Remove: untrack files, remove manifest entries, save. 2 tests.
Verify: check blobs against manifest hashes, report ok/mismatch/missing. 3 tests.
List: return all tracked entries, CLI formats by type. 2 tests.
Diff: compare stored blob vs current file, simple line diff. 3 tests.
Each command in its own file (garden/<cmd>.go) for parallel development.
Remove, verify, list implemented by parallel worktree agents; diff manual.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
