[dills122]

Summary

Close the recovery roadmap's CI parity item after #385 merged and #265 closed, then advance the next P1 item through a bounded C5b19 wire/record conformance increment in the existing experiment archive PR #38.

The archive increment validates exact 397-byte requests, 98-byte replies and 395-byte records using inert in-memory fixtures. It preserves the frozen source manifest and Go 1.25.13 offline toolchain. The canonical report records the exact archive source, tests, review history and remaining gates.

Full Gate 3 remains in progress. Native control, durable storage, the full trace oracle, child execution and product admission remain outside this slice. The historical initial-primitive review-3 claim has no recovered report and is not recertified by the new increment's review.

Verification

• Canonical pnpm install --frozen-lockfile, make ci, and standalone pnpm test passed: full Go suite and 177 workspace / 132 script tests, static checks, dependency audit, schema/ADR/site gates.
• Unfiltered golangci-lint run ./... still reports pre-existing quality: enforce exported contract documentation #217 revive debt (50 findings under the output cap, not the total backlog).
• Archive compiler-red followed by offline Go 1.25.13 test/race/vet/build passing; three controlled mutants rejected and original source restored.
• Fresh independent G3a2 review and exact archive identities are retained in .planning/c5b19-foundation and the recovery checkpoint.

Exact delivery and review

• Archive PR #38 remains deliberately draft for the unfinished full experiment. Published head: 2274a6c7c751ded537541438f473e81ccd293457; reviewed source: c4d3c33ed04c1dff213e2c69064a6113892d9653. The follow-up only records review acceptance.
• Fresh review instance 1/3 returned Ready. One P3 stale merge instruction was corrected and verified in the same pass; no code findings remain. Full report and independent preliminary ledger are retained in this PR.
• Final documentation site build and diff checks passed. This canonical PR is intentionally ready for review; neither PR is merged by this delivery.

Hosted acceptance

Exact head 36bc83f46b404f9c4e508a582595c7ed430f58fc: CI 38803053712 and CodeQL 38803053865 passed. All applicable PR jobs succeeded; the nightly-only full suite was skipped by event policy. No duplicate or canceled run was present at final readback. Both working trees are clean and all retained commits are pushed to their named PR destinations.