Deduplicate guest tasks list and restore header icon

resources/js/guest/pages/TaskPickerPage.tsx

@@ -21,6 +21,7 @@ import { getDeviceId } from '../lib/device';
 import { FADE_SCALE, FADE_UP, STAGGER_FAST, getMotionContainerProps, getMotionItemProps, prefersReducedMotion } from '../lib/motion';
 import PullToRefresh from '../components/PullToRefresh';
 import { triggerHaptic } from '../lib/haptics';
+import { dedupeTasksById } from '../lib/taskUtils';
 
 interface Task {
   id: number;
@@ -133,9 +134,10 @@ export default function TaskPickerPage() {
             ? payload.tasks
             : [];
 
-      const entry = { data: taskList, etag: response.headers.get('ETag') };
+      const uniqueTasks = dedupeTasksById(taskList);
+      const entry = { data: uniqueTasks, etag: response.headers.get('ETag') };
       tasksCacheRef.current.set(cacheKey, entry);
-      setTasks(taskList);
+      setTasks(uniqueTasks);
     } catch (err) {
       console.error('Failed to load tasks', err);
       setError(err instanceof Error ? err.message : 'Unbekannter Fehler');