# Decision Gate: Parallel Slack Intake — Decouple Triage from Pipeline Execution

**Branch:** `colonyos/when_a_slack_message_comes_i_want_it_to_be_proce_fd0c6a144b`
**PRD:** `cOS_prds/20260331_150608_prd_you_are_a_code_assistant_working_on_behalf_of_the_engineering_team_the_following.md`
**Date:** 2026-03-31

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## Persona Verdicts

| Persona | Verdict |
|---------|---------|
| Andrej Karpathy | **approve** |
| Linus Torvalds | **approve** |
| Principal Systems Engineer (Google/Stripe) | **approve** |
| Staff Security Engineer | **approve** |

**Tally: 4/4 approve, 0 request-changes**

## Finding Summary

| Severity | Count | Details |
|----------|-------|---------|
| CRITICAL | 0 | — |
| HIGH | 0 | — |
| MEDIUM | 1 | Transient exception tuple may miss HTTP-client-specific exceptions (e.g., `httpx.ReadTimeout`). Fail-safe: message is marked `triage-error`, not dropped. |
| LOW | 2 | Duplicated error-handling blocks (~14 lines each); `ConnectionError` redundant with `OSError` in Python 3. |

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```
VERDICT: GO
```

### Rationale
All four personas unanimously approve. The implementation correctly removes `agent_lock` from the stateless triage path (FR-1/FR-2), adds bounded retry with proper transient/non-transient separation (FR-4), marks failed triages as `triage-error` to prevent redelivery loops (FR-5), and closes the TOCTOU rate-limit gap by moving `increment_hourly_count` into the `state_lock` critical section (FR-6). Zero CRITICAL or HIGH findings. The one MEDIUM finding (exception tuple coverage) fails safe — missed retries still result in proper error marking, not message loss.

### Unresolved Issues
(none blocking)

### Recommendation
Merge as-is. Consider a follow-up to inspect `triage_message()`'s actual exception surface and add any HTTP-client-specific timeout types (e.g., `httpx.ReadTimeout`) to the transient exception tuple.
