feat: Dashboard redesign, plan permissions, and help docs improvements

Major updates including:
- Customizable dashboard with drag-and-drop widget grid layout
- Plan-based feature locking for plugins and tasks
- Comprehensive help documentation updates across all pages
- Plugin seeding in deployment process for all tenants
- Permission synchronization system for subscription plans
- QuotaOverageModal component and enhanced UX flows

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

frontend/src/layouts/BusinessLayout.tsx

@@ -52,7 +52,7 @@ const BusinessLayoutContent: React.FC<BusinessLayoutProps> = ({ business, user,
   const [searchParams] = useSearchParams();
   const navigate = useNavigate();
 
-  useScrollToTop();
+  useScrollToTop(mainContentRef);
 
   // Fetch ticket data when modal is opened from notification
   const { data: ticketFromNotification } = useTicket(ticketModalId || undefined);