# Review by Andrej Karpathy (Round 1)

## Review Complete — Andrej Karpathy

**VERDICT: approve**

### Key Findings

1. **[Minor Bug] `src/colonyos/cli.py:2409`** — Rich markup double-nesting for `very-large` and `massive` category display. The `[bold yellow]` style gets wrapped in extra brackets, producing `[[bold yellow]]` which won't render correctly. The `large` → `yellow` case works fine.

2. **[Minor Bug] `src/colonyos/cli.py:2226`** — Branch last-commit-date is lost in the display table. `deleted_local` stores only branch names as strings, so the date column shows empty for candidates.

3. **[Gap] `src/colonyos/cli.py:2432-2473`** — The `--ai` scan path has no test coverage. A mock-based test would prevent regressions on the prompt construction and report-saving logic.

4. **[Observation] `src/colonyos/cli.py:2451`** — AI scan reuses `Phase.REVIEW` enum, which is semantically imprecise but functionally correct for v1.

### Synthesis

This is a well-architected implementation that correctly separates deterministic git/filesystem operations from stochastic LLM-powered analysis. The key design decision — making branch pruning and artifact cleanup zero-budget operations while gating AI analysis behind an explicit `--ai` flag — is exactly right. The code treats prompts with appropriate rigor: `cleanup_scan.md` is a structured instruction template with explicit constraints, and `synthesize_refactor_prompt()` constructs targeted prompts from scan metrics rather than vague instructions. The dry-run-by-default pattern with `--execute` opt-in is the correct safety posture. All 62 tests pass. The two minor bugs are cosmetic and don't affect correctness. Ship it.