[Master] Feature parity - fill remaining gaps #38

Summary

Master tracking issue for Android client feature parity. Android has most features but is missing a few settings.

Missing Feature Categories

1. Playback Settings UI (High)

• Add Auto-skip Recap toggle (playback.auto_skip_recap) in PlaybackSettings
• Add Auto-play Next Preview toggle (playback.auto_play_next_preview) in PlaybackSettings
• Verify Prev Episode button exists in transport cluster (PlayerControls composable)

2. Ratings (Medium)

• Rate media (1–5 stars; already present on phone + TV detail)
• Display aggregate ratings on detail screens (community rating, Show the server community rating on phone and TV title pages #42; server: prairie-server#229)

3. Watch Together - Already Implemented ✅

• Create/join rooms
• Room lobby with member list
• Suggestion voting
• Synced playback (RoomSyncEngine)
• Host controls
• Invite sharing

4. Other Features - Already Implemented ✅

• Episode Navigation & Skip Controls (intro skip mode, auto-skip credits, auto-play next)
• Personal Collections
• Library Collections
• Media Requests
• Live TV
• Calendar
• Notifications/Inbox
• Downloads/Offline
• Recommendations
• Continue Watching
• Search
• Profiles/Switching
• Markers Editing
• Sleep Timer
• Picture-in-Picture
• Audio Track Selection
• Subtitle Selection
• Quality Selection
• Chapters
• Trickplay/Seek Preview

Files to Modify

• androidApp/src/main/kotlin/org/prairieserver/prairie/android/ui/screens/settings/PlaybackSettings.kt
• androidTvApp/src/main/kotlin/org/prairieserver/prairie/tv/ui/screens/settings/TvSettingsScreen.kt
• androidApp/src/main/kotlin/org/prairieserver/prairie/android/ui/screens/player/PlayerControls.kt - verify prev episode button
• androidApp/src/main/kotlin/org/prairieserver/prairie/android/ui/screens/detail/ - add ratings UI (NEW)
• androidTvApp/src/main/kotlin/org/prairieserver/prairie/tv/ui/screens/detail/ - add ratings UI (NEW)

Reference Implementation

• Web: prairie-server/web/src/pages/TitleDetail.tsx (ratings display)
• Server: Rating API endpoints in internal/apiv2/ratings.go