## Changes
### Add scrollbars to provider dialogs
- **AddProviderDialog.tsx**: Add max-h-[90vh], flex flex-col layout, and scrollable content wrapper
- **EditProviderDialog.tsx**: Add max-h-[90vh], flex flex-col layout, and scrollable content wrapper
- Both dialogs now follow the same scrolling pattern as other dialogs in the app
- Wrap ProviderForm in `<div className="flex-1 overflow-y-auto -mx-6 px-6">` for proper scrolling
### Simplify theme toggle
- **mode-toggle.tsx**: Change from dropdown menu to direct toggle button
- Remove DropdownMenu and related imports
- Click now directly toggles between light and dark mode
- Simpler UX: one click to switch themes instead of opening a menu
- Remove "system" theme option from quick toggle (still available in settings if needed)
## Benefits
- **Consistent scrolling**: All dialogs now have proper scroll behavior when content exceeds viewport height
- **Better UX**: Theme toggle is faster and more intuitive with direct click
- **Code simplification**: Removed unnecessary dropdown menu complexity from theme toggle
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