Add editable transcription workflow and Supabase save

Fix mic upload: record WAV; light Arabic UI without emojis

Fix Whisper short-audio error: pad clips to 30s mel window

Add audio upload: Whisper ASR + diacritization pipeline

Use text branch for text-only inference on text+ASR models

Fix text-only inference for text+ASR Diac models

Fix PyTorch 2.6 checkpoint loading for Diac Lightning models

Add Diac API backend, Arabic RTL frontend, Docker, and docs