feat: add WhisperX diarization and speaker transcript UI

- add WhisperX diarization support to the Whisper VM server
- normalize speaker timestamp segments from Whisper responses
- document Hugging Face/pyannote VM setup and health checks
- show diarized speaker transcript blocks in record and transcript views
- group consecutive segments from the same speaker
- remove duplicate paragraph transcript display when diarized segments exist
- let diarized transcript content expand without an inner scrollbar

scripts/orphion-whisper.service

@@ -8,9 +8,15 @@ Type=simple
 User=cezen
 Group=cezen
 WorkingDirectory=/home/cezen/whisper
+EnvironmentFile=-/home/cezen/whisper/.env
 Environment=WHISPER_MODEL=large-v3
 Environment=WHISPER_MODEL_DIR=/home/cezen/whisper/models
 Environment=WHISPER_FILE_FIELD=file
+Environment=WHISPERX_DIARIZATION=true
+Environment=WHISPERX_DEVICE=cuda
+Environment=WHISPERX_COMPUTE_TYPE=float16
+Environment=WHISPERX_BATCH_SIZE=8
+Environment=WHISPERX_DIARIZATION_MODEL=pyannote/speaker-diarization-community-1
 ExecStart=/home/cezen/whisper/venv/bin/python /home/cezen/whisper/server.py --host 0.0.0.0 --port 8000
 Restart=always
 RestartSec=5