Commit message (Abacus land.commit, Bitwarden)

Abacus calls this from its land.commit stage, which gives you the change, the bead's title, its source (the issue or ticket the work tracks, or none) and each acceptance criterion with its evidence.

1. Invoke Skill(bitwarden-delivery-tools:committing-changes) and follow its commit message format, type keyword and body rules.
2. The ticket prefix, settled here so the stage never stops to ask:
   • When the bead's source is a Jira ticket (a key such as PM-1234, or a bitwarden.atlassian.net/browse/ link), use that key: [PM-1234].
   • Otherwise (a GitHub issue, any other link, or no source), drop the bracket entirely: <type>: <imperative summary>. Never invent a ticket key or write a placeholder in its place.
3. Every commit uses the full format. The skill's followup-commit exemption (a short summary with no prefix or body after a branch's first commit) does not apply here: Abacus lands unattended, so each commit it makes carries the ticket prefix (when there is a ticket), the type keyword and a body, whatever precedes it on the branch.
4. Compose the message only. The Abacus stage records it, and abacus-finalize commits it and appends Abacus's own trailers, so leave trailers out. Skip the skill's steps that act: the stage already settles the branch (it is Abacus's) and the pre-commit checks (the gate and the reviewer have run), and staging or committing belongs to abacus-finalize.