fix: star visibility, station switching, skip-ahead, and latency optimizations

- Star icons now use distinct tint colors (primary vs faded) for clear state
- Station switching no longer races — old playback job is cancelled before new
- Skip-ahead drops ~1s of buffered audio per tap via atomic counter
- Custom SocketFactory with SO_RCVBUF=16KB and TCP_NODELAY for minimal TCP buffering
- Catch-up drain: discards pre-buffered frames until network reads block (live edge)
- AudioTrack PERFORMANCE_MODE_LOW_LATENCY for smallest hardware buffer

Made-with: Cursor

chat-summaries/2026-03-09_bugfix-and-seek-to-live.md

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+# Bugfix: Star icons, station switching, and seek-to-live
+
+**Date:** 2026-03-09
+
+## Task description
+Fixed three issues found during manual testing of the app.
+
+## Changes made
+
+### 1. Star icon visual state (StationListScreen.kt)
+- Added explicit tint colors to star icons: `primary` color when starred, faded `onSurfaceVariant` (40% alpha) when unstarred.
+- Applies to both station rows and playlist section headers.
+
+### 2. Station switching race condition (RadioPlaybackService.kt)
+- Added `playJob` tracking — each new play request cancels the previous playback coroutine before starting a new one.
+- The old job's `finally` block now checks `playJob == coroutineContext[Job]` to avoid calling `cleanup()`/`stopSelf()` when being replaced by a new station.
+- Tapping the same station now restarts it (re-fires `ACTION_PLAY`).
+- Fixed collector coroutine leak: `return@collect` on terminal events (`Error`, `Stopped`) so the SharedFlow collection terminates.
+
+### 3. Seek-to-live feature
+- Added `ACTION_SEEK_LIVE` to `RadioPlaybackService` — ends current connection span, stops/restarts the engine for the current station without creating a new `ListeningSession`.
+- Added `seekToLive()` to `RadioController`.
+- Added `seekToLive()` to `NowPlayingViewModel`.
+- Added "SKIP TO LIVE" `FilledTonalButton` to `NowPlayingScreen`, positioned between latency indicator and Stay Connected toggle. Disabled during reconnection.
+
+## Files changed
+- `app/src/main/java/.../ui/screens/stationlist/StationListScreen.kt`
+- `app/src/main/java/.../service/RadioPlaybackService.kt`
+- `app/src/main/java/.../service/RadioController.kt`
+- `app/src/main/java/.../ui/screens/nowplaying/NowPlayingScreen.kt`
+- `app/src/main/java/.../ui/screens/nowplaying/NowPlayingViewModel.kt`
+
+## Follow-up items
+- None identified.

chat-summaries/2026-03-09_full-implementation-summary.md

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+# Full Implementation — Android 24/7 Radio
+
+**Date:** 2026-03-09
+
+## Task Description
+
+Brainstormed, designed, planned, and implemented a complete Android 24/7 internet radio streaming app from scratch using subagent-driven development.
+
+## What Was Built
+
+### Audio Engine (custom raw pipeline)
+- **StreamConnection** — OkHttp HTTP client with ICY metadata header support
+- **IcyParser** — Separates audio bytes from ICY metadata, parses StreamTitle into artist/title
+- **Mp3FrameSync** — Finds MP3 frame boundaries with two-frame validation and re-sync
+- **AudioEngine** — Wires pipeline: StreamConnection → IcyParser → RingBuffer → Mp3FrameSync → MediaCodec → AudioTrack
+
+### Android Service Layer
+- **RadioPlaybackService** — Foreground service with wake lock, wifi lock, MediaSession
+- **Stay Connected** — Exponential backoff reconnection (1s→30s cap), ConnectivityManager callback for instant retry
+- **NotificationHelper** — Media-style notification with stop action
+- **RadioController** — Shared state between service and UI via StateFlow
+
+### Data Layer
+- **Room Database** — Station, Playlist, MetadataSnapshot, ListeningSession, ConnectionSpan entities with full DAOs
+- **DataStore Preferences** — stayConnected, bufferMs, lastStationId
+- **PLS/M3U Import/Export** — Full parsers with #EXTIMG support, round-trip tested
+
+### UI (Jetpack Compose + Material 3)
+- **Station List** — Playlists as expandable groups, starring, tap-to-play, long-press menu, import
+- **Now Playing** — Album art, dual timers (session + connection), latency indicator, stay connected toggle, buffer slider
+- **Settings** — Playback prefs, playlist export, recently played, track history with search
+- **MiniPlayer** — Bottom bar on station list when playing
+
+### Metadata
+- **AlbumArtResolver** — MusicBrainz/Cover Art Archive → ICY StreamUrl → #EXTIMG → placeholder
+- **ArtCache** — In-memory LRU cache (500 entries)
+- **Coil 3** — Image loading in Compose
+
+## Commit History (20 commits)
+
+1. Design document and implementation plan
+2. Project scaffolding (Gradle, manifest, dependencies)
+3. Room entities, DAOs, database, DataStore
+4. M3U/PLS import/export with tests
+5. ICY metadata parser with tests
+6. MP3 frame synchronizer with tests
+7. HTTP stream connection with tests
+8. Audio engine integration
+9. Foreground service with Stay Connected
+10. Material 3 theme and navigation
+11. Station List screen
+12. Now Playing screen with dual timers
+13. Settings screen with history
+14. Album art resolution with MusicBrainz
+15. Final integration and README
+
+## Test Coverage
+
+- IcyParser: 10 tests
+- Mp3FrameSync: 9 tests
+- StreamConnection: 6 tests
+- M3uParser: 6 tests
+- PlsParser: 5 tests
+- PlaylistExporter: 4 tests
+- RingBuffer: 4 tests
+- AlbumArtResolver: 9 tests (MockWebServer)
+
+## Follow-Up Items
+
+- Test on actual Android 9 device with real Icecast/Shoutcast streams
+- Add drag-to-reorder for stations and playlists
+- Implement latency estimation from AudioTrack write/play head positions
+- Add Bluetooth headset AUDIO_BECOMING_NOISY handling
+- Add audio focus management
+- Future: recording, clips, analytics (schema already supports it)