- Add standalone text line items to focus (quick-add with optional domain)
- Edit page for standalone items (title, domain, project)
- Convert standalone items to task, note, link, or list item
- Focus tab on project detail page showing assigned focus items
- Sort domain groups: General first, then by domain sort_order
- Add domain_id and title to nullable_fields in BaseRepository
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>