Storage: IndexedDB ('reh-library' DB, 'rehearsals' store).
Blobs (recorded mic audio) stored natively; no base64 overhead.
Library panel (Phase 1):
- List of saved rehearsals sorted by last update
- Each row: character-colour avatars, title, progress bar,
line count, recorded-clip count, date
- Active record highlighted in accent colour
- Open / Export .reh / Delete per-row buttons
- Import .reh button at the top
Transport bar (Phase 3):
- Save button (updates existing record if savedId set, else creates new)
- Export button (downloads current state as .reh JSON file)
Phase 4 (session complete):
- Save to library and Export .reh buttons
Data format (.reh file):
- JSON with version=1, title, script text, cast map, backend, lineIndex
- clips serialized with audio as base64 strings (mime + b64 fields)
- clipsFromJson restores Blob objects on import
Behaviour:
- Parsing a brand-new script resets savedId → safe to save as new record
- loadRecord() restores script, cast, lineIndex, clips and jumps to Phase 2
- renderLibraryList() called on init, after save, after delete, after import
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>