- Replace emoji icons (📄, 📝, 🌐, 📃, ✏️) in export modal with proper SVG icons
- Update CSS variables to use sentient bridge variables with fallbacks
- Fix docs-main flexbox layout to display canvas and chat panel side by side
- Add parent container overrides to prevent black strips from dark themes
- Fix chat panel width constraints and collapsed state transitions
- Update responsive breakpoints to use --header-height variable
- Add !important overrides on backgrounds to ensure proper light theme
