- Added toast notification system for visible feedback
- Implemented settings persistence via localStorage
- Added auto-crossfade logic (smooth 5s transition)
- Removed ~100 lines of dead SERVER_SIDE_AUDIO code
- Fixed seekTo speed bug by capturing current playbackRate
- Debounced drawWaveform with requestAnimationFrame
- Added 'SETTINGS' header and close button to settings panel
- Wired loadFromServer errors to toast notifications
- Stacked control buttons vertically to clear crossfader
- Removed all emojis from UI (replaced with text labels)
- Converted all American English to British English (initialise, optimise, visualiser)
- Fixed mobile queue section visibility in portrait/landscape modes
- Added proper CSS rules for show-queue-A and show-queue-B classes
- Repositioned floating action buttons to prevent overlap with mobile tabs
- Added responsive button sizing for mobile (50px) and small screens (45px)
- Stacked buttons vertically on screens ≤480px
- Disabled all body::before border effects that were blocking UI
- Fixed crossfader width: 70% in portrait, 100% in landscape
- Removed unnecessary .md files (COMPARISON.md, PYQT5_FEATURES.md, QUICKSTART.md, README_PYQT5.md)
- Updated README.md with British English and removed emojis
- Server-side: Added remote URL support in ffmpeg transcoder
- UI: Added relay controls in streaming panel with URL input
- Client: Added start/stop relay functions with socket communication
- Listener: Shows remote relay status in stream indicator