Added interactive active segment highlighting to the customer segments pie chart and improved the monthly revenue/orders chart with gradient areas and labeled axes. Replaced loading spinners with ChartSkeleton components for a more consistent loading state. Refactored SkeletonLoaders to accept className and improved code style.
Replaces imports from 'components/ui' with 'components/common' across the app and dashboard pages, and updates model and API imports to use new paths under 'lib'. Removes redundant authentication checks from several dashboard pages. Adds new dashboard components and utility files, and reorganizes hooks and services into the 'lib' directory for improved structure.
