feat(notifications): add per-tenant notification preferences

mobile/app/more/settings.tsx

@@ -15,6 +15,8 @@ import {
 } from '@/src/lib/server-config';
 import { useAuth } from '@/src/providers/auth-provider';
 
+import { NotificationPreferences } from '@/src/components/NotificationPreferences';
+
 const PRIMARY = '#69c350';
 
 function isValidServerUrl(value: string): boolean {
@@ -153,6 +155,7 @@ export default function SettingsScreen() {
 
   return (
     <ScrollView contentContainerStyle={styles.container}>
+      {token && <NotificationPreferences key={String(activeTenantId)} token={token} />}
       <View style={styles.card}>
         <Text style={styles.title}>Server-Instanz</Text>
         <Text style={styles.hint}>