feat: add support section to README, implement donation modal, and enhance routing with new dashboard and not found pages. Update sitemap for improved SEO and adjust navigation links to point to the dashboard. Introduce new package card component for better package management and enhance error handling in various components.

feat: update accessibility guidelines and enhance component structure. Introduce new frontend accessibility conventions in AGENTS.md, including heading hierarchy and ARIA roles for dialogs and buttons. Refactor TourGuide and related components for lazy loading and improved user experience. Update ESLint configuration to enforce stricter TypeScript rules and add new dependencies for linting. Enhance various components with accessibility features and ensure consistent styling across the application.

feat: implement admin panel with multiple routes for user management, credits, jobs, and content moderation. Add admin dashboard for platform overview and integrate visibility controls for featured content. Enhance sidebar navigation for admin access and ensure proper session handling for admin users.