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.
Introduces reusable error boundary and suspense timeout components across dashboard pages for better error handling and user feedback. Enhances loading skeletons with subtle progress indicators, animation, and slow-loading warnings. All dynamic imports now include error handling and improved fallback skeletons, and a shared DashboardContentWrapper is added for consistent dashboard content loading experience.
