# Review by Andrej Karpathy (Round 1)

## Review Complete — Andrej Karpathy

**VERDICT: approve** ✅

### Summary

This is a clean, well-scoped Textual TUI implementation that nails all 8 functional requirements from the PRD:

- **Architecture**: Frozen dataclass messages over a `janus` queue cleanly bridge the synchronous orchestrator thread to Textual's async event loop. No shared mutable state, no event loop conflicts. This is the right concurrency pattern.
- **Code quality**: Reuses existing `TOOL_STYLE` maps, `TOOL_ARG_KEYS`, and `sanitize_display_text()` instead of reimplementing. Zero commented-out code, zero TODOs.
- **Tests**: 84 new tests covering adapter contract, widget behavior, full app integration, and CLI entry points. The `FakeSyncQueue` pattern for testing the adapter without Textual is smart. **1687 existing tests pass with zero regressions.**
- **Dependencies**: Only `textual>=0.40` and `janus>=1.0`, both optional under `[tui]` extra. Zero impact on base install.

### Key Findings

| File | Finding |
|------|---------|
| `cli.py` | `_current_instance` singleton is a code smell — use closure/DI in v2 |
| `adapter.py` | Text buffering means no transcript updates during long turns — v2 should add streaming with debounce |
| `adapter.py` | `on_text_delta` drops text inside tool calls — matches contract but should be documented |
| `composer.py` | `_on_key` override touches Textual internals — fragile against upgrades |
| `status_bar.py` | Spinner timer runs continuously even when idle (negligible cost) |

### Bottom Line
Ship it. The implementation is minimal, correct, and well-tested. The main gap (no mid-turn text streaming) is explicitly deferred per the PRD and should be the very next iteration.
