anthony.wen
f5849dde0c
- update the watcher start helper to stop any stale watcher instance for the same requested parent build name and remove its old state directory before starting fresh - document that reused parent build names must not inherit stale cancelled, posted, state.json, or subruns state from older runs - update the watcher install and design docs so the controller workflow explicitly treats stale reused-build-name state as part of startup cleanup