Migración completa a librería Reggaeton

Cambios realizados:
- server.py: actualiza PROJECT_SAMPLES_DIR a reggaeton
- sample_manager.py: cambia base_dir a reggaeton + agrega género reggaeton
- health_check.py: actualiza paths a reggaeton
- scan_audio.py: actualiza path a reggaeton
- segment_rag_builder.py: actualiza default library a reggaeton
- reference_stem_builder.py: actualiza PROJECT_SAMPLES_DIR a reggaeton
- song_generator.py: agrega GENRE_CONFIG y SECTION_BLUEPRINT para reggaeton
- rebuild_index.py: actualiza para apuntar a reggaeton

Nueva estructura soportada:
- 1. MIDI CHORDS / 2. MIDI ARP (MIDI files)
- 3. ONE SHOTS / 4. DRUM LOOPS
- 5. FX / 6. IMPACT INTRO / 7. FILL
- 8. KICKS / 9. SNARE / 10. PERCS
- 11. VOCALS
- reggaeton 2/ (bass, drumloops, fx, kick, oneshots, perc, snare)
- SentimientoLatino2025/ (drums, vocals, loops, one shots)

Index rebuilt: 508 samples

AbletonMCP_AI/MCP_Server/reference_stem_builder.py

@@ -33,7 +33,7 @@ PORT = 9877
 MESSAGE_TERMINATOR = b"\n"
 SCRIPT_DIR = Path(__file__).resolve().parent
 PACKAGE_DIR = SCRIPT_DIR.parent
-PROJECT_SAMPLES_DIR = PACKAGE_DIR.parent / "librerias" / "organized_samples"
+PROJECT_SAMPLES_DIR = PACKAGE_DIR.parent / "librerias" / "reggaeton"
 SAMPLES_DIR = str(PROJECT_SAMPLES_DIR)
 
 TRACK_LAYOUT = (