Initial commit - SoundWave v1.0

- Full PWA support with offline capabilities
- Comprehensive search across songs, playlists, and channels
- Offline playlist manager with download tracking
- Pre-built frontend for zero-build deployment
- Docker-based deployment with docker compose
- Material-UI dark theme interface
- YouTube audio download and management
- Multi-user authentication support

frontend/public/avatars/preset_4.svg

@@ -0,0 +1,12 @@
+<svg width="200" height="200" viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg">
+  <!-- Background circle -->
+  <circle cx="100" cy="100" r="100" fill="#F59E0B"/>
+  
+  <!-- Vinyl record -->
+  <g>
+    <circle cx="100" cy="100" r="60" fill="white"/>
+    <circle cx="100" cy="100" r="50" fill="#1F2937"/>
+    <circle cx="100" cy="100" r="15" fill="white"/>
+    <circle cx="100" cy="100" r="8" fill="#1F2937"/>
+  </g>
+</svg>