Add lock_provenance metadata on gitea_lock_issue writes and fail closed at
gitea_create_pr when provenance is missing. Final-report validation now
requires explicit External-state mutations disclosure for issue-lock
read/write/delete and blocks mixed author PR creation with reviewer approval.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
Merge prgs/master into feat/issue-274-branches-only-worktrees; keep both
already_landed_reconcile and author_mutation_worktree imports. Allow
branches/ worktrees when PROJECT_ROOT is the session worktree; align
commit-payload tests with branches-only guard (#274).