* use ReplayState enum
* extract shared ffmpeg progress helper
* make start call non-blocking with worker thread
* expose replay state on status endpoint and return 202 from start
* cancel in-flight ffmpeg when stop is called during preparation
* add replay i18n strings for preparing and error states
* show status in replay UI
* navigate immediately on 202 from debug replay menus and dialog
* remove unused
* simplify to use Job infrastructure
* tests
* cleanup and tweaks
* fetch schema
* update api spec
* formatting
* fix e2e test
* mypy
* clean up
* formatting
* fix
* fix test
* don't try to show camera image until status reports ready
* simplify loading logic
* fix race in latest_frame on debug replay shutdown
* remove toast when successfully stopping
it gets hidden almost immediately
