ci: add workflow_dispatch to release-please

[chrischall]

Adds the workflow_dispatch trigger to release-please.yml so it can be fired manually from the Actions UI. Same change that landed on the other migrated repos.

[claude]

Claude finished @chrischall's task in 35s —— View job

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PR Review: ci: add workflow_dispatch to release-please

Analysis

Change summary: Adds workflow_dispatch: trigger to .github/workflows/release-please.yml (line 20), enabling manual workflow triggering from the GitHub Actions UI.

Review findings:

✅ Correctness: The syntax is correct. Adding workflow_dispatch: as a trigger is the standard GitHub Actions pattern for manual triggering.

✅ Alignment with conventions: The change aligns with CLAUDE.md, which already references workflow_dispatch for the release pipeline: "GitHub Actions → Tag & Bump (manual workflow_dispatch)"

✅ Consistency: The PR description notes this follows the same pattern applied to other migrated repos, maintaining consistency across the project's release infrastructure.

✅ Security: No security concerns — workflow_dispatch is a safe trigger type with no elevated permissions.

✅ Impact: Minimal, non-breaking change that only adds an optional trigger mechanism.

Verdict

No issues found — verdict: PASS ✅

This is a straightforward, correct change that extends the release-please workflow's capability to support manual triggering without any downsides.