The DM iframe reloads on every modal open. During the show transition
the viewport is 0x0, causing clampFabPosition to push buttons to the
top-left corner. Now polls until viewport is valid before restoring.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add Settings quick-access button to both main chat and DM views
- Make FAB container draggable via toggle button with position saved to localStorage
- Add button size and spacing sliders in Settings > Appearance tab
- Use CSS custom properties for dynamic FAB sizing
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>