The Servarr apps (TV, movies), each self-contained from hal's shared arr
client. Tools: status, library, search, queue, calendar. Events by polling the
download queue: a new item emits module.<app>.<thing>.grabbed, an item that
leaves as completed emits module.<app>.download.completed — the exact key plex
consumes to rescan. A grab that left as failed/warning is not reported as a
completion. Both typecheck; manifests parse.
