Replace print statements with logging in transcription.py

[filthyrake]

Summary

The worker/transcription.py file uses 27+ print() statements instead of Python's logging module.

Current Behavior

print(f"Loading Whisper model: {WHISPER_MODEL}...")
print("Model loaded successfully")
print(f"  Transcribing: {audio_path.name}")

Expected Behavior

logger.info(f"Loading Whisper model: {WHISPER_MODEL}...")
logger.info("Model loaded successfully")
logger.debug(f"Transcribing: {audio_path.name}")

Files to Modify

• worker/transcription.py (~27 print statements)

Implementation Steps

1. Add import logging and create a module logger: logger = logging.getLogger(__name__)
2. Replace all print() calls with appropriate log levels
3. Run tests: pytest tests/test_transcription*.py

Acceptance Criteria

• No print() statements remain in the file
• All logging uses appropriate log levels
• Existing tests pass