- Stream pipeline progress to frontend via Tauri events so the progress overlay updates in real time during transcription/diarization - Gracefully fall back to transcription-only when diarization fails (e.g. pyannote not installed) instead of erroring the whole pipeline - Add color-scheme: dark to fix native select/option elements rendering with unreadable white backgrounds Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>