# Decision Gate: `colonyos cleanup`

**Branch**: `colonyos/i_want_to_add_a_cleanup_command_that_basically_looks_for_things_to_optimize_and`
**Date**: 2026-03-19

## Persona Verdicts

| Persona | Round 1 | Round 2 |
|---------|---------|---------|
| Andrej Karpathy | approve | approve |
| Linus Torvalds | request-changes | approve |
| Principal Systems Engineer | approve | approve |
| Staff Security Engineer | request-changes | approve |

**Round 2 Tally: 4/4 approve**

## Key Issues Resolved Between Rounds

1. **`lstrip("* ")` → `removeprefix("* ")`** — Fixed. Linus confirmed in round 2.
2. **AI scan not composing with `base.md` (FR-26 violation)** — Fixed. Both Security and Systems Engineer confirmed in round 2.
3. **Fail-open PR check → Fail-closed** — Fixed. Security Engineer confirmed in round 2 that exceptions now skip the branch with "unable to verify PR status."
4. **Frozen dataclasses with mutable defaults** — Addressed/documented. Linus confirmed in round 2.

## Remaining Minor Issues (None blocking)

- `*.egg-info` in `_SKIP_DIRS` never matches (glob pattern vs literal comparison) — dead code, cosmetic
- `branch_retention_days` config field defined but unused — premature config for deferred feature
- Missing CHANGELOG update (task 8.4 marked done but no diff) — documentation gap
- Sequential `check_open_pr` calls O(N) per branch — performance concern at scale, acceptable for v1
- Second-precision timestamp in audit log filenames — theoretical collision risk
- `Phase.REVIEW` reused for AI scan — semantically imprecise but functionally correct

```
VERDICT: GO
```

### Rationale
All four personas approve in round 2 after the critical round 1 issues were addressed: the `lstrip` bug was fixed to `removeprefix`, the AI scan now properly composes with `base.md` satisfying FR-26, and the PR safety check was changed from fail-open to fail-closed. All 27 functional requirements are implemented, 169+ new tests pass with no regressions, and the security posture is strong (dry-run default, read-only AI tool allowlist, `git branch -d` not `-D`, fail-closed safety checks).

### Unresolved Issues
- None blocking. Minor items listed above are suitable for follow-up.

### Recommendation
Merge as-is. The remaining minor issues (`*.egg-info` skip pattern, unused config field, CHANGELOG, timestamp precision) can be addressed in a follow-up cleanup — fittingly, by running `colonyos cleanup scan` on itself.
