docs(devlog): record release train 4 account-pool lane

[lidge-jun]

Summary

Records the account-pool lane's release-train-4 outcome: a disposition table for every candidate PR and issue, with comment links, and the coordinator's mid-train change to the merge gate. The only file changed is devlog/_plan/260927_release_train_4/account-pool/040_closeout.md.

Verification

• bun run privacy:scan and bun run structure:check passed.

Checklist

• Scope stays focused and avoids unrelated cleanup.
• Docs or release notes were updated when needed.
• Security-sensitive changes were reviewed for secrets, auth, and unsafe defaults.

[github-actions]

✅ Deterministic PR hygiene checks passed.

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-27T20:10:49.354351Z	815503d	PR opened

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📥 Commits

Reviewing files that changed from the base of the PR and between ae6b0ba and 815503d.

📒 Files selected for processing (1)

• devlog/_plan/260927_release_train_4/account-pool/040_closeout.md

 ____________________________________
< No tests? Bold. Approval? Also no. >
 ------------------------------------
  \
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        \ /\
        ( )
      .( o ).

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[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 815503d00f

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

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[chatgpt-codex-connector]

Record the final-head verification outcome

This closes the lane while naming only an earlier #6106 head and assigning the final dev run to the coordinator; it never records the local union commands/results or the final run's head SHA, URL, and conclusion, despite the final-report contract on line 32 requiring that evidence. A pending, missing, or failed coordinator run is therefore indistinguishable from a verified closeout, so add the final evidence or mark the outcome as pending.

AGENTS.md reference: AGENTS.md:L242-L244

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[chatgpt-codex-connector]

Link the recorded #6087 closure

The row claims that source PR #6087 was closed with thanks, but its evidence link points only to integration PR #6106. Because this closeout's purpose is to preserve each candidate's disposition and line 32 explicitly requires links to closed source PRs, readers cannot verify the claimed #6087 comment or closure; link the #6087 disposition comment or source PR here, with #6106 as a separate integration link if needed.

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