- [x] 1. Add OpenSpec scenario for screenshot OCR attendee additions.
- [x] 2. Add failing behavior tests for OCR attendee parsing and meeting-note updates.
- [x] 3. Parse `attendees` from screenshot OCR metadata.
- [x] 4. Merge OCR attendees into the meeting note through alias-aware canonicalization.
- [x] 5. Run focused tests and `openspec validate add-screenshot-ocr-attendees --strict`.