# Review by Andrej Karpathy (Round 2)

Here's my review as Andrej Karpathy:

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VERDICT: approve

FINDINGS:
- [src/colonyos/slack.py L693-710]: `confidence` field in TriageResult is parsed but never used for decision-making — dead data
- [src/colonyos/slack.py L627-663]: Triage prompt contradicts its own parser by asking for no markdown fencing then handling fences
- [src/colonyos/slack.py L640-646]: Triage classifier would benefit from few-shot examples for better accuracy at haiku tier
- [src/colonyos/orchestrator.py L1826-1828]: No rollback of committed changes when Verify phase fails, leaving branch in broken state
- [src/colonyos/orchestrator.py L1734-1751]: Thread-fix checkout safety depends on external semaphore — implicit contract not documented
- [src/colonyos/instructions/thread_fix.md]: Python `.format()` for template interpolation will break on literal `{`/`}` in user input
- [src/colonyos/cli.py L2277-2740]: QueueExecutor at 460 lines inside a click command is growing unwieldy
- [src/colonyos/slack.py L72-87]: Role-anchoring preamble could be more effective with declarative framing

SYNTHESIS:
This is a well-executed pair of features that brings ColonyOS from a CLI-only tool to a conversational Slack-integrated system. The security posture is strong — XML stripping, Slack link sanitization, git ref validation, HEAD SHA tamper detection, rate limiting, circuit breakers, and daily budget caps form a solid defense-in-depth stack. The architectural decisions are sound: haiku for triage (cheap, no tools), sonnet for implementation, structured JSON output for classification. My main concerns are at the prompt engineering level — the triage classifier lacks few-shot examples and the confidence score is dead weight, the role-anchoring could be tighter, and there's a real risk of broken branch state when verify fails without rollback. None of these are blocking, but the verify-failure rollback is the one I'd prioritize fixing before heavy production use. All 1237 tests pass. Approve with the recommendation to address the rollback gap and add few-shot examples to the triage prompt.