docs(devlog): close the round-2 follow-up unit

[lidge-jun]

Summary

• Close the round-2 follow-up unit with a record of what landed across the six lanes, the two incidents the round produced, and the approval rule the maintainer added because of them.
• Documentation only. Every pull request it references is already on dev.

Verification

• Every pull request number, lane and subject in the table was read back from the merged commits on dev.
• Documentation only; no source, test or workflow changes.

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.

[chatgpt-codex-connector]

Codex Review Summary

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-20T16:42:10.262204Z	93ea633	PR opened

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[github-actions]

✅ Deterministic PR hygiene checks passed.

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Reviewing files that changed from the base of the PR and between 64b0eca and 93ea633.

📒 Files selected for processing (1)

• devlog/_plan/260920_round2_followups/090_closeout.md

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[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 93ea633590

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[chatgpt-codex-connector]

Move the closed unit into _fin

This commit declares the unit closed but leaves the entire unit under devlog/_plan/, so completed work continues to appear in the open-work queue. Move 260920_round2_followups to devlog/_fin/ as part of this closeout; repository guidance explicitly reserves _plan for open units and requires closed units to be moved.

AGENTS.md reference: AGENTS.md:L107-L110

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[chatgpt-codex-connector]

Remove completed R3 work from the open list

This section still lists both #5261 remainders and #5292 as open, although the landed table above says #5332 fixed the launch and refresh failures, and 030_lane_r3.md records that #5292 was already closed by #5300 before the lane opened. Leaving these entries here makes the closeout contradict the merged history and can cause already-completed work to be scheduled again; retain only the genuinely open remainders.

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