# Review by Linus Torvalds (Round 5)

VERDICT: approve

FINDINGS:
- [src/colonyos/orchestrator.py]: `_extract_review_findings_summary` is the most complex new code (~50 lines) but justified by 3-tier fallback for stochastic LLM output. Logic is correct.
- [src/colonyos/sanitize.py]: Sanitization pass ordering is correct (links → escaping → mentions → blockquotes). Audit logging on neutralization is a good zero-cost addition.
- [tests/test_slack_formatting.py]: 137 tests with end-to-end sanitization integration tests and pathological-input size cap tests. Comprehensive coverage.

SYNTHESIS:
This is the kind of code I like — boring, obvious, no cleverness. String manipulation functions that take existing data, sanitize it, format it, and truncate it. The data structures are plain dicts and lists. Every function fits on a screen. The sanitization is layered correctly and applied at all 7 ingress points. The 3-tier fallback in findings extraction handles real-world LLM output variance without overengineering. 137 tests cover the actual production failure modes (injection, truncation, overflow). All four rounds of review findings have been addressed. Zero new LLM calls, +1,371 lines with 681 being tests. Ship it.

Review artifact saved to `cOS_reviews/reviews/linus_torvalds/20260331_210000_round4_when_you_output_followups_in_the_thread_on_slack_a938599349.md`.