[dills122]

Summary

Record the merge of #386 and advance the next bounded C5b19 Gate-3 increment: pure one-attempt write-history and settlement conformance in existing archive PR #38.

The checker retains one exact pending request, enforces fresh operation IDs and exact generation progression, and applies only a matching simulated control reply. Failed or indeterminate outcomes preserve the confirmed projection. Terminal candidates preserve confirmed runner facts and match any attempted runner identity, while the valid preparation-to-terminal path remains available.

This is an offline consistency checker, not a control model or proof of durable publication, custody, timing, start, completion or release. Full Gate 3 remains in progress. Child execution and later admission gates remain closed.

Verification

• Canonical frozen install, make ci and standalone pnpm test passed (177 workspace and 132 script tests plus full Go checks).
• Existing quality: enforce exported contract documentation #217 unfiltered revive debt remains: 50 findings under the output cap, not a total backlog count.
• Exact offline archive Go 1.25.13 test/race/vet/build passed after compiler-red; six targeted guard mutants failed and original bytes were restored.
• Source, immutable reference, historical G3a2 and retained log hashes were checked. No dependencies, source-manifest expansion or lifecycle effects were introduced.

Delivery and review

• Archive PR #38, exact head 6575898a32ff4a3d24ca4c757f42b1807798a372, remains draft for unfinished full Gate 3. There are no hosted archive checks.
• Fresh G3a3 independent review instance 1/3 returned Ready, with no actionable findings. Source stayed unchanged after review; only acceptance metadata was appended before commit. The report and preliminary ledger are retained under .planning/c5b19-settlement.
• PR docs: close CI parity and advance C5b19 recovery #386 merged normally at 080e9203c6c96d1494ea3a52e8855816fec3fa38; post-merge main CI38818521284 passed. No branch-protection changes or bypass were used.
• This canonical PR is intentionally ready for review. No further merge or child execution is part of this delivery.

Hosted acceptance

• Exact canonical head 4ff7edda52c60ad162ffec3b410a3db0e57d2312: CI38820204405 and CodeQL38820204303 passed. All applicable PR jobs succeeded; the nightly-only full-suite job was skipped by event policy. This is not a new nightly result.
• GitHub reported CLEAN; the head has no canceled or duplicate workflow runs. Both delivery worktrees are clean and match their pushed branch heads.
• Bounded G3a3: PASSED. Full Gate 3: IN_PROGRESS — TRENDING_GOOD. Gates 4–6, child execution, and product admission: BLOCKED pending their separate evidence and authorization.