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/rebuild_index.py

@@ -0,0 +1,53 @@
+"""
+rebuild_index.py - Reconstruir índice de embeddings para organized_samples
+"""
+import sys
+import logging
+from pathlib import Path
+
+logging.basicConfig(level=logging.INFO, format='%(levelname)s: %(message)s')
+logger = logging.getLogger(__name__)
+
+# Add MCP_Server to path
+sys.path.insert(0, str(Path(__file__).parent / "MCP_Server"))
+
+from vector_manager import VectorManager
+
+def rebuild_index():
+    # Ruta correcta - organized_samples está en el root de MIDI Remote Scripts
+    library_path = Path("C:/ProgramData/Ableton/Live 12 Suite/Resources/MIDI Remote Scripts/librerias/organized_samples")
+
+    logger.info(f"Reconstruyendo indice para: {library_path}")
+    logger.info(f"La ruta existe: {library_path.exists()}")
+
+    if library_path.exists():
+        # Listar subcarpetas con archivos
+        total_wav = 0
+        for subdir in library_path.rglob("*"):
+            if subdir.is_dir():
+                wav_files = list(subdir.glob("*.wav"))
+                if wav_files:
+                    logger.info(f"  {subdir.relative_to(library_path)}: {len(wav_files)} archivos .wav")
+                    total_wav += len(wav_files)
+        logger.info(f"Total: {total_wav} archivos .wav")
+
+    logger.info("=" * 60)
+
+    # Eliminar índice existente si hay
+    index_file = library_path / ".sample_embeddings.json"
+    if index_file.exists():
+        logger.info(f"Eliminando indice antiguo: {index_file}")
+        index_file.unlink()
+
+    # Crear nuevo VectorManager (auto-rebuild)
+    vm = VectorManager(str(library_path), skip_audio_analysis=False)
+
+    logger.info("=" * 60)
+    logger.info(f"Indice reconstruido con {len(vm.metadata)} samples")
+    logger.info(f"Archivo: {index_file}")
+
+    return len(vm.metadata)
+
+if __name__ == "__main__":
+    count = rebuild_index()
+    print(f"\nIndice listo: {count} samples")