chore(release): reconcile release gate hygiene

[code-yeongyu]

Summary

• Cleans the release-wide git diff --check v4.13.0..HEAD blocker caused by one trailing blank line in committed generated-bundle QA evidence.
• Adds a release hygiene evidence packet covering diff-check, conflict/status, evidence reconciliation, release gate source inventory, and WF/AT dependency status.
• Marks final publish readiness as BLOCKED-PENDING-WF-AT because no remote WF/AT PRs were found for the assigned blocker branches.

Changes

• Removes only the final blank line from .omo/evidence/20260625-codex-config-generated-bundle/generated-bundle-false-shorthand-probe.txt.
• Adds RG evidence under .omo/evidence/20260627-release-gate-hygiene/.
• Records current release packet residuals rather than claiming release readiness prematurely.

QA & Evidence

• What was tested: git diff --check v4.13.0..HEAD
  Observed result: RED first on generated-bundle-false-shorthand-probe.txt:23, then exit 0 after the evidence cleanup was committed on current origin/dev.
  Artifact: .omo/evidence/20260627-release-gate-hygiene/red-git-diff-check.txt, .omo/evidence/20260627-release-gate-hygiene/task-6-green-diff-check.txt
  Why sufficient: proves the exact release-wide whitespace gate moved RED to GREEN.

• What was tested: conflict/status and ignored evidence handling
  Observed result: no unmerged paths; RG evidence must be force-added because .omo/* is ignored.
  Artifact: .omo/evidence/20260627-release-gate-hygiene/task-1-status-baseline.txt, .omo/evidence/20260627-release-gate-hygiene/task-8-post-rebase-status.txt
  Why sufficient: proves the PR branch is cleanly based on dev and the evidence is intentionally included.

• What was tested: evidence reconciliation and release packet integrity
  Observed result: current release-summary .omo/evidence/... artifacts are present/tracked; packet fails closed on WF/AT.
  Artifact: .omo/evidence/20260627-release-gate-hygiene/evidence-reconciliation.md, .omo/evidence/20260627-release-gate-hygiene/release-packet.md, .omo/evidence/20260627-release-gate-hygiene/task-7-packet-integrity.txt
  Why sufficient: lets reviewers audit each release-hygiene claim against committed artifacts.

Risks & Residuals

• BLOCKED-PENDING-WF-AT: final publish readiness is still blocked until WF/AT code-fix slices land or the leader supersedes those blockers.
• RG changed evidence/release packet files only; no product runtime code was changed.
• CI still needs to run on this PR after push.

Automated Checks

git diff --check v4.13.0..HEAD
git diff --name-only --diff-filter=U
git ls-files -u

Related Issues

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Summary by cubic

Fixes the release-wide diff check by removing one trailing blank line in .omo/evidence/20260625-codex-config-generated-bundle/generated-bundle-false-shorthand-probe.txt. Adds a reviewer-ready release hygiene packet with RED → GREEN proofs, F1–F4 checks, WF/AT dependency summary, and leader-blocker resolution; final publish remains BLOCKED-PENDING-WF-AT.

• Bug Fixes
  • Removed only the final blank line; no runtime code changed.
  • Committed evidence under .omo/evidence/20260627-release-gate-hygiene/ and plan .omo/plans/release-gate-hygiene.md.
  • Recorded candidate/final git diff --check exits 0, plus PR proof and cleanup receipts.

^{Written for commit 2c3802a. Summary will update on new commits.}

[code-yeongyu]

Thanks for moving the release hygiene slice forward. I’m blocking this PR for two evidence/metadata issues before merge:

1. Every commit message includes Plan: .omo/plans/release-gate-hygiene.md, but .omo/plans/release-gate-hygiene.md is not included in the PR. Please either add that plan file to the PR or remove/amend the footer reference so the committed metadata points at an auditable artifact.

2. .omo/evidence/20260627-release-gate-hygiene/release-packet.md still says the Reviewer Gate is pending, even though the PR now adds f1-plan-compliance.txt, f2-diff-check.txt, f3-evidence-presence.txt, and f4-changed-files.txt. Please update the packet to reflect the completed reviewer/self-review gate and cite those artifacts.

Leader verification note: I independently reran git diff --check v4.13.0..HEAD on the RG branch after the refresh and it exits 0, so the core whitespace fix looks good. This is blocked only on evidence/metadata completeness.

[code-yeongyu]

Leader CI classification: the current macOS typecheck failure is tsgo --noEmit crashing with fatal error: fault / SIGSEGV inside github.com/microsoft/typescript-go/internal/binder, not a TypeScript diagnostic from the RG evidence-only diff. Please either rerun the failed macOS typecheck and get it green, or record this exact external tool-crash classification in the PR evidence if it repeats. The earlier evidence/metadata blockers still apply.