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

backend/stats/serializers.py

@@ -0,0 +1,24 @@
+"""Stats serializers"""
+
+from rest_framework import serializers
+
+
+class AudioStatsSerializer(serializers.Serializer):
+    """Audio statistics"""
+    total_count = serializers.IntegerField()
+    total_duration = serializers.IntegerField(help_text="Total duration in seconds")
+    total_size = serializers.IntegerField(help_text="Total size in bytes")
+    total_plays = serializers.IntegerField()
+
+
+class ChannelStatsSerializer(serializers.Serializer):
+    """Channel statistics"""
+    total_channels = serializers.IntegerField()
+    subscribed_channels = serializers.IntegerField()
+
+
+class DownloadStatsSerializer(serializers.Serializer):
+    """Download statistics"""
+    pending = serializers.IntegerField()
+    completed = serializers.IntegerField()
+    failed = serializers.IntegerField()