2a474bcf72
The bundled-skill sync stamp added in the cherry-picked salvage commit parsed .git/HEAD and looked for a loose ref file in the worktree gitdir only, so two real cases hit the unresolved branch: - repos after `git gc` where active refs live in packed-refs - linked worktrees, whose branch ref lives in <commondir>/refs/heads/ (verified on the worktree this salvage was built in) Both fell back to a constant-string fingerprint, so post-commit launches would never re-run the real skill sync. Now we resolve packed-refs and check both the worktree gitdir and the common dir for loose refs. Adds three tests covering: packed-refs resolution, worktree common-dir packed lookup, worktree common-dir loose lookup, and the explicit 'unresolved' marker (still stable + version-fallback-safe).