Add revision tracking and compare-and-set (CAS) semantics to operation state
stores, enabling atomic state transitions and preventing lost updates. Extend
the OperationStateStore interface with getOpStateRecord and compareAndSetOpState
methods. Update orchestrator and worker runtime to utilize CAS for marking
operations as failed only if the state is unchanged. Enhance in-memory,
JetStream, and test control plane implementations to support revision logic.
This change improves concurrency safety and correctness of operation state
management across distributed components.
Add orphaned operation recovery logic to detect and mark stale in-flight pdf_layout jobs as failed during worker startup. Extend OperationStateStore with listOpStates for state enumeration. Update tests and documentation to cover recovery behavior and new environment variable COMPUTE_PDF_JOB_ATTEMPTS.
move worker startup logic from server.ts to runtime.ts for better modularity
add worker-loop-policy.ts for loop control abstraction
delete legacy unit tests under tests/unit/ related to compute worker and control-plane
add vitest config and test directories for compute-core and compute-worker
add vitest workflow for CI
update package.json scripts for new test commands and add vitest as dev dependency
BREAKING CHANGE: worker entrypoint is now compute/worker/src/runtime.ts instead of server.ts; legacy Playwright-based unit tests for compute worker are removed in favor of Vitest
