feat: Notifications page, Sidebar layout fixes, and Achievements enhancements

- implemented /notifications page with overdue/upcoming alerts
- Fixed sidebar scrolling in collapsed mode
- Moved notification button to sidebar footer
- Enhanced Achievements page with streak stats and tooltips
- Improved XP history to show task titles
- Added missing translations (en/de)
- Removed top bar header
- Fixed Docker environment routing

client/src/pages/FocusRoutinePage.tsx

@@ -12,6 +12,7 @@ import { apiRequest } from "@/lib/queryClient";
 import { useToast } from "@/hooks/use-toast";
 import { format } from "date-fns";
 import { useState } from "react";
+import { triggerConfetti } from "@/lib/confetti";
 
 export default function FocusRoutinePage() {
     const [match, params] = useRoute("/focus/routine/:type");
@@ -174,5 +175,4 @@ function getPriorityColor(priority: string) {
     return 'bg-blue-500';
 }
 
-// Temporary import fix if confetti not available in module scope
-import { triggerConfetti } from "@/lib/confetti";
+// End of file