chore(release): candidate v2.0.20

[mega-maxwell]

Release candidate v2.0.20 (was 2.0.18).

Merging this PR creates the release branch release-v2.0.20 at the merge commit.

It creates no tag; the tag is cut once, at settlement, by release-settle → release-publish.

Changelog: this release's entry drafted under ## v2.0.20 (settle stamps the date on the release branch);
previous release's entry synced from its tag: inserted.

[mega-maxwell]

Claude review status

Living comment — rewritten in place. The review workflow keeps this single comment up to date instead of posting a new one each round, so it always describes the latest reviewed commit and the earlier text is intentionally gone. No reply is needed here; reply to a finding in its own review thread, and answer an open question in a reply on this PR. The next review round reconciles your answer.

⏭️ Review skipped

Not reviewing head 4bb241a3 · updated 2026-10-10T04:16:56+00:00

This pull request is not a review target: opened by mega-maxwell[bot], the reviewer's own identity. No review round runs for it. Anything listed below is from an earlier round.

[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: 4bb241a31b

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[chatgpt-codex-connector]

Remove already-released v2.0.18 changes

PRs #195 and #194 are already attributed to v2.0.18 below, as are #203, #201, and #200 later in this new section. No revert or reintroduction occurred between these entries, so listing them again under v2.0.20 makes the generated changelog and eventual GitHub release notes incorrectly present five previously shipped changes as part of this release; remove those duplicate entries before settlement.

AGENTS.md reference: AGENTS.md:L3-L5

Useful? React with 👍 / 👎.

[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 2026-10-10T04:16:33.491348Z	4bb241a	PR opened

ℹ️ About Codex in GitHub

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Codex reacts with 👀 while any review is running, comments if it has suggestions, and reacts with 👍 once all reviews finish with no findings.