2 Commits

Author	SHA1	Message	Date
NimBold	1ec4d2aa17	docs: add download queue coordinator implementation plan ... 12 TDD tasks covering: QueueManager scaffold, dispatcher with idle-park and CAS resize, uniform permit parking, gid-race handling, reordering, AppState wiring, aria2 WS poller + completion listener, frontend store refactor, queued UI visuals, deprecated command cleanup, smoke tests.	2026-06-16 17:02:22 +03:30
NimBold	4b7c00dae3	docs: add download queue coordinator design spec ... Backend QueueManager as sole concurrency gatekeeper with Arc<Semaphore>, uniform permit parking for aria2/media/native, CAS-based lazy semaphore shrink, idle-park dispatcher, and reactive frontend store. Design surfaced and fixes four correctness bugs: - idle CPU spin on empty queue (peek-then-Notify park) - fetch_sub underflow to usize::MAX (CAS retirement loop) - aria2 permit leak on early RPC return (permit parking in active_permits) - gid completion race before aria2_gids store (pending_completion buffer)	2026-06-16 16:48:05 +03:30