B-O8MK-concurrent-tsc-corrupts-incremental-cache
Running two ‘sdlc quality run’ gates concurrently (overlapping tsc —noEmit) corrupted the shared incremental cache and produced a spurious tsc FAIL during parallel task-work on 2026-07-18. Under the parallel-task workflow, quality gates must be serialized — the runner should either isolate each run’s tsbuildinfo (per-worktree) or lock tsc to one run at a time.