# Review by Principal Systems Engineer (Google/Stripe caliber) (Round 1)

Now I have a comprehensive picture. Let me write the review.

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## Review: Principal Systems Engineer Perspective

### Checklist Assessment

**Completeness:**
- [x] FR-1 (Intent Classification): ✅ `RouterCategory` enum with 4 categories, classification prompt, parsing
- [ ] FR-2 (Reuse Slack Triage): ❌ **Not done.** No changes to `slack.py` at all. The router is a parallel implementation, not a refactoring of shared logic
- [x] FR-3 (Two-Stage Design): ✅ Route → Q&A agent path works for questions
- [ ] FR-4 (Entry Point Integration): ⚠️ **Partial.** `colonyos run` is integrated. REPL (`_run_repl()` lines 309-447) still sends everything directly to `run_orchestrator()` with zero routing
- [x] FR-5 (Fallback Behavior): ✅ Fail-open on low confidence, but **audit logging is missing** (see below)
- [x] FR-6 (CLI Flag for Bypass): ✅ `--no-triage` flag added
- [x] FR-7 (Configuration): ✅ `RouterConfig` with all fields, validation, load/save
- [ ] FR-8 (Audit Logging): ❌ **Broken.** `_log_router_decision` is imported in `cli.py:613` but **the function does not exist in `router.py`**. This will crash at runtime when routing is triggered.

**Quality:**
- [x] Tests pass (136 passed)
- [x] Code follows existing conventions (dataclass patterns, `run_phase_sync` usage)
- [x] No unnecessary dependencies
- [ ] **Runtime crash**: The missing `_log_router_decision` import will raise `ImportError` the moment the router path is hit in production

**Safety:**
- [x] Input sanitization via `sanitize_untrusted_content()`
- [x] Q&A agent sandboxed to read-only tools
- [x] Router has zero tool access
- [x] No secrets in code

### Task File Status
All 10 task groups are marked `[ ]` (incomplete) in the task file, despite tasks 1-6 being substantially implemented. Tasks 7 (REPL), 8 (Slack), 9 (Audit Logging), and 10 (Documentation) are genuinely unfinished.

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VERDICT: request-changes

FINDINGS:
- [src/colonyos/cli.py:613]: **RUNTIME CRASH** — imports `_log_router_decision` from `colonyos.router`, but this function does not exist. Every routed query will hit `ImportError` at runtime. This is a ship-blocking P0.
- [src/colonyos/router.py]: Missing `_log_router_decision()` function (FR-8). Audit logging for routing decisions is completely unimplemented — no `.colonyos/runs/triage_<timestamp>.json` files are written.
- [src/colonyos/cli.py:309-447]: REPL integration (FR-4, Task 7.0) is not done. `_run_repl()` sends all non-command inputs directly to `run_orchestrator()` without routing. This means the REPL — one of only two required entry points — gets zero benefit from the router.
- [src/colonyos/slack.py]: Slack triage refactoring (FR-2, Task 8.0) is not started. The PRD specifically requires factoring out shared logic from `triage_message()` into the router module. Instead, the router is a standalone parallel implementation with no code sharing.
- [cOS_tasks/...]: All task checkboxes remain unchecked despite tasks 1-6 being implemented.

SYNTHESIS:
The core routing architecture is sound — the two-phase design (cheap haiku classification → targeted execution), the fail-open behavior, the read-only Q&A sandboxing, and the config/parsing structure all follow good patterns. The `_parse_router_response` function handles edge cases well (markdown fences, invalid JSON, unknown categories) and always fails open. However, the implementation has a **ship-blocking runtime crash** (`_log_router_decision` missing), and three of the four functional requirements beyond basic routing (REPL integration, Slack refactoring, audit logging) are unfinished. This is roughly 60% complete — the foundation is solid but the integration work that delivers user-facing value for REPL and Slack users, plus the observability layer needed to debug routing decisions at 3am, still needs to be built.
