- Add type=button to Cancel/Save buttons in editor to prevent form submission
- Add href=# and return false to quick-links to prevent default anchor behavior
- StopPropagation was already present in sidebar handlers (verified)
- Document view buttons already had type=button (verified)
These fixes ensure:
- Library/tag clicks don't bubble up and trigger wrong handlers
- Quick-link buttons don't cause unexpected navigation
- Editor buttons don't accidentally submit forms
- Vanilla JS frontend with dark theme
- Dashboard with sidebar (libraries tree, tags), document grid, search
- Document viewer with markdown rendering and metadata panel
- Document editor with split write/preview and formatting toolbar
- Login screen with token authentication
- All styled according to UI/UX specs (dark theme, accent #00d4aa)
- API client for all endpoints
- Responsive design