Added

Added font smoothing options for MacOS users to control text rendering:
- Auto: Browser decides (uses subpixel anti-aliasing if available)
- Antialiased: Smooths fonts at pixel level, better for light text on dark backgrounds
- Subpixel: Provides sharpest text on most non-retina displays
- None: Disables font smoothing
Added comprehensive tree structure management for tabs
Added new drag and drop handlers for different grouping modes
Added improved tab preview styling with glass effect support

Fixed