ci / vet-and-test (pull_request) Successful in 1m3s
Why: The task-owned mechanism must reproduce stage progress, partial and empty failures, and source-bound choices without a paid provider call. Evidence: Backend vet/full Go tests and live-tag terminal tests passed; six task-owned HTTP/Playwright cases passed with this fixture. Impact: Evaluation fixture only; model comparison still disables notice turns unless the explicit mechanism browser flag is set. Refs: U3 r0.4 Task 6