KI-AGENT: Terminpicker und Dokumentaufruf verbessert

mobile/app/project/[id].tsx

@@ -34,6 +34,7 @@ import {
   updateTask,
 } from '@/src/lib/api';
 import { useAuth } from '@/src/providers/auth-provider';
+import { getOpenableFileUrl } from '@/src/lib/file-opening';
 
 const PRIMARY = '#69c350';
 const TASK_STATUS_ORDER: TaskStatus[] = ['Offen', 'In Bearbeitung', 'Abgeschlossen'];
@@ -193,7 +194,7 @@ export default function ProjectDetailScreen() {
 
   async function onOpenFile(file: ProjectFile) {
     if (!file.url) return;
-    await WebBrowser.openBrowserAsync(file.url, {
+    await WebBrowser.openBrowserAsync(getOpenableFileUrl(file.url), {
       presentationStyle: WebBrowser.WebBrowserPresentationStyle.FORM_SHEET,
       controlsColor: PRIMARY,
       showTitle: true,