jknapp bd0e84c5e7 Fix model switching crash and improve error handling ...

**Model Reload Fixes:**
- Properly disconnect signals before reconnecting to prevent duplicate connections
- Wait for previous model loader thread to finish before starting new one
- Add garbage collection after unloading model to free memory
- Improve error handling in model reload callback

**Settings Dialog:**
- Remove duplicate success message (callback handles it)
- Only show message if no callback is defined

**Transcription Engine:**
- Explicitly delete model reference before setting to None
- Force garbage collection to ensure memory is freed

This prevents crashes when switching models, especially when done
multiple times in succession or while the app is under load.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

2025-12-27 06:28:40 -08:00

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