ci(release): accept a base_commit on the release candidate

[Troublor]

release-candidate gained a base_commit input in megaeth-labs/.github, for releasing a commit that is not the tip of the default branch. A workflow_dispatch input has to be declared in each workflow before it can be passed, so without this the feature cannot be dispatched here at all.

Two additions, matching the updated workflow-templates/release-candidate.yml:

• the base_commit dispatch input, optional and blank by default;
• passing it through to the propose step.

Blank keeps today's behaviour exactly: the candidate PR goes to the default branch and the cut job creates the release branch at the merge commit. Given a commit, propose cuts release-vX.Y.Z at that commit and aims the candidate PR at it, so the default branch is untouched and cut does not run.

gh workflow run release-candidate.yml -R OWNER/REPO --ref DEFAULT \
  -f version=X.Y.Z -f base_commit=$(git rev-parse origin/DEFAULT~4)

The commit must be reachable from the default branch. Note that v* tags are not, because settlement commits the dated changelog on the release branch. Full guide: megaeth-labs/.github/.github/actions/RELEASE.md, section "Releasing a commit that is not the tip".

actionlint clean.

🤖 Generated with Claude Code

[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 2026-09-11T08:59:53.707590Z	c72b176	PR opened

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[mega-maxwell]

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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 clean

Last reviewed: c72b1765..02e654da · updated 2026-09-11T09:26:57+00:00

New this round: 0 finding(s), 0 question(s) · Resolved this round: 0 · Open questions: 0