finish-branch

name	finish-branch
description	Integrate a merge-ready branch into the trunk — fast-forward check, merge, regenerate backlinks, CHANGELOG, delete branch (local+remote), push with confirmation. TAOM trunk-based, not Git Flow.

Finish Branch (trunk integration)

Integrate a completed branch into TAOM's trunk (bannerlord-1.4.5, the de-facto master). This is the post-/ship step: /ship gates that a feature is review-clean; this skill does the actual git integration + doc-consistency cleanup that we otherwise run by hand and forget steps in.

Not git-workflow:finish — that's Git Flow (develop/feature/release/hotfix + version tags). TAOM is trunk-based: ephemeral taom-* branches merge into bannerlord-1.4.5, no tagging.

When to invoke

• A branch's commits are reviewed and ready to land on bannerlord-1.4.5.
• Skip for a branch that still needs /ship (run that first), or work that was committed directly to trunk (no branch to finish).

Steps

1. Pre-flight (read-only — never skip)

• git status --short — working tree must be clean. If dirty, stop and surface (the user may have parallel in-flight work that shouldn't ride along).
• Confirm the base: default bannerlord-1.4.5. If $ARGUMENTS names a different base, use it.
• Fast-forward check: git log --oneline <base> ^<branch> — empty output = base hasn't advanced past the branch point, so the merge is a clean FF. Non-empty = base moved; it'll be a real merge that may conflict — surface the divergence and preview with git merge --no-commit --no-ff (then git merge --abort) before committing. Never force.

2. Merge

• git checkout <base> && git merge <branch> — expect "Fast-forward".

3. Regenerate backlinks (doc consistency)

• python tools/build_backlinks.py — the merge may have introduced docs whose ## Referenced by footers drifted.
• Only stage footer changes for files the merged branch actually touched. If build_backlinks.py also wants to update footers in unrelated docs (parallel-session work), that's not this branch's concern — leave those for the owning workstream. Commit the in-scope footer updates as docs(backlinks): regenerate footers for <area>.

4. CHANGELOG

• If the merged branch didn't already include a CHANGELOG entry, add one under today's date summarizing the landed work. Commit.

5. Delete the merged branch

• git branch -d <branch> — the -d (not -D) refuses if the branch isn't fully merged; that safety is intentional, don't override with -D.
• git push origin --delete <branch> — only after local delete succeeds (confirms it was merged).

6. Push the trunk

• Confirm with the user before pushing bannerlord-1.4.5. It's the becoming-master branch; validate-push.sh warns on master/main pushes. Do not auto-push — surface "ready to push N commits" and wait, unless the user pre-authorized the push for this run.

Gotchas

• FF vs real merge: the step-1 check is the whole game. A clean FF is safe and trivially reversible (git reset --hard <branch>@{1}); a conflicting real merge needs human eyes. Surface, don't force.
• Parallel-work footer drift: build_backlinks.py regenerates the whole tree. After a merge there are often footer updates in docs the branch never touched (another session's lord-skills/bandit work). Don't sweep those into this commit — git add only the docs in the branch's diff.
• git branch -d as a merge gate: if it refuses, the branch isn't actually merged into the current base — investigate, don't -D.
• CHANGELOG hook: if the branch touched .claude/, CLAUDE.md, or AGENTS.md, the pre-commit hook (check-changelog-changed.sh) requires CHANGELOG.md in the post-merge commit set — usually already satisfied by the branch's own CHANGELOG entry.
• Push is shared state: the user has historically run trunk pushes themselves. Default to offering, not doing.

See also

• .claude/skills/ship/SKILL.md — the pre-merge completion gate this skill follows.
• tools/build_backlinks.py — step-3 backlink regeneration.
• .claude/hooks/validate-push.sh — the push guard referenced in step 6.