# Review by Staff Security Engineer (Round 2)

## Review Complete — Staff Security Engineer (Round 2)

**VERDICT: approve**

### Summary

Both issues from Round 1 have been cleanly resolved:
1. ✅ **Dead test stub removed** — no more duplicate `TestCleanWorkingTree`
2. ✅ **Safety-net populates `task_results`** — uses `setdefault` correctly to avoid overwriting

All 6 functional requirements are implemented. All 218 tests pass (22 new, zero regressions). No secrets in committed code.

### Remaining Observations (Non-blocking)

1. **Error messages not sanitized before prompt injection** — `previous_error` is truncated to 4000 chars but not passed through `sanitize_untrusted_content()`. Low risk since errors originate from the same sandbox. Recommend follow-up.
2. **No ceiling on `max_task_retries`** — Per-task budget caps limit financial blast radius, but recommend adding an upper bound (e.g., 5) in a follow-up.
3. **`_drain_injected_context()` inside retry loop** — Cosmetic; retry may get empty injected context if provider is destructive.

**Ship it.** The implementation is security-conscious where it matters: destructive git commands are sandboxed with timeouts and error handling, sensitive file filtering is preserved, and the audit trail provides full observability.

VERDICT: approve

FINDINGS:
- [src/colonyos/orchestrator.py]: `previous_error` injected into retry prompt without `sanitize_untrusted_content()` — low risk since error originates from same sandbox, recommend follow-up
- [src/colonyos/config.py]: No upper bound on `max_task_retries` — per-task budget caps limit blast radius, recommend ceiling in follow-up
- [src/colonyos/orchestrator.py]: `_drain_injected_context()` inside retry loop may yield empty context on retries if provider is destructive — cosmetic

SYNTHESIS:
The two issues from round 1 (dead test code, incomplete safety-net) have been cleanly addressed. The implementation is well-scoped and security-conscious: destructive git commands are properly sandboxed with timeouts and error handling, sensitive file filtering is preserved, error truncation bounds prompt injection surface, and the audit trail provides full observability. The remaining observations are all low-risk, non-blocking items suitable for follow-up. Ship it.
