# Review by Linus Torvalds (Round 4)

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Here's my review as Linus Torvalds:

VERDICT: approve

FINDINGS:
- [src/colonyos/server.py:303-340]: POST /api/runs returns `{"status": "launched"}` without `run_id`, deviating from PRD FR-6. Acceptable pragmatic trade-off since run_id is assigned async by the orchestrator.
- [src/colonyos/server.py:206-237]: Manual field-by-field config update mapping is tedious but correct — prevents mass-assignment. Acceptable for current scope.
- [web/src/components/ArtifactPreview.tsx:39-125]: Hand-rolled markdown renderer with entity-escape-first pattern. Adequate for localhost tool; not what I'd ship for a public-facing service.
- [tests/conftest.py]: pythonpath includes `tests/` for conftest imports — slightly unusual but functional.

SYNTHESIS:
This is a solid, well-structured implementation that does the simple and obvious thing at every decision point. The CI fix is a one-liner (adding `colonyos[ui]` to dev extras) — exactly what it should be. The server code is straightforward FastAPI with no clever abstractions: each endpoint is a flat function that validates input, calls the data layer, and returns JSON. The auth is simple bearer token with constant-time comparison via `secrets.compare_digest`. The write endpoints have explicit field-by-field mapping that prevents mass-assignment. The semaphore-based rate limiting handles failure modes correctly (thread creation failure releases the semaphore, verified by test). The frontend is clean React with proper error handling, polling with cleanup, and a layered XSS defense (server-side `sanitize_untrusted_content` + client-side entity escaping + allowlisted tag filter). The only meaningful spec deviation is POST /api/runs not returning a `run_id`, which is an inherent limitation of the async orchestrator design and is handled gracefully by polling. No commented-out code, no placeholder implementations, no unnecessary abstractions. All 74 changed files serve a clear purpose. Ship it.