Major feature update: Enhanced RSS, voice fixes, dark mode, and UI improvements

## New Features
- Article Summary Mode: AI-generated 30-second summaries with complexity analysis
- Reading Stats Dashboard: Track articles read, listening time, and streaks
- Bookmark/Resume: Auto-save progress when pausing, resume from where you left off
- Audio Export: Export articles as downloadable WAV files
- RSS Feed Manager: Subscribe to feeds with real-time validation and 31+ recommendations
- Smart Speed: Auto-adjust playback based on article complexity
- Voice Moods: Quick presets for different listening scenarios

## RSS Enhancements
- Expanded recommendations from 8 to 31 sources across 5 categories:
  * General News (9 sources)
  * Technology (8 sources)
  * Business & Finance (5 sources)
  * Science & Research (5 sources)
  * International News (4 sources)
- Real-time URL validation with visual feedback
- Detailed error messages for different failure scenarios
- Always-visible categorized recommendations
- Auto-loading articles when feeds are added

## Bug Fixes
- Fixed voice selection: Selected voice now consistently applies to playback
- Implemented voice generation counter to prevent voice mixing between paragraphs
- Fixed speed control to snap to clean 0.5 increments (1.0, 1.5, 2.0, etc.)
- Fixed dark mode toggle by configuring Tailwind CDN for class-based dark mode
- Removed vibe visualizer animation

## UI/UX Improvements
- Redesigned voice selector with prominent voice panel and preview functionality
- Added voice cards with emojis and descriptions
- Enhanced feature toolbar with quick access to all new features
- Improved reader view with better typography and reading modes
- Added ambient reading modes (clean, sepia, night light)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

index.html

@@ -5,6 +5,11 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>NewsCaster AI</title>
     <script src="https://cdn.tailwindcss.com"></script>
+    <script>
+      tailwind.config = {
+        darkMode: 'class'
+      }
+    </script>
     <link href="https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap" rel="stylesheet">
     <style>
       body { font-family: 'Inter', sans-serif; }