Major redesign of the config page:
Layout:
- Sidebar navigation with section list
- Search input to filter settings
- Section cards with icons and descriptions
- Responsive design for mobile (stacked layout)
Fields:
- New toggle switches for booleans (replaces checkboxes)
- Improved field-row layout with label, help text, and control
- Better fieldset and array styling
Features:
- Diff view showing pending changes before save
- Original value tracking for comparison
- Section filtering via sidebar nav
- Search across setting names, descriptions, and nested properties
Styling:
- Dedicated config.css with all new styles
- Dark and light theme support
- Smooth animations and transitions
- Mobile-first responsive breakpoints
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