feat(audio): move beat routing server-side and extend presets

Route beat-triggered manual selects from the controller server, add preset background and beat-counter UI support, and bump led-driver to include the matching pattern/runtime fixes.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/controllers/preset.py

@@ -315,6 +315,13 @@ async def push_driver_messages(request, session):
     except Exception:
         return json.dumps({"error": "Send failed"}), 503, {'Content-Type': 'application/json'}
 
+    try:
+        from util.beat_driver_route import sync_beat_route_from_push_sequence
+
+        sync_beat_route_from_push_sequence(seq)
+    except Exception:
+        pass
+
     return json.dumps({
         "message": "Delivered",
         "deliveries": deliveries,