SENIOR ARCHITECTURE - FIX SUGGESTIONS
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Metadata Store:

Fix: If metadata store fails:
  1. Check database schema in metadata_store.py
  2. Verify SampleFeatures dataclass definition
  3. Check for SQL syntax errors in init_database()
  4. Ensure proper error handling in save/get methods

ArrangementRecorder:

Fix: If ArrangementRecorder fails:
  1. Check RecordingState enum definition
  2. Verify RecordingConfig dataclass
  3. Ensure proper mock objects for testing
  4. Check state transition logic