Build ErsatzTV Image / CI image pin matches docker/ci (pull_request) Successful in 10s
Build ErsatzTV Image / Formatting (changed .cs conform to .editorconfig) (pull_request) Successful in 14s
Build ErsatzTV Image / Docs update reminder (pull_request) Successful in 9s
Build ErsatzTV Image / decisions.md append-only (pull_request) Successful in 33s
Build ErsatzTV Image / API docs in sync (OpenAPI + endpoint index) (pull_request) Successful in 1m24s
Build ErsatzTV Image / Functional E2E (curl contracts) (pull_request) Successful in 15m4s
Build ErsatzTV Image / EF migration integrity (SQLite + MySql) (pull_request) Successful in 18m25s
Build ErsatzTV Image / Build & test (.NET) (pull_request) Successful in 18m37s
Build ErsatzTV Image / Build & push image (amd64) (pull_request) Has been skipped
Adds "Flow C" to scripts/e2e-functional.sh, the last deferred lock-contention flow from #363. A playout build is enqueued onto the single-consumer WorkerService channel and the trigger returns before BuildPlayoutHandler acquires the lock, so an accepted trigger does not prove the lock is held. Flow C makes it deterministic: seed a Classic Flood schedule over a few short ffmpeg episodes, crank PlayoutDaysToBuild=5 (~43k items ~= ~1s build), then POLL GET /playouts/{id} until isLocked:true before firing. Asserts PUT /playouts/{id} -> 409, reset -> 409, and the list-projection isLocked:true while locked; then isLocked:false + PUT -> 200 after the build (proving the 409 is lock-specific). Each racing assertion is guarded so a build that finishes mid-flight degrades to an advisory skip, never a false red; the whole flow self-skips without ffmpeg or if the build is never observed locked. Sized by measurement on a fresh instance -- going wider is counter-productive (a 777k-item build saturates the single worker with post-build gap/overlap jobs). Verified green across 6 fresh-instance runs; cold adversarial review MERGEABLE. Docs: docs/e2e-local.md + docs/ci-cd.md updated to describe Flow C and drop it from the "deferred" lists. fixes #444 Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>