feat: add migrations, test scripts, and utility tools

- Add database migrations (006-028) for face recognition, identity, file_uuid
- Add test scripts for ASR, face, search, processing
- Add portal frontend (Tauri)
- Add config, benchmark, and monitoring utilities
- Add model checkpoints and pretrained model references

check_whisper.py

@@ -0,0 +1,7 @@
+#!/opt/homebrew/bin/python3.11
+try:
+    import whisper
+
+    print("whisper available")
+except ImportError as e:
+    print(f"whisper not available: {e}")