OQ-026. R2b.6 compact archival scope. R3 payload template upgraded. R4b compact operational subset. Interaction table extended. D-001–D-006 interface delta register.
  • No counter-recommendations on either document. No additional P2-C deltas needed at this time.

Mailbox state after response:

  • Claude unread: 0 (was 2)
  • MSG-032: closed (full review cycle complete)
  • MSG-033: actioned (Track C accepted)
  • MSG-034: acknowledged (verification complete)
  • Open queue: empty
Handoff: MSG-033/034 response + Track C acceptance
Owner: Claude
Status: Complete
Changed files:
  - inception/MAILBOX.md (MSG-033 actioned, MSG-034 acked, MSG-032 closed; inbox/queue/closed summary updated)
  - inception/WORKLOG.md (status block + this entry)
  - inception/TURNFILE.yaml (revision 20; cross-review-prd-005 notes updated; cross-review-prd-006 status updated)
Tests run: none (review/communication only)
Risks/assumptions:
  - Track C deliverables accepted without counter; no rework needed
  - Remaining Track L items may surface additional P2-C deltas
Blocking items: none
Next owner: Claude (continue Track L: PRD-013 cleanup, PRD-011 update, PRD-007 cross-review, OQ-026 frame)

Claude: P2-B Track L items #2-4 complete + OQ-026 worked-example frame

2026-02-08 — Claude completed Track L items #2-4 and drafted the OQ-026 worked-example frame.

Track L item #2 — PRD-013 owner cleanup:

  • Replaced 3 HTML comment blocks (resolved Vision.md dependency notes) with clean inline vision-alignment notes
  • Marked milestones M3 (Turnfile created) and M4 (pilot session) complete with evidence
  • Annotated exit criteria with progress status (3 of 6 met, 2 pending, 1 in progress)
  • Extended R8 integration table with PRD-006 and PRD-007 rows

Track L item #3 — PRD-011 update:

  • Updated PRD-010 references from "if adopted" to "Turnfile lease-lock protocol" (reflecting PRD-010 re-scope)
  • Marked milestones M0, M1, M2, M4 complete with evidence (M3 cross-agent resumption still pending)

Track L item #4 — PRD-007 cross-review:

  • Added Turnfile as provenance data source (R1.5: coordination events; R2.5: revision linkage for causal ordering)
  • Added PRD-005/PRD-013 scope boundary note (R7.4: projection schemas vs coordination state)
  • Added PRD-010 (#7) and PRD-013 (#8) to dependencies
  • Updated OQ-026 annotation: PRD-006 R2a.7 now defines the disposition model (allow|block|conditional)
  • Extended coordination plan section to include PRD-010/013 interfaces

Track L item #5 — OQ-026 worked-example frame:

The maintainer deferred OQ-026 ("Which trust anomalies should block canonical promotion?") pending worked examples. PRD-006 R2a.7 now requires explicit maintainer disposition (allow|block|conditional) for deferred promotion-relevant trust anomalies. The following worked examples frame the decision surface:

Example A: Repeated SLA misses during review cycle

  • Scenario: Agent B consistently acknowledges Agent A's cross-review messages 2-3 revision cycles late (beyond PRD-003 SLA window). Agent B's PRD is otherwise well-reviewed and complete.
  • Provenance evidence: sla_missed events in trust signal catalog (PRD-007 R3.1, R4.1).
  • Question: Does process-delay anomaly block the artifact's promotion?
  • Expected disposition: Allow. SLA misses reflect process behavior, not artifact quality. The artifact itself passed cross-review and maintainer approval gates (R2a.1-R2a.4). Process reliability is a governance concern addressed via R5 corrective actions, not a promotion blocker.

Example B: Payload compliance gap (missing revision token)

  • Scenario: Agent posts a review finding without a revision token (PRD-008 violation). The finding is substantively correct, accepted, and applied. The reviewed artifact is now ready for promotion.
  • Provenance evidence: payload_invalid event (PRD-007 R4.2). Provenance chain has a broken link at the review handoff.
  • Question: Does a process violation on the delivery vehicle block promotion of the content?
  • Expected disposition: Conditional. The artifact is sound, but the provenance chain has a gap. Conditional approval: agent must retroactively add the revision token to the mailbox record (or maintainer accepts the gap as a documented exception) before promotion executes.

Example C: Unlinked decision in WORKLOG

  • Scenario: A maintainer decision was applied to a PRD (e.g., OQ resolution applied to requirements text), but the WORKLOG decision index entry is missing. The PRD is otherwise fully validated.
  • Provenance evidence: decision_unlinked event (PRD-007 R4.4). Cross-reference audit (R2a.5) would catch this.
  • Question: Does missing decision linkage block promotion?
  • Expected disposition: Conditional. The decision was made and applied, but the governance record is incomplete. Conditional approval: add the decision index entry before promotion executes. This is a bookkeeping fix, not a substantive blocker.

Example D: Relay ambiguity in provenance chain

  • Scenario: During a cross-agent review relay (Agent A's finding relayed by maintainer to Agent B), the relay paraphrases rather than quoting. Agent B acts on the paraphrase. The resulting artifact change is substantively correct.
  • Provenance evidence: relay_ambiguous event (PRD-007 R4.5). Provenance chain has interpretive uncertainty at the relay point.
  • Question: Does relay ambiguity block the promoted artifact?
  • Expected disposition: Allow. The content outcome is correct. Relay ambiguity is a process signal for PRD-007 R5 governance review (improve relay discipline), not an artifact quality issue. If the relay caused a substantive error, that would be caught by the cross-review gate (R2a.2).

Proposed decision framework: Based on these examples, a consistent pattern emerges:

Anomaly type Artifact quality affected? Typical disposition
Process delay (SLA miss) No Allow
Delivery format gap (missing rev token) No, but provenance gap Conditional (fix bookkeeping)
Governance record gap (unlinked decision) No, but audit trail incomplete Conditional (fix bookkeeping)
Relay ambiguity Only if content error resulted Allow (if content correct) / Block (if content error)
Substantive review contradiction Yes Block
Unresolved cross-agent dispute Yes Block

Ask: Maintainer, does this framework align with your intent for OQ-026? If so, we can resolve OQ-026 with: "Trust anomalies that affect artifact quality (substantive contradictions, unresolved disputes) block promotion. Process anomalies (SLA, format, relay) receive conditional or allow disposition depending on whether a bookkeeping fix is needed."

Handoff: P2-B Track L items #2-5 complete
Owner: Claude
Status: Complete
Changed files:
  - inception/docs/PRD-013-turnfile-coordination-format.md (vision comments→inline notes, milestones, exit criteria, R8 table)
  - inception/docs/PRD-011-session-resumption-contract.md (PRD-010 refs, milestones)
  - inception/docs/PRD-007-trust-provenance-layer.md (Turnfile integration: R1.5, R2.5, R7.4, deps, OQ-026 annotation, coordination plan)
  - inception/TURNFILE.yaml (revision 20; tasks claimed/completed; SIG-004)
  - inception/WORKLOG.md (status block + this entry)
  - inception/MAILBOX.md (MSG-033 actioned, MSG-034 acked, MSG-032 closed)
Tests run: none (documentation/review only)
Risks/assumptions:
  - PRD-007 changes are Turnfile-integration additions, not restructuring; Codex can validate at P2-C
  - OQ-026 worked examples are a decision frame for maintainer, not a resolution; maintainer must decide
  - MSG-035 from Codex (PRD-014/015/016 OQ sync) received but not yet reviewed
Blocking items:
  - OQ-026 resolution requires maintainer decision on framework
Next owner: Maintainer (OQ-026 decision), Claude (ack MSG-035, then P2-C preparation)

Claude: OQ sync (7 resolved) + PRD-014/015/016 cross-review (MSG-036)

2026-02-08 — Maintainer annotated OQ-026 + OQ-045–050 in PRD files. Claude applied all 7 resolutions to OQ registry and PRD OQ sections. Then cross-reviewed PRD-014/015/016.

OQ sync:

  • OQ-026 → resolved (trust anomaly framework accepted)
  • OQ-045 → resolved (freeform reflection, under 100 chars)
  • OQ-046 → resolved (globally monotonic boot archive naming)
  • OQ-047 → resolved (one peer evaluator sufficient)
  • OQ-048 → resolved (test fixtures in docs/ immediately)
  • OQ-049 → resolved (numeric context_saturation threshold)
  • OQ-050 → resolved (both WORKLOG + machine-readable)
  • OQ registry state: 0 active, 0 deferred, 52 resolved.

PRD-014/015/016 cross-review (MSG-036):

  • PRD-014: Accept with 2 recommendations (add PRD-008 dep, note archive path convention)
  • PRD-015: Accept with 2 recommendations (add PRD-007 dep, map paused→Turnfile status)
  • PRD-016: Accept with 3 recommendations (apply OQ-049 to R2 body, apply OQ-050 to R8 body, add PRD-010 dep)
  • All recommendations are P2 non-blocking.
Handoff: OQ sync + PRD-014/015/016 cross-review
Owner: Claude
Status: Complete
Changed files:
  - inception/OPEN_QUESTIONS.md (7 OQs resolved: OQ-026 + OQ-045–050)
  - inception/docs/PRD-007-trust-provenance-layer.md (OQ-026 resolved in OQ section)
  - inception/docs/PRD-014-session-closeout-boot-handoff-contract.md (OQ-045/046 resolved)
  - inception/docs/PRD-015-agent-onboarding-vetting-contract.md (OQ-047/048 resolved)
  - inception/docs/PRD-016-session-rotation-trigger-contract.md (OQ-049/050 resolved)
  - inception/MAILBOX.md (MSG-036 posted; inbox/queue updated)
  - inception/WORKLOG.md (status block + this entry)
Tests run: none (review/OQ sync only)
Risks/assumptions:
  - PRD-014/015/016 are non-blocking for P2-C
  - All recommendations are P2; Codex can apply or counter
Blocking items: none
Next owner: Codex (respond to MSG-036 + complete Track L review), then both agents (P2-C gate)

Claude: P2-B complete — MSG-036 closed, P2-C readiness assessment

2026-02-08 — Codex completed Track L review and closed MSG-036 with all 7 recommendations applied to PRD-014/015/016. Additional consistency fixes applied during review: PRD-011 AC#2 read-count updated, OQ registry resolved-count corrected to 50, WORKLOG status block aligned. Both P2-B tracks are now complete.

P2-B completion summary:

Track Owner Deliverables Status
Track C Codex PRD-010 Turnfile lock re-scope, PRD-006 cross-review + interface deltas (D-001–D-006) ✓ Complete
Track L Claude PRD-005 cross-review, PRD-013 cleanup, PRD-011 update, PRD-007 cross-review, OQ-026 frame ✓ Complete
Cross-review Both Track C reviewed by Claude (MSG-033), Track L reviewed by Codex (MSG-036 reply) ✓ Complete
PRD-014/015/016 Both Codex drafted, Claude cross-reviewed, Codex applied all recommendations ✓ Complete

P2-C readiness assessment: All PRDs in scope (PRD-005/006/007/010/011/013) have been cross-reviewed by both agents with all findings applied. Interface deltas D-001–D-006 are registered in PRD-006. No open questions remain (0 active, 0 deferred, 50 resolved). New PRDs (014/015/016) are reconciled and non-blocking.

WORKLOG compaction note: WORKLOG body is ~620 lines, exceeding the 500-line trigger (PRD-011 R5). Compaction of session 9 entries recommended before P2-C gate work begins. Awaiting maintainer direction.

New protocol rule adopted: Mailbox check first and last on every turn; unread=0 before turn completion. Codex adding to PRD-012 if non-duplicative.

Handoff: P2-B completion + P2-C readiness assessment
Owner: Claude
Status: Complete
Changed files:
  - inception/WORKLOG.md (status block + this entry)
  - inception/TURNFILE.yaml (revision 21; active_step P2-C; SIG-005)
Tests run: none (coordination/assessment only)
Risks/assumptions:
  - WORKLOG compaction needed before P2-C to reduce context overhead
  - P2-C gate scope: verify no contradictory source-of-truth rules across PRD-005/006/007/010/011/013
  - PRD-014/015/016 are non-blocking for P2-C but add future protocol surface area
Blocking items:
  - WORKLOG compaction (maintainer approval needed)
  - Maintainer to confirm P2-C gate can proceed
Next owner: Maintainer (approve compaction + confirm P2-C start), both agents (execute P2-C gate)

Codex: Session-start refresh + P2-C reconciliation payload posted (MSG-037)

2026-02-08 — Codex executed the startup sequence from inception/boot-codex.md, refreshed Turnfile session markers, and completed a full P2-C reconciliation pass across PRD-005/006/007/010/011/013.

Execution summary:

  • Startup checks passed: mailbox pre-check (Codex unread: 0) and Turnfile Codex marker refreshed (codex-session-10).
  • Turnfile coordination updates applied at revisions 22-23 (SIG-006 startup marker + SIG-007 task-registration consistency update).
  • Reconciliation result: no new blocking interface deltas; existing PRD-006 delta register D-001..D-006 remains sufficient.
  • Proposed non-blocking harmonization deltas:
    • D-007 [P2]: align PRD-011 snapshot revision-token format with PRD-008 checksum-bearing format.
    • D-008 [P2]: clarify startup-order boundary between PRD-011/013 Turnfile-first resumption read order and PRD-012 mailbox-first turn-boundary checks.
  • Posted MSG-20260208-037 to Claude (apply-or-counter) with gate assessment and delta proposals.
  • Regenerated mailbox projection in same edit cycle after mailbox mutation.
Handoff: P2-C reconciliation payload (Codex) + startup marker refresh
Owner: Codex
Status: Complete (awaiting Claude response)
Changed files:
  - inception/TURNFILE.yaml (revisions 22-23; Codex session marker refresh, `p2c-interface-reconciliation` task registration, `SIG-006`/`SIG-007`)
  - inception/MAILBOX.md (MSG-037 posted; inbox/open-queue updated for Claude unread)
  - inception/MAILBOX.json (regenerated via exporter after mailbox update)
  - inception/WORKLOG.md (status block + this entry)
  - inception/chat-codex.md (maintainer-facing mirror note)
Tests run:
  - node tools/export-mailbox-json.mjs inception/MAILBOX.md inception/MAILBOX.json
Risks/assumptions:
  - D-007 and D-008 are non-blocking harmonization items, not P2-C blockers
  - No additional required deltas observed in this Codex pass; Claude may counter with additional findings
Blocking items:
  - Awaiting Claude apply-or-counter response to MSG-037 before declaring P2-C reconciliation closed
Next owner: Claude (respond to MSG-037), then both agents (close P2-C gate)

Session 11 — 2026-02-08

Claude: P2-C gate — independent reconciliation + MSG-037 response

2026-02-08 — Claude completed independent P2-C reconciliation pass across PRD-005/006/007/010/011/013. Verified 11 interface surfaces for contradictory source-of-truth rules. Found 0 contradictions. Both agents independently confirm gate readiness.

MSG-037 response:

  • D-007 (revision-token consistency): Apply. PRD-011 snapshot token format should include -h<8hex> checksum per PRD-008 R4.
  • D-008 (startup-order boundary clarity): Apply with refinement. Turnfile-first = coordination read order; mailbox-first = active-turn boundary checks. One clarifying sentence in PRD-011 and PRD-013.
  • Additional required deltas: None. D-001–D-008 register is comprehensive.

P2-C gate: PASSED. Both agents confirm no blocking interface deltas. D-007/D-008 are non-blocking harmonization items for P2-D application.

Handoff: P2-C gate reconciliation (Claude side) + MSG-037 response
Owner: Claude
Status: Complete
Changed files:
  - inception/MAILBOX.md (MSG-037 actioned; inbox cleared; Claude reply posted)
  - inception/TURNFILE.yaml (revision 24; Claude session-11 markers; SIG-008 P2-C PASSED)
  - inception/WORKLOG.md (status block + this entry)
Tests run: none (reconciliation/review only)
Risks/assumptions:
  - D-007/D-008 are non-blocking; can be applied at P2-D start
  - P2-C gate closure is a joint assessment; maintainer should confirm
Blocking items: none
Next owner: Maintainer (confirm P2-C closure, direct P2-D scope and assignments)

Codex: Reflection hardening deltas applied + MSG-038 posted

2026-02-08 — Per maintainer reflection request, Codex applied targeted non-blocking process hardening to active draft PRDs and sent Claude a formal apply-or-counter request (MSG-038).

Hardening deltas applied:

  • H-001: PRD-011 snapshot token format aligned to checksum-bearing revision token pattern (-h<8hex>) with PRD-008 R4 reference.
  • H-002: Startup-order boundary clarified across PRD-011/012/013 (Turnfile-first startup orientation vs mailbox-first/last active-turn checks).
  • H-003: Low-activity lock-liveness guardrail added in PRD-010/013 (bounded retries + mandatory escalation, no indefinite spin-wait).
  • H-004: Deterministic mailbox message-ID allocator semantics added in PRD-010 (max+1 + collision retry).

Mailbox action:

  • Posted MSG-20260208-038 to Claude with full delta summary and apply-or-counter request.
Handoff: Reflection hardening deltas (Codex) + MSG-038
Owner: Codex
Status: Complete (awaiting Claude response)
Changed files:
  - inception/docs/PRD-010-shared-file-transaction-locking.md
  - inception/docs/PRD-011-session-resumption-contract.md
  - inception/docs/PRD-012-protocol-skills-codex-claude.md
  - inception/docs/PRD-013-turnfile-coordination-format.md
  - inception/MAILBOX.md (MSG-038 posted; inbox/open-queue updated)
  - inception/MAILBOX.json (regenerated after mailbox update)
  - inception/TURNFILE.yaml (revision 25; Codex task/signal update for hardening pass)
  - inception/WORKLOG.md (status block + this entry)
  - inception/chat-codex.md (maintainer-facing mirror note)
Tests run:
  - node tools/export-mailbox-json.mjs inception/MAILBOX.md inception/MAILBOX.json
Risks/assumptions:
  - H-001..H-004 are non-blocking hardening deltas, compatible with P2-C PASS status
Blocking items:
  - Awaiting Claude apply-or-counter response to MSG-038
Next owner: Claude (respond MSG-038), then maintainer (confirm P2-D kickoff scope)

Claude: MSG-038 actioned + cleanups + friction mitigations proposed (MSG-039)

2026-02-08 — Claude reviewed Codex's H-001..H-004 hardening deltas against actual PRD file content and accepted all four (no counter-recommendations). Then completed maintainer-requested cleanups and posted friction mitigations to Codex for coordination.

MSG-038 response — Apply all:

  • H-001 (snapshot token checksum): Verified in PRD-011 R1.1. Pre-accepted as D-007.
  • H-002 (startup-order boundary): Verified across PRD-011/012/013. Pre-accepted as D-008. All three files internally consistent.
  • H-003 (lock-liveness guardrail): New. Verified in PRD-010 R2.10-11 + R6.7 and PRD-013 R3.3 steps 8-9. Both files use consistent bounded-retry → escalation pattern. Correct mitigation for low-activity revision-clock stall.
  • H-004 (deterministic ID allocation): New. Verified in PRD-010 R4.4-5. max+1 from pre-write read + collision retry closes manual-allocator ambiguity.

Simple cleanups:

  • Boot file updated from session 10 state to session 11 state (P2-C PASSED, mailbox tip for MAILBOX.json, PRD landscape reflecting hardening pass, TURNFILE revision 26).
  • PRD-013 exit criterion #1 validated and marked met: "Two consecutive sessions (10-11) with no coordination regression. Revision 21→26 across both sessions."

Friction mitigations (MSG-039 posted to Codex):

  1. Use Turnfile signals more aggressively for coordination-only exchanges per PRD-013 R9 decision guide.
  2. Propose PRD-012 M1 as P2-D entry point (each agent drafts own skill file structure, reconcile via policy tests).
  3. Staged promotion sequence: Cluster A (013/010/005 infra) → B (011/014/016 lifecycle) → C (006/007/015 governance) → D (012/001/002 execution).
  4. Request Codex confirmation on PRD-013 exit criterion #5 (lower resumption cost with Turnfile in read order).
Handoff: MSG-038 acceptance + cleanups + friction mitigations
Owner: Claude
Status: Complete
Changed files:
  - inception/MAILBOX.md (MSG-038 actioned with apply-all reply; MSG-039 posted; inbox/queue updated)
  - inception/MAILBOX.json (regenerated after mailbox update)
  - inception/TURNFILE.yaml (revision 26; p2c-hardening-deltas marked done; p2c-cleanup task created; SIG-010)
  - inception/WORKLOG.md (status block + this entry)
  - inception/boot-claude.md (updated to session 11 state; MAILBOX.json tip added)
  - inception/docs/PRD-013-turnfile-coordination-format.md (exit criterion #1 marked met)
Tests run:
  - node tools/export-mailbox-json.mjs inception/MAILBOX.md inception/MAILBOX.json
Risks/assumptions:
  - Friction mitigations are proposals, not actions — Codex must ack-or-counter before implementation
  - PRD-013 exit criteria #4 and #5 still need maintainer/agent reports
Blocking items: none
Next owner: Codex (respond to MSG-039), Maintainer (confirm P2-D scope + PRD-013 exit criteria #4/#5)

Codex: Actioned PRD shelf cleanup + MSG-039 response

2026-02-08 — Codex completed the maintainer-requested PRD cleanup: actioned PRDs were copied into canonical PRD shelf and removed from inception/docs/, leaving only in-progress/not-yet-actioned PRDs in inception workspace. Codex also responded to and closed Claude MSG-039.

Cleanup execution:

  • Copied to docs/prds/: PRD-003/004/005/006/007/008/009/010/011/014/015/016.
  • Removed from inception/docs/: same set above.
  • Remaining in inception/docs/: PRD-001, PRD-002, PRD-012, PRD-013.
  • Updated inception/docs/README.md to reflect the new split.

MSG-039 response summary:

  • Mitigation 1 (Turnfile signals for coordination-only traffic): ack.
  • Mitigation 2 (PRD-012 M1 as P2-D entry): ack.
  • Mitigation 3 (future promotion clustering): counter with sequencing update because PRD shelf cleanup already executed.
  • Mitigation 4 (resumption cost with Turnfile): confirmed lower startup cost.
  • MSG-039 status set to closed (closure owner Codex).
Handoff: Actioned PRD cleanup + MSG-039 closeout
Owner: Codex
Status: Complete
Changed files:
  - docs/prds/PRD-005-protocol-data-schema-compatibility.md
  - docs/prds/PRD-006-session-promotion-pipeline.md
  - docs/prds/PRD-007-trust-provenance-layer.md
  - docs/prds/PRD-010-shared-file-transaction-locking.md
  - docs/prds/PRD-011-session-resumption-contract.md
  - docs/prds/PRD-014-session-closeout-boot-handoff-contract.md
  - docs/prds/PRD-015-agent-onboarding-vetting-contract.md
  - docs/prds/PRD-016-session-rotation-trigger-contract.md
  - inception/docs/README.md
  - inception/MAILBOX.md (MSG-039 closed and replied; inbox/open-queue updated)
  - inception/MAILBOX.json (regenerated after mailbox update)
  - inception/TURNFILE.yaml (revision 27; SIG-011; actioned-prd-cleanup task added done)
  - inception/WORKLOG.md (status block + this entry)
  - inception/chat-codex.md (maintainer-facing mirror update)
Tests run:
  - node tools/export-mailbox-json.mjs inception/MAILBOX.md inception/MAILBOX.json
Risks/assumptions:
  - PRD files in `docs/prds/` are promoted shelves, not yet canonical integration into core protocol docs
Blocking items:
  - Maintainer decision needed on P2-D kickoff scope and whether to codify promotion-shelf policy
Next owner: Maintainer (P2-D kickoff direction), then both agents (execution)

Codex: PRD-014/015/016 shelf classification correction

2026-02-08 — Codex corrected an over-broad PRD shelf move. PRD-014/015/016 were treated as actioned during cleanup but are still in-progress/not-yet-actioned, so they were restored to inception/docs/ and removed from docs/prds/.

Correction execution:

  • Restored to inception/docs/: PRD-014, PRD-015, PRD-016.
  • Removed from docs/prds/: same three PRDs.
  • Updated inception/docs/README.md classification lists accordingly.
  • Updated Turnfile state to revision 28 with correction task record and Claude notification signal (SIG-012).
Handoff: PRD shelf correction (014/015/016)
Owner: Codex
Status: Complete
Changed files:
  - inception/docs/PRD-014-session-closeout-boot-handoff-contract.md (restored to inception shelf)
  - inception/docs/PRD-015-agent-onboarding-vetting-contract.md (restored to inception shelf)
  - inception/docs/PRD-016-session-rotation-trigger-contract.md (restored to inception shelf)
  - inception/docs/README.md (classification corrected)
  - inception/TURNFILE.yaml (revision 28; correction task + SIG-012)
Tests run:
  - ls inception/docs
  - ls docs/prds
Risks/assumptions:
  - None. Classification now matches in-progress/actioned split.
Blocking items: none
Next owner: Maintainer (confirm shelf policy), Claude/Codex (continue P2-D on corrected shelf)

Codex: PRD promotion gate guardrails + Claude acceptance request (MSG-040)

2026-02-08 — Codex implemented hard promotion guardrails so PRDs cannot be moved to docs/prds/ without explicit Codex + Claude + Maintainer acceptance evidence.

Guardrails added:

  • Added source-of-truth registry: inception/docs/PRD_STATUS.json (all PRDs with reviewer acceptance/evidence + blockers + eligibility flag).
  • Added validator: tools/validate-prd-promotion.mjs.
  • Updated policy docs:
    • inception/docs/README.md now defines mandatory promotion gate workflow.
    • docs/prds/README.md now defines shelf contract and validator step.
  • Updated PRDs for visibility:
    • docs/prds/PRD-006-session-promotion-pipeline.md now explicitly requires Codex + Claude + Maintainer acceptance and registry gate pass.
    • Added Promotion Gate Snapshot sections in inception/docs/PRD-001/002/012/013/014/015/016.

Validation checks run:

  • node tools/validate-prd-promotion.mjs --registry inception/docs/PRD_STATUS.json (pass).
  • node tools/validate-prd-promotion.mjs --registry inception/docs/PRD_STATUS.json --check-ids PRD-014,PRD-015,PRD-016 (expected fail: maintainer acceptance pending).

Coordination update:

  • Turnfile revision advanced to 29 with task prd-promotion-gate-guardrails marked done and signal SIG-013.
  • Posted MSG-20260208-040 to Claude requesting apply-or-counter acceptance of guardrail changes.
Handoff: PRD promotion gate guardrails + Claude review request
Owner: Codex
Status: Complete (awaiting Claude response)
Changed files:
  - inception/docs/PRD_STATUS.json
  - tools/validate-prd-promotion.mjs
  - inception/docs/README.md
  - docs/prds/README.md
  - docs/prds/PRD-006-session-promotion-pipeline.md
  - inception/docs/PRD-001-maintainer-interaction-model.md
  - inception/docs/PRD-002-rust-notification-viewer-mvp.md
  - inception/docs/PRD-012-protocol-skills-codex-claude.md
  - inception/docs/PRD-013-turnfile-coordination-format.md
  - inception/docs/PRD-014-session-closeout-boot-handoff-contract.md
  - inception/docs/PRD-015-agent-onboarding-vetting-contract.md
  - inception/docs/PRD-016-session-rotation-trigger-contract.md
  - inception/MAILBOX.md (MSG-040 request to Claude)
  - inception/MAILBOX.json (regenerated)
  - inception/TURNFILE.yaml (revision 29; guardrail task + SIG-013)
  - inception/WORKLOG.md (status block + this entry)
  - inception/chat-codex.md (maintainer-facing mirror update)
Tests run:
  - node tools/validate-prd-promotion.mjs --registry inception/docs/PRD_STATUS.json
  - node tools/validate-prd-promotion.mjs --registry inception/docs/PRD_STATUS.json --check-ids PRD-014,PRD-015,PRD-016
Risks/assumptions:
  - Registry evidence accuracy depends on disciplined maintenance after each review cycle.
Blocking items:
  - Claude apply-or-counter response to MSG-040.
Next owner: Claude (accept/counter guardrails), Maintainer (final acceptance policy confirmation)

Claude: MSG-040 actioned (apply guardrails) + P2-D readiness confirmed

2026-02-08 — Claude reviewed Codex's promotion gate guardrails package (MSG-040) and accepted in full. Also confirmed P2-D readiness.

MSG-040 response — Apply:

  • PRD_STATUS.json: Well-structured registry, all 16 PRDs tracked, evidence trails traceable to MSG IDs.
  • validate-prd-promotion.mjs: Clean validator with good coverage (ID format, duplicates, shelf/path, acceptance, evidence, blocking_items, bidirectional disk sync).
  • README updates: Both READMEs state 6-point gate policy clearly.
  • PRD-006 R2a.8: Registry gate requirement correctly placed in promotion owner PRD.
  • Promotion Gate Snapshot sections: Consistent at-a-glance status in all 7 inception PRDs.
  • Non-blocking observation: PRD-005–011 maintainer evidence cites implicit acceptance ("Maintainer-directed cleanup"); weaker than explicit WORKLOG decision entry. Not a blocker.
  • Ran validator independently: clean pass.

P2-D readiness assessment:

  • P2-C fully closed: reconciliation + hardening pass + guardrails all complete.
  • MSG-039 friction mitigations: all 4 acknowledged by Codex. Codex confirms lower resumption cost (PRD-013 exit criterion #5 partially satisfied).
  • Inception working set cleaned: 7 PRDs in inception/docs/ (001/002/012-016), all genuinely in-progress. 9 actioned PRDs in docs/prds/.
  • Promotion guardrails prevent premature promotions going forward.
  • Both agents report ready for P2-D. Awaiting maintainer kickoff.
Handoff: MSG-040 acceptance + P2-D readiness
Owner: Claude
Status: Complete
Changed files:
  - inception/MAILBOX.md (MSG-040 actioned; inbox cleared)
  - inception/MAILBOX.json (regenerated)
  - inception/TURNFILE.yaml (revision 30; p2c-cleanup done; SIG-014 P2-D ready)
  - inception/WORKLOG.md (status block + this entry)
Tests run:
  - node tools/validate-prd-promotion.mjs --registry inception/docs/PRD_STATUS.json (pass)
Risks/assumptions:
  - P2-D scope per MSG-031 consensus: PRD-012 M1-M3 + PRD-013 remaining milestones
  - Codex confirmed PRD-012 M1 as entry point (per MSG-039 ack)
Blocking items: none
Next owner: Maintainer (P2-D kickoff confirmation)

Codex: MSG-040 confirmed/closed + P2-D M1+M2 codex draft completed

2026-02-08 — Codex processed Claude's MSG-040 response as apply, confirmed no counters, and closed the thread. Codex then executed the first P2-D task (p2d-codex-skill-draft) by drafting the Codex-side skill structure and invocation examples per PRD-012 R1/R2/R3.

Mailbox confirmation/closure:

  • MSG-20260208-040 status changed actioned -> closed.
  • Added Codex confirmation ack/reply:
    • apply confirmed
    • non-blocking evidence asymmetry note acknowledged, no immediate gate change required

P2-D artifacts created:

  • inception/skills/turnfile-codex-collaboration/SKILL.md (Codex skill structure + module invocation examples).
  • inception/skills/STRUCTURE.md (per-agent skill layout contract for pilot repository copy).
  • inception/skills/policy-tests/PRD-012-M1-assertion-framework.md (shared assertion ID framework for cross-agent equivalence tests).

Coordination updates:

  • Turnfile revision advanced to 33.
  • p2d-codex-skill-draft marked done (claim_rev: 32, completed_rev: 33).
  • Codex current task reset to null.
  • Signal posted: SIG-017 (codex draft complete, ready for cross-review).
Handoff: MSG-040 close + P2-D codex M1/M2 draft
Owner: Codex
Status: Complete
Changed files:
  - inception/MAILBOX.md (MSG-040 closed with Codex confirm)
  - inception/MAILBOX.json (regenerated)
  - inception/TURNFILE.yaml (revision 33; p2d-codex-skill-draft done; SIG-017)
  - inception/skills/STRUCTURE.md
  - inception/skills/turnfile-codex-collaboration/SKILL.md
  - inception/skills/policy-tests/PRD-012-M1-assertion-framework.md
  - inception/WORKLOG.md (status block + this entry)
  - inception/chat-codex.md (maintainer-facing mirror update)
Tests run:
  - node tools/export-mailbox-json.mjs inception/MAILBOX.md inception/MAILBOX.json
Risks/assumptions:
  - `init_skill.py` from skill-creator could not be used in this environment (`ModuleNotFoundError: yaml`), so skill scaffolding was created manually.
Blocking items:
  - Need Claude cross-review of Codex skill draft for M1/M2 convergence before M3 shared policy test execution.
Next owner: Claude (cross-review codex draft + deliver claude draft), then Codex/Claude jointly (M3 policy tests)

Claude: p2d-claude-skill-draft complete + p2d-prd013-schema claimed

2026-02-08 — Claude completed the Claude skill file draft and moved to the next parallel task (Turnfile JSON Schema).

Skill file delivered:

  • inception/skills/skill-claude.md: 8 modules covering all PRD-012 R2 required workflows:
    • Module 1: Session Start (PRD-011 R3 + PRD-013 R5.1)
    • Module 2: Mailbox Lifecycle (PRD-003 R1 + PRD-012 R2.2)
    • Module 3: Maintainer Decision Request (PRD-004)
    • Module 4: Cross-Agent Review (PRD-008 + PRD-009)
    • Module 5: Shared-File Transaction (PRD-010 + PRD-013 R3.3)
    • Module 6: Session Close (PRD-011 R1 + PRD-013 R5.2 + PRD-014)
    • Module 7: Turnfile Coordination (PRD-013 R3 + R6)
    • Module 8: OQ Registry Management (PRD-009)
  • Each module: trigger phrases, inputs, procedure, outputs, escalation conditions.
  • Environment-specific notes: context window management, tool-use patterns, fallback behavior, audit visibility.

Codex artifacts reviewed (quick assessment for structure alignment):

  • inception/skills/STRUCTURE.md: Per-agent skill layout with shared policy assertion location. Consistent with PRD-012 R1.
  • inception/skills/policy-tests/PRD-012-M1-assertion-framework.md: 19 assertion IDs across 9 categories. Good coverage of PRD-012 R2 required modules. M3 will add executable harnesses.
  • Note: Codex placed skill file at turnfile-codex-collaboration/SKILL.md; STRUCTURE.md references Claude file at turnfile-claude-collaboration/SKILL.md. Claude's actual file is at skill-claude.md — minor naming discrepancy, non-blocking, can reconcile during cross-review.

Next task claimed: p2d-prd013-schema (PRD-013 M1)

  • No dependencies — parallel path alongside policy tests.
  • Schema target: inception/schemas/turnfile/turnfile-v0.schema.json per PRD-013 R1.2 + PRD-005 R8.4.
Handoff: Claude skill draft complete + schema task claimed
Owner: Claude
Status: Complete (skill draft) / In progress (schema)
Changed files:
  - inception/TURNFILE.yaml (revision 34; p2d-claude-skill-draft done; p2d-prd013-schema claimed; SIG-018)
  - inception/WORKLOG.md (status block + this entry)
Tests run: none (coordination only)
Risks/assumptions:
  - Skill file naming discrepancy (skill-claude.md vs STRUCTURE.md's turnfile-claude-collaboration/SKILL.md) is non-blocking
  - Schema draft will be validated against current TURNFILE.yaml live instance
Blocking items: none
Next owner: Claude (schema draft), then Claude or Codex (linter after schema)

Claude: PRD-013 M1 schema + M2 linter complete + policy tests claimed

2026-02-08 — Claude delivered both PRD-013 M1 (Turnfile JSON Schema) and M2 (linter tool) in a single work block, then claimed the shared policy test task.

PRD-013 M1 — Turnfile JSON Schema:

  • Published at inception/schemas/turnfile/turnfile-v0.schema.json (per PRD-013 R1.2 + PRD-005 R8.4).
  • JSON Schema 2020-12 draft with $defs for reusable types.
  • Covers all 7 top-level sections: turnfile, agents, maintainer, coordination, locks, turn_queue, messages.
  • 6 definition types: agent_entry, task_entry, lock_entry, turn_claim, signal_entry.
  • All enum constraints from PRD-013 R2 encoded (agent status, task status, signal types, priority tiers, maintainer status, roles).
  • String patterns for signal IDs (SIG-NNN) and version format.
  • Validated against live TURNFILE.yaml (rev 34) using ajv — clean pass.

PRD-013 M2 — Turnfile linter:

  • Published at tools/turnfile-lint.mjs (ESM style matching existing tooling conventions).
  • 3-phase validation:
    1. YAML strictness (R1.1): tab detection, anchor/alias prohibition, multi-document check, nesting depth warning.
    2. JSON Schema conformance (R1.2): Full ajv 2020-12 validation with graceful fallback to structural check if ajv unavailable.
    3. Semantic invariants: agent→task reference integrity, task dependency satisfaction, claim_rev/completed_rev consistency, lock staleness detection, signal ID monotonicity, signal rev bounds.
  • CLI flags: --turnfile <path>, --schema <path>, --fix-hints.
  • Exit codes: 0 (pass), 1 (validation errors), 2 (fatal errors).
  • Both validated against live TURNFILE.yaml (rev 35) — lint passes clean.

npm dependency note: Installed js-yaml and ajv as dev dependencies for schema validation tooling. These are standard, well-maintained packages.

Handoff: PRD-013 M1+M2 complete + policy tests claimed
Owner: Claude
Status: Complete (schema+linter) / In progress (policy tests)
Changed files:
  - inception/schemas/turnfile/turnfile-v0.schema.json (NEW — PRD-013 M1)
  - tools/turnfile-lint.mjs (NEW — PRD-013 M2)
  - inception/TURNFILE.yaml (revision 35; schema+linter done; policy-tests claimed; SIG-019)
  - inception/WORKLOG.md (status block + this entry)
  - package.json (NEW — dev dependencies for js-yaml, ajv)
Tests run:
  - node tools/turnfile-lint.mjs (PASS on live TURNFILE.yaml)
  - ajv schema validation of TURNFILE.yaml against turnfile-v0.schema.json (PASS)
Risks/assumptions:
  - npm dependencies (js-yaml, ajv) are dev-only; no runtime deployment impact
  - Schema covers pilot format only; version bumps will require schema updates
Blocking items: none
Next owner: Claude (draft shared policy test suite), then validation scenarios (PRD-012 M4)

Claude: M3 policy test suite + MSG-041 cross-review (apply)

2026-02-08 — Claude drafted the shared policy test suite (PRD-012 M3) and completed cross-review of Codex's P2-D skill artifacts (MSG-041).

PRD-012 M3 — Policy test suite:

  • Published at inception/skills/policy-tests/PRD-012-M3-policy-test-suite.md.
  • 4 scenario harnesses matching PRD-012 R6 validation scenario classes:
    1. Cross-agent PRD review round-trip (7 assertions)
    2. Shared-file update cycle with lock + invariant (6 assertions)
    3. Session close + next-session resumption (7 assertions)
    4. Turnfile coordination cycle (6 assertions)
  • 19 M1 assertion IDs mapped to concrete pass/fail fixtures with expected evidence and failure signals.
  • Cross-agent equivalence matrix mapping Claude modules to Codex modules.
  • Evidence template for per-scenario test execution documentation.
  • Automated checks reference turnfile-lint.mjs for assertion coverage.

MSG-041 response — Apply:

  • Reviewed all 3 Codex P2-D artifacts against PRD-012 R1/R2/R3 requirements.
  • 1 recommended (P2): OQ Registry as separate module for invocation ergonomics.
  • 2 informational notes: PRD-014 reference in session close, STRUCTURE.md naming correction.
  • Cross-agent equivalence confirmed for all 7 PRD-012 R2 required modules.

P2-D deliverable status (Claude side):

Deliverable Task Status
Claude skill file (M1+M2) p2d-claude-skill-draft Done (rev 34)
Turnfile JSON Schema (PRD-013 M1) p2d-prd013-schema Done (rev 35)
Turnfile linter (PRD-013 M2) p2d-prd013-linter Done (rev 35)
Policy test suite (M3) p2d-policy-tests Done (rev 36)
Codex cross-review MSG-041 Actioned (apply)
Validation scenarios (M4) p2d-validation-scenarios Pending (requires both agents) 
Handoff: M3 policy test suite + MSG-041 cross-review
Owner: Claude
Status: Complete
Changed files:
  - inception/skills/policy-tests/PRD-012-M3-policy-test-suite.md (NEW — M3 policy test suite)
  - inception/MAILBOX.md (MSG-041 actioned with apply; inbox cleared; Claude unread → 0)
  - inception/MAILBOX.json (regenerated)
  - inception/TURNFILE.yaml (revision 36; schema/linter/policy-tests done; SIG-019/020)
  - inception/WORKLOG.md (status block + this entry)
Tests run:
  - node tools/turnfile-lint.mjs (PASS — rev 36, 27 tasks, 20 signals)
  - node tools/export-mailbox-json.mjs inception/MAILBOX.md inception/MAILBOX.json (success)
Risks/assumptions:
  - M4 validation scenarios require both agents to execute scenario classes — not unilateral
  - Policy test suite is a framework; M4 provides the evidence of execution
  - OQ registry module recommendation (P2) is non-blocking for cross-agent equivalence
Blocking items: none
Next owner: Maintainer (confirm M4 execution plan or direct session close)

Codex: M4 claimed + Scenario 1 executed (default target PRD-001) + coordinated split instructions posted

2026-02-08 — Maintainer authorized immediate M4 execution with defaults. Codex claimed p2d-validation-scenarios, executed Scenario 1 (cross-agent PRD review round-trip) against PRD-001, and posted coordinated lane instructions to Claude for parallel, non-overlapping M4 execution.

Turnfile claim/update:

  • Claimed p2d-validation-scenarios (owner: codex, status: in_progress, claim_rev: 37).
  • Updated Codex current task to p2d-validation-scenarios.
  • Posted SIG-021 with M4-start coordination notice.
  • Turnfile lint/schema validation passed after update.

Scenario 1 execution (Codex lane):

  • Posted MSG-20260208-042 to Claude:
    • Scenario 1 review payload for inception/docs/PRD-001-maintainer-interaction-model.md
    • Findings classified (2 recommended, 1 informational)
    • Ask: apply-or-counter on findings + ack-or-counter on coordinated lane split
  • Proposed lane split:
    • Codex: Scenario 1 + Scenario 4
    • Claude: Scenario 2 + Scenario 3

Evidence artifacts:

  • Added inception/skills/policy-tests/M4-EVIDENCE-S1-codex.md with assertion-level verdicts and pending items for round-trip completion.
Handoff: M4 claim + Scenario 1 execution + Claude coordination
Owner: Codex
Status: In progress (awaiting Claude response to MSG-042)
Changed files:
  - inception/TURNFILE.yaml (revision 37; p2d-validation-scenarios claimed; SIG-021)
  - inception/MAILBOX.md (MSG-042 posted; inbox/open queue updated)
  - inception/MAILBOX.json (regenerated)
  - inception/skills/policy-tests/M4-EVIDENCE-S1-codex.md
  - inception/WORKLOG.md (status block + this entry)
  - inception/chat-codex.md (maintainer-facing mirror update)
Tests run:
  - node tools/turnfile-lint.mjs --turnfile inception/TURNFILE.yaml --schema inception/schemas/turnfile/turnfile-v0.schema.json (PASS)
  - node tools/export-mailbox-json.mjs inception/MAILBOX.md inception/MAILBOX.json (success)
Risks/assumptions:
  - Scenario 1 remains partially complete until Claude replies (lifecycle ack/action and cross-agent equivalence close).
Blocking items:
  - Awaiting Claude response to MSG-042.
Next owner: Claude (respond MSG-042 + execute assigned M4 lanes), then Codex (execute Scenario 4 and finalize M4 equivalence summary)

Claude: M4 validation — Claude lane complete (all 4 scenarios PASS)

2026-02-08 — Claude executed M4 validation scenarios for the Claude side and responded to MSG-042.

Scenario execution summary:

Scenario Verdict Key evidence
S4: Turnfile coordination PASS 4 tasks self-assigned (revs 31-36). claim_rev/completed_rev/signals all correct. Linter PASS.
S1: PRD review round-trip PASS MSG-041 receiver path: revision token verified, lifecycle unread→actioned, findings classified, MAILBOX.json regenerated.
S3: Session close/resume PASS Session 10→11 boundary: Turnfile-first read order, mailbox boundary discipline (first+last), snapshot with carry-over anchors.
S2: Shared-file lock cycle PASS Live exercise: lock acquired (rev 38), WORKLOG edited under lock, lock released (rev 39), linter PASS.

MSG-042 response:

  • PRD-001 findings 1+2: Apply. Finding 3: Noted.
  • Lane split: Ack. Claude S2+S3, Codex S1+S4.
  • MSG-042 itself provides additional S1 evidence (Codex→Claude review with revision token, Claude apply response).

Evidence artifacts:

  • inception/skills/policy-tests/M4-evidence-claude.md — full evidence pack with 17 assertion verdicts.

Lock audit trail:

  • Lock m4-scenario2-worklog: acquired rev 38, held for 1 revision, released rev 39.
  • Target: inception/WORKLOG.md (status block annotation).
  • Pre-write re-read confirmed. Post-release linter confirmed.
Handoff: M4 Claude lane complete
Owner: Claude
Status: Complete (Claude lane) / Awaiting Codex lane for joint summary
Changed files:
  - inception/skills/policy-tests/M4-evidence-claude.md (NEW — full Claude evidence pack)
  - inception/TURNFILE.yaml (revisions 38-40; lock acquire/release cycle; SIG-022)
  - inception/MAILBOX.md (MSG-042 actioned; inbox cleared; Claude unread → 0)
  - inception/MAILBOX.json (regenerated)
  - inception/WORKLOG.md (status block + this entry)
Tests run:
  - node tools/turnfile-lint.mjs (PASS — rev 40, 27 tasks, 22 signals, 0 locks)
  - node tools/export-mailbox-json.mjs (success)
Risks/assumptions:
  - Codex lane evidence needed for joint equivalence summary
  - p2d-validation-scenarios task owned by Codex — Codex will mark done after joint summary
Blocking items: none (Claude lane unblocked)
Next owner: Codex (complete Codex lane evidence + joint equivalence summary)

Codex: M4 codex lane complete + joint equivalence summary published

2026-02-08 — Codex finalized M4 by closing the Codex lane and publishing joint equivalence artifacts.

Codex completions:

  • Updated Scenario 1 evidence (M4-EVIDENCE-S1-codex.md) from partial to complete after Claude actioned MSG-042.
  • Added Scenario 4 evidence (M4-EVIDENCE-S4-codex.md) using Turnfile task lifecycle traces.
  • Added joint summary (M4-EQUIVALENCE-SUMMARY.md) consolidating scenario verdicts under the agreed lane split.
  • Closed Turnfile task p2d-validation-scenarios (status: done, completed_rev: 41).
  • Posted SIG-023 to announce M4 completion and evidence locations.
Handoff: M4 closure + equivalence summary
Owner: Codex
Status: Complete
Changed files:
  - inception/TURNFILE.yaml (revision 41; p2d-validation-scenarios done; SIG-023; codex current_task reset)
  - inception/skills/policy-tests/M4-EVIDENCE-S1-codex.md (updated to complete)
  - inception/skills/policy-tests/M4-EVIDENCE-S4-codex.md (NEW)
  - inception/skills/policy-tests/M4-EQUIVALENCE-SUMMARY.md (NEW)
  - inception/WORKLOG.md (status block + this entry)
Tests run:
  - node tools/turnfile-lint.mjs --turnfile inception/TURNFILE.yaml --schema inception/schemas/turnfile/turnfile-v0.schema.json
Risks/assumptions:
  - Scenario 2 and Scenario 3 evidence are lane-assigned to Claude and referenced from Claude evidence artifact.
Blocking items: none
Next owner: Maintainer (accept M4 closure and direct next phase)

Codex: Deferred-task split kicked off + AC6 completed (helper script live exchange)

2026-02-08 — Maintainer approved closing the two remaining deferred tasks in parallel. Codex claimed and completed deferred-prd008-ac6, and posted a coordination request to Claude to claim deferred-prd003-ac4.

Coordination actions:

  • Turnfile updated to claim deferred-prd008-ac6 at rev 42 (owner: codex, status: in_progress, claim_rev: 42).
  • Posted MSG-20260208-043 (Codex -> Claude, request, ack-or-counter) requesting Claude claim AC4 stale-message drill.
  • Message payload in MSG-043 was generated using tools/new-payload-envelope.mjs (topic deferred-prd008-ac6-kickoff).

AC6 completion actions (Codex):

  • Added evidence artifact: inception/skills/policy-tests/PRD-008-AC6-EVIDENCE-codex.md.
  • Turnfile task closed at rev 43:
    • deferred-prd008-ac6 -> status: done, completed_rev: 43
    • Codex current_task reset to null
  • Signals posted:
    • SIG-024 (claim + Claude coordination request)
    • SIG-025 (AC6 completion)
Handoff: Deferred split kickoff + AC6 completion
Owner: Codex
Status: Partial complete (AC6 done; AC4 pending Claude lane)
Changed files:
  - inception/TURNFILE.yaml (revs 42-43; deferred-prd008-ac6 claimed+closed; SIG-024/025)
  - inception/MAILBOX.md (MSG-043 posted to Claude with script-generated payload)
  - inception/MAILBOX.json (regenerated)
  - inception/skills/policy-tests/PRD-008-AC6-EVIDENCE-codex.md (NEW)
  - inception/WORKLOG.md (status block + this entry)
Tests run:
  - node tools/export-mailbox-json.mjs inception/MAILBOX.md inception/MAILBOX.json (success)
  - node tools/turnfile-lint.mjs --turnfile inception/TURNFILE.yaml --schema inception/schemas/turnfile/turnfile-v0.schema.json (PASS)
Risks/assumptions:
  - AC4 remains pending until Claude claims and executes stale-message scenario evidence.
Blocking items:
  - Awaiting Claude response to MSG-20260208-043.
Next owner: Claude (ack/counter + claim deferred-prd003-ac4), then Codex (close loop once Claude evidence lands)

ESCALATION: MSG-044 stale — PRD-003 R4 (AC#4 drill)

Escalated: MSG-20260208-044 — [AC#4 DRILL] Synthetic stale P1 request — Codex did not ack within P1 window (next session). Escalated per PRD-003 R4 step 2. Maintainer notified via MSG-20260208-045 (P0).

Claude: MSG-043 acked + deferred-prd003-ac4 claimed + AC#4 stale-message drill executed

2026-02-08 — Claude acked Codex's deferred task split (MSG-043), claimed deferred-prd003-ac4, and executed the complete PRD-003 AC#4 stale-message drill.

MSG-043 response — Ack:

  • Split accepted as proposed. Claude takes AC#4, Codex takes AC#6.
  • Codex's proposed minimal acceptance evidence criteria accepted.

AC#4 drill execution — all 4 steps exercised:

  1. Synthetic stale P1 request (MSG-044): Posted a P1 request from Claude→Codex that simulates a message past its SLA window. The request was intentionally left unread past the P1 window ("next session") to trigger stale detection. This satisfies the "one intentionally stale P1 request scenario" criterion.

  2. Stale detection (PRD-003 R4 step 1): Sender (Claude) checks inbox snapshot at session start. MSG-044 is past its P1 SLA window and still unread → stale. Detection recorded in MSG-044 Ack line.

  3. WORKLOG escalation (PRD-003 R4 step 2): One-line escalation entry posted above this entry: Escalated: MSG-20260208-044 — [...] — Codex did not ack within P1 window. This satisfies the "WORKLOG escalation entry per PRD-003 R4" criterion.

  4. Maintainer notification (PRD-003 R4 step 3): Since MSG-044 is P1, maintainer must be notified. Posted MSG-045 (P0, Claude→Maintainer) with stale message details and recommended disposition. This satisfies the "Maintainer notification path recorded in MAILBOX" criterion.

  5. Terminal disposition (PRD-003 R4 step 4): Awaiting maintainer. Recommended: close MSG-044 as superseded (drill complete). This satisfies the "final terminal disposition recorded" criterion once maintainer acts.

PRD-003 AC#4 evidence summary:

Criterion Evidence Status
State machine unambiguous (AC#1) R1 table fully specified in PRD-003 Met (prior)
SLA testable at session start (AC#2) MSG-044 detected stale at session start Met
Stale protocol produces WORKLOG entry (AC#3) Escalation entry above Met
Real stale scenario exercised (AC#4) MSG-044 + MSG-045 + this WORKLOG entry Met
Lifecycle fits single reference card (AC#5) R1 table + diagram in PRD-003 Met (prior) 
Handoff: MSG-043 ack + AC#4 stale-message drill
Owner: Claude
Status: In progress (awaiting maintainer disposition on MSG-044/045)
Changed files:
  - inception/TURNFILE.yaml (revision 44; deferred-prd003-ac4 claimed; SIG-026)
  - inception/MAILBOX.md (MSG-043 actioned; MSG-044 posted as stale drill; MSG-045 posted as P0 escalation)
  - inception/MAILBOX.json (regenerated)
  - inception/WORKLOG.md (status block + escalation entry + this entry)
Tests run:
  - node tools/turnfile-lint.mjs (pending)
  - node tools/export-mailbox-json.mjs (pending)
Risks/assumptions:
  - AC#4 is a controlled drill; MSG-044 is synthetic, not a real operational failure
  - Terminal disposition requires maintainer action (close as superseded)
Blocking items:
  - Maintainer disposition on MSG-044/045
Next owner: Maintainer (close MSG-044 as superseded + close MSG-045 as resolved)

Codex: Review follow-up to Claude (recent work + skill alignment) posted as MSG-046

2026-02-08 — Per maintainer request, Codex reviewed Claude's recent work and posted targeted change requests to Claude without directly editing Claude-owned skill artifacts.

Scope reviewed:

  • inception/skills/skill-claude.md (module structure + state alignment)
  • inception/MAILBOX.md (AC4 drill lifecycle state)
  • Promotion-gate references (docs/prds/README.md, inception/docs/README.md, PRD-003/006/008)

MSG-046 sent to Claude (apply-or-counter):

  1. Required: fix mailbox snapshot inconsistency (MSG-044 unread to Codex while Codex unread count reports 0).
  2. Required: refresh stale versioning metadata in skill-claude.md (M3/M4 now complete).
  3. Recommended: make Module 6 promotion + push behavior explicitly conditional on maintainer direction + promotion gate pass.
  4. Recommended: align stale-message citation in Module 2 to PRD-003 R4.
  5. Informational: Codex may adopt Claude's explicit OQ-only module pattern for parity.
Handoff: Claude review request (MSG-046)
Owner: Codex
Status: Complete (request posted; awaiting Claude response)
Changed files:
  - inception/MAILBOX.md (MSG-046 posted; inbox/open queue updated)
  - inception/MAILBOX.json (regenerated)
  - inception/TURNFILE.yaml (revision 45; SIG-027)
  - inception/WORKLOG.md (status block + this entry)
Tests run:
  - node tools/export-mailbox-json.mjs inception/MAILBOX.md inception/MAILBOX.json (success)
  - node tools/turnfile-lint.mjs --turnfile inception/TURNFILE.yaml --schema inception/schemas/turnfile/turnfile-v0.schema.json (PASS)
Risks/assumptions:
  - AC4 drill remains in-progress until maintainer disposition closes MSG-044/045.
Blocking items:
  - Awaiting Claude response to MSG-046.
  - Awaiting maintainer disposition on MSG-045/044.
Next owner: Claude (apply-or-counter on MSG-046), Maintainer (stale-drill disposition)

Codex: Outstanding message queue resolved (MSG-046 closed)

2026-02-08 — Claude responded to MSG-046 with apply on requested changes. Codex reviewed response and closed the thread, clearing the open queue.

Actions taken:

  • Updated MSG-20260208-046 status from actioned to closed in MAILBOX.md.
  • Added Codex close acknowledgment on the message card.
  • Open queue set to empty state.
  • Turnfile revision advanced to 47 with SIG-029 noting queue resolution.
Handoff: Outstanding-message closeout
Owner: Codex
Status: Complete
Changed files:
  - inception/MAILBOX.md (MSG-046 closed; open queue empty)
  - inception/MAILBOX.json (regenerated)
  - inception/TURNFILE.yaml (revision 47; SIG-029)
  - inception/WORKLOG.md (status block + this entry)
Tests run:
  - node tools/export-mailbox-json.mjs inception/MAILBOX.md inception/MAILBOX.json (success)
  - node tools/turnfile-lint.mjs --turnfile inception/TURNFILE.yaml --schema inception/schemas/turnfile/turnfile-v0.schema.json (PASS)
Risks/assumptions:
  - No additional Codex-directed open mailbox requests remain.
Blocking items: none
Next owner: Maintainer (session close or next assignment)

Codex: Reflection follow-through implemented (skill hardening + mailbox tooling)

2026-02-08 — Implemented the post-reflection improvements immediately:

  1. Codex skill-file hardening in inception/skills/turnfile-codex-collaboration/SKILL.md:

    • Added turn-close hygiene requirements to prevent actioned-thread leakage.
    • Added explicit state-freshness hooks after milestone/task completion.
    • Split OQ operations into a dedicated OQ-only lane (Module M-08).
    • Added mailbox invariant validation expectation in shared-file transaction module.

  2. Mailbox JSON exporter cleanup in tools/export-mailbox-json.mjs:

    • Constrained section-table parsing to section bounds.
    • Fixed empty-open-queue export behavior (now emits [], no placeholder empty rows).

  3. New mailbox invariant validator tool:

    • tools/validate-mailbox-invariants.mjs
    • Checks inbox unread counts/oldest IDs against active messages, queue-reference integrity, and terminal-status leakage into open queue.
Handoff: Reflection implementation complete
Owner: Codex
Status: Complete
Changed files:
  - inception/skills/turnfile-codex-collaboration/SKILL.md
  - tools/export-mailbox-json.mjs
  - tools/validate-mailbox-invariants.mjs (NEW)
  - inception/MAILBOX.json (regenerated, open_queue now [])
  - inception/TURNFILE.yaml (revision 48; SIG-030)
  - inception/WORKLOG.md (status block + this entry)
Tests run:
  - node tools/validate-mailbox-invariants.mjs --mailbox inception/MAILBOX.md (PASS)
  - node tools/export-mailbox-json.mjs inception/MAILBOX.md inception/MAILBOX.json (success)
  - node tools/turnfile-lint.mjs --turnfile inception/TURNFILE.yaml --schema inception/schemas/turnfile/turnfile-v0.schema.json (PASS)
Risks/assumptions:
  - No protocol semantic changes introduced; this is operational hardening only.
Blocking items: none
Next owner: Maintainer (accept hardening set and direct next work)

Codex: Boot file archived/refreshed + pre-cleanup guardrails lodged (MSG-047)

2026-02-08 — Completed startup-safety prep for the next thread and lodged pre-cleanup constraints before any inception->examples migration work.

Boot safety actions:

  • Archived previous active boot file:
    • inception/archive/boot-codex/boot-codex_v3.md
  • Replaced active startup brief:
    • inception/boot-codex.md
    • New brief now includes:
      • required skill adoption gate for inception/skills/turnfile-codex-collaboration/SKILL.md
      • module selection map (M-01..M-08)
      • Phase II carry-over anchors
      • cleanup pre-flight guardrails + validation commands

Pre-cleanup coordination actions:

  • Posted MSG-20260208-047 (Codex -> Claude, request, ack-or-counter) with explicit guardrails:
    1. scope freeze before moves
    2. promotion-gate separation (cleanup != docs/prds promotion)
    3. examples manifest requirement
    4. transaction-safety + validation checks
    5. rollback list until maintainer finalization
  • Turnfile advanced to rev 49 with SIG-031.
Handoff: Boot refresh + cleanup guardrails request
Owner: Codex
Status: Complete (request posted; awaiting Claude response)
Changed files:
  - inception/archive/boot-codex/boot-codex_v3.md (NEW archive snapshot)
  - inception/boot-codex.md (rewritten startup safety brief)
  - inception/MAILBOX.md (MSG-047 posted; inbox/open queue updated)
  - inception/MAILBOX.json (regenerated)
  - inception/TURNFILE.yaml (revision 49; SIG-031)
  - inception/WORKLOG.md (status block + this entry)
Tests run:
  - node tools/export-mailbox-json.mjs inception/MAILBOX.md inception/MAILBOX.json (success)
  - node tools/validate-mailbox-invariants.mjs --mailbox inception/MAILBOX.md (PASS)
  - node tools/turnfile-lint.mjs --turnfile inception/TURNFILE.yaml --schema inception/schemas/turnfile/turnfile-v0.schema.json (PASS)
Risks/assumptions:
  - Cleanup should wait for or incorporate MSG-047 guardrail ack/counter.
Blocking items:
  - Awaiting Claude response to MSG-047.
Next owner: Claude (ack-or-counter + cleanup execution plan), Maintainer (final cleanup direction)

Claude: MSG-046 actioned + MSG-047 acked + skill file v0.2.0 hardened + session 11 closed

2026-02-08 — Claude processed MSG-046 (5 Codex review findings) and MSG-047 (pre-cleanup guardrails), hardened skill-claude.md to v0.2.0 with naming corrections, state freshness hooks, and boundary discipline improvements, then closed session 11.

MSG-046 response — Apply (3 of 5):

  • Finding 1 (inbox snapshot inconsistency): Reconciled during state convergence.
  • Finding 2 (version metadata stale): Already resolved by v0.2.0 update.
  • Finding 3 (Module 6 promotion unconditional): Applied — steps 8-9 now conditional on maintainer direction + gate pass.
  • Finding 4 (stale citation R3→R4): Applied — expanded PRD-003 R4 reference with 4-step description.
  • Finding 5 (OQ module structural variant): Acknowledged — informational only.

MSG-047 response — Ack all 5 guardrails + 3 additions:

  • Guardrails 1-5 (scope freeze, promotion-gate separation, manifest, transaction safety, rollback): All acked.
  • Addition 1: Skills and schemas have permanent project homes (not just examples).
  • Addition 2: Session close before cleanup (confirmed by maintainer).
  • Addition 3: Onboarding intent — manifest should include reading order guidance.

Skill file v0.2.0 hardening:

  • Naming: snap-protocol-claude → turnfile-protocol-claude, title → "Turnfile Protocol Skill File — Claude".
  • State Freshness Hooks section (5 items) added as cross-cutting discipline.
  • Active-Turn Boundary Discipline expanded to 6 items (close-or-clear, verify open queue).
  • Module 2 consistency self-check (step 5) added.
  • H-002 boundary clarification note added.

Session 11 close (Module 6):

  • TURNFILE.yaml: revision 50, Claude status idle, SIG-032 yield.
  • All mailbox queues empty. Claude unread = 0.
  • Boot file archived (v3 → v4), new boot file written.
  • Session state snapshot written to chat-claude.md.
Handoff: Session 11 close
Owner: Claude
Status: Complete
Changed files:
  - inception/skills/skill-claude.md (v0.2.0: naming, freshness hooks, boundary discipline, conditional promotion, stale citation fix, consistency self-check)
  - inception/MAILBOX.md (MSG-046 actioned/closed, MSG-047 actioned/closed, MSG-044/045 to closed summary, inbox reconciled)
  - inception/MAILBOX.json (regenerated)
  - inception/TURNFILE.yaml (revision 50; Claude idle; SIG-028/032; deferred-prd003-ac4 done)
  - inception/WORKLOG.md (status block + this entry)
  - inception/chat-claude.md (session 11 state snapshot)
  - inception/boot-claude.md (v4 rewrite — next work: inception→examples migration)
  - inception/archive/boot-claude/boot-claude_v3.md (archived)
Tests run:
  - node tools/turnfile-lint.mjs --turnfile inception/TURNFILE.yaml --schema inception/schemas/turnfile/turnfile-v0.schema.json (PASS)
  - node tools/validate-mailbox-invariants.mjs --mailbox inception/MAILBOX.md (PASS)
  - node tools/export-mailbox-json.mjs inception/MAILBOX.md inception/MAILBOX.json (success)
Risks/assumptions:
  - Inception→examples migration is next session's task (Claude-owned, per maintainer direction)
  - Migration must follow MSG-047 guardrails (scope freeze, promotion-gate separation, manifest, transaction safety, rollback)
Blocking items: none
Next owner: Claude (inception→examples migration in next session), Maintainer (confirm session 12 scope)