Add transcription and alignment pipeline

New commands:
- `transcribe`: Uses Whisper to generate word-level timestamps from video
- `align`: Matches manuscript markers to transcript, outputs transcript.csv

Workflow:
1. gnommo transcribe video.mov → video.transcript.json
2. gnommo align project/ → transcript.csv with markers at aligned times

Alignment uses fuzzy text matching to find the first phrase after each
marker in the manuscript, then locates it in the transcript. Applies
configurable offset (default -1s) so slides appear before speech.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.gitignore

@@ -8,6 +8,7 @@ venv/
 .venv/
 *.egg-info/
 
+Video1/*
 # OS
 .DS_Store
 Thumbs.db