## changelog Changelog
- Hotfix: large-file syncs landed the row in the TV app but the file was unbound and got swept by background GC — title visible, Play did nothing. Root cause: `SyncAllowed` (sent early, accumulates in the inbox during a long upload) was treated as terminal-equivalent to `SyncFinished`.
- Strict `SyncFinished` wait with 120 s cap + 30 s `SyncAllowed` fallback grace. Mini-clips were unaffected because they finished uploading before `SyncAllowed` arrived.
- `Send N to iPhone` no longer no-ops when every file is already on the device — counts files matching the actual pipeline filter and surfaces a disabled, explanatory button.
- `atc.FileProgress` heartbeat sent every 5 s / 10 % during the AFC upload to keep medialibraryd's asset slot warm.
- Cluster-extras — drop a folder of episodes with dub / sub subfolders, pick studios / labels once at cluster level, MediaPorter muxes each episode's extras into the transcode pass with the user-chosen default audio surviving into the TV app.
- External-track scanner — finds sibling dubs (`.mka` / `.ac3` / `.eac3` / `.flac` / `.aac` / `.m4a` / `.opus`) and subs (`.srt` / `.ass` / `.ssa` / `.vtt`), groups by parent folder = label, infers language from path, detects "forced" subs by token.
- Burn-in for cluster-extras subs is end-to-end: auto-included for the mux, language carried through, post-mux re-probe rewrites burn-in index to the embedded stream.
- OpenSubtitles auto-fetch — analyze pulls missing-language SRTs via moviehash / TMDb id, includes them in the next run.
- Burn-in for text, sidecar SRT, and bitmap (PGS / VOBSUB via `filter_complex overlay`). Bitmap canvas sized per codec; downscale applied after overlay so glyphs scale with the picture.
- Streaming registration, mid-sync disk watchdog, parallel analyze, duplicate skip against the device's `MediaLibrary.sqlitedb`.
- Cluster-scoped selection — audio / sub / resolution / burn-in changes raise an "Apply to all N episodes?" popover (auto-dismiss 5 s); "Always" toggle silences it.
- Help menu — bug report + diagnostic info: app version, OS, device, debug log tail into a pre-filled GitHub issue.
- Sign-and-notarize pipeline — Developer ID signed, notarized, stapled DMG. First public DMG shipping from porter.md.
- Cancel + Retry per row reaches every in-flight ffmpeg (mux pass, ass→srt, main transcode). Zombie ffmpeg sweep at launch.
- Two-artwork TV sync (show portrait + episode still). Multi-device support with override persistence. CLI `pull` command.
- Corrected the iPad audio-language-switcher rule: AAC and EAC-3 are listable, AC-3 is silently filtered. AC-3 → AAC; AAC + EAC-3 pass through bit-perfect (typical `ac3 + eac3` releases keep 5.1 EAC-3 untouched).
- Exactly one default audio track enforced at ffmpeg invocation (`-disposition:a:0 default` + `-disposition:a:N 0`), regardless of source — multiple defaults kill the switcher entirely.
- Mixed-codec files no longer force-remux: per-stream codec decisions are authoritative. `aac + eac3` flavors copy through.
- Full experimental matrix at `research/docs/AUDIO_SWITCHER_RULE.md` (11 variants A–K).