Fix: Actualizar rutas de all_tracks a organized_samples

- segment_rag_builder.py: cambia default library a organized_samples
- scan_audio.py: actualiza path a organized_samples
- rebuild_index.py: script utilitario para reconstruir embeddings

Refs: transicion a organized_samples con bucket sampling

AbletonMCP_AI/MCP_Server/scan_audio.py

@@ -2,7 +2,7 @@ import sample_manager
 
 print('Iniciando escaneo de la libreria de samples con analyze_audio=True...')
 try:
-    path = r'C:\Users\ren\embeddings\all_tracks'
+    path = r'C:\ProgramData\Ableton\Live 12 Suite\Resources\MIDI Remote Scripts\AbletonMCP_AI\librerias\organized_samples'
     stats = sample_manager.scan_samples(path, analyze_audio=True)
     p = stats.get('processed', 0)
     a = stats.get('added', 0)

AbletonMCP_AI/MCP_Server/segment_rag_builder.py

@@ -16,7 +16,7 @@ logger = logging.getLogger(__name__)
 
 
 def _default_library_dir() -> Path:
-    return Path(__file__).resolve().parents[2] / "librerias" / "all_tracks"
+    return Path(__file__).resolve().parents[2] / "librerias" / "organized_samples"
 
 
 def main() -> int: