- VideoExtractor: extract PlaySource (source tabs) with episodes grouped per source
- SiteConfig: add sourceSelector and sourceEpisodeGroupSelector CSS selectors
- PlayerActivity: source tabs + episode list at bottom, auto-hide after 4s, tap to toggle
- SettingsActivity: add source selector configuration fields
- Fullscreen playback with ExoPlayer or WebView fallback
- Add BrowserActivity with WebView, toolbar (back/forward/close), URL bar, progress bar
- SearchFragment: open BrowserActivity instead of PlayerActivity on result click
- Browser allows user to browse the video site directly before choosing to play
- Replace resources.getColor(id, null) with ContextCompat.getColor() for API 21-22 compatibility
- Change android.software.leanback to required=false to allow testing on non-TV emulators
