Adds author_proofs.py, the author-side counterpart of review_proofs.py
(#173), turning the branch-drift incident from PR #176 into fail-closed
gates:
- verify_branch_for_commit: the current branch must equal the intended
feature branch and may never be a protected branch (master, main,
develop, development, dev); missing state fails closed.
- detect_branch_drift: any branch or HEAD change between validation time
and commit time — including an external branch switch in a shared
worktree, which is treated as an expected event to detect — blocks the
commit until reconciled.
- verify_push_target: a push requires the local branch, remote target
branch, and intended issue branch to all match, none protected.
- assess_protected_branch_commit: an accidental protected-branch commit
must never be pushed, requires repair, and the repair must be reported;
pushing the accident or silently continuing is a violation.
- build_commit_push_report: final-report block carrying the branch proof
before commit and before push; any failed proof, drift, or violation
makes the status blocked.
tests/test_author_proofs.py (27 tests) covers the issue's harness
assertions: commit on master blocked; drift between validation and commit
blocked; push target mismatch blocked; shared-worktree branch switch
detected; repair path cannot silently continue without reporting.
SKILL.md section E and templates/start-issue.md now require recording the
validation-time branch/HEAD, the branch proof before commit, the branch
proof before push, and non-silent accident repair. No review/merge/
permission gate is weakened.
Closes#177
Co-Authored-By: Claude Fable 5 <[email protected]>
