feat: Phase 3 AI Radio (DJ Host & interleaved playlist) and Like/Dislike/Delete actions

- Add Like button: promotes wave track to permanent library and refills buffer
- Add Dislike button: blacklists track in SQLite disliked_tracks, removes audio, refills buffer
- Add Delete button in history table for library file removal
- Add AI Radio module: wttr.in weather, Qwen 2.5 host monologues, speech synthesis, ID3 tags
- Generate interleaved 'AI Радио.m3u8' alongside clean 'Моя Волна.m3u8'
- Update Web UI with Radio DJ card, voice selection, and track actions

app/wave/collector.py

@@ -124,8 +124,16 @@ class WaveCollector:
         return profile
 
     def get_existing_track_keys(self) -> Set[str]:
-        """Returns set of normalized 'artist|title' of all songs already in Navidrome library."""
+        """Returns set of normalized 'artist|title' of all songs already in Navidrome library and disliked tracks."""
         keys: Set[str] = set()
+        
+        # Exclude disliked / blacklisted tracks
+        try:
+            from app.db import get_disliked_track_keys
+            keys.update(get_disliked_track_keys())
+        except Exception as e:
+            print(f"[WaveCollector] Warning reading disliked keys: {e}")
+
         conn = self._get_connection()
         if not conn:
             return keys