v2.3.11 — Polish round 4: LibraryView perf · unsubscribe race · a11y

[2.3.11] — 2026-04-27

Polish round 4 — performance, race fixes, accessibility hints from a final pre-release audit.

Fixed — LibraryView performance on heavy listeners

• @Query was fetching every Episode in the database, on every render. The two derived arrays (inProgressEpisodes, freshEpisodes) filtered in Swift after a fetch-all. With 30 subscriptions and a 2k-episode back catalog (typical OPML import from a long-time listener), every Library render hydrated 2,000 model objects into memory just to drop most of them.
• Now uses two predicate-filtered @Query declarations that push the isSubscribed && !isPlayed [&& playedPosition > 0] check down to SQLite. Only the matching rows hydrate.
• Per-podcast counts pre-bucketed once instead of recomputed inside the ForEach over subscribed shows. The prior loop was O(N×M) — for each podcast row, it filtered freshEpisodes to count that podcast's unplayed episodes. With 30 podcasts and 2k episodes that's 60k iterations per scroll frame. Now O(N+M) total: build a Dictionary<UUID, Int> once, look up by podcast id.

Fixed — race between unsubscribe and currently-playing episode

• PodcastUnsubscribeService deleting downloaded files for an unsubscribed podcast could fire while AVPlayer was mid-read on the local file URL — the file got removed from under the player. Now checks whether the currently-playing episode belongs to the podcast being unsubscribed and pauses playback first via the new PlaybackController.pause() public method. Without this the symptom was either silent corruption or a crash on some iOS versions.

Added — accessibility hints

• PlayerView SPEED Menu — accessibilityLabel("Playback speed") / accessibilityHint("Pick a speed for this podcast"). VoiceOver previously announced just the visual label with no context about the Menu's purpose.
• PlayerView SLEEP Menu — same treatment, with hint that adapts to whether a timer is currently active.