Update camera screens, configuration, and build setup

src/screens/AdminScreen.tsx

@@ -9,6 +9,7 @@ import {
   Switch,
   Alert,
 } from 'react-native';
+import Animated, { FadeIn, FadeOut } from 'react-native-reanimated';
 import { THEME } from '../styles/theme';
 import KioskMode from '../../modules/kiosk-mode';
 import { AppSettings, saveSettings } from '../services/settings';
@@ -82,10 +83,16 @@ export default function AdminScreen({ currentSettings, onSave, onClose }: AdminS
       return;
     }
 
-    if (!printerIp.trim()) {
+    const ipTrimmed = printerIp.trim();
+    const ipRegex = /^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$/;
+    if (!ipTrimmed) {
       Alert.alert('Ungültige Eingabe', 'Die Drucker-IP-Adresse darf nicht leer sein.');
       return;
     }
+    if (!ipRegex.test(ipTrimmed)) {
+      Alert.alert('Ungültige Eingabe', 'Bitte gib eine gültige IP-Adresse ein (z.B. 192.168.1.100).');
+      return;
+    }
 
     if (!password.trim() || password.length < 4) {
       Alert.alert('Ungültige Eingabe', 'Das Admin-Passwort muss mindestens 4 Ziffern lang sein.');
@@ -94,7 +101,7 @@ export default function AdminScreen({ currentSettings, onSave, onClose }: AdminS
 
     const updated: AppSettings = {
       countdownDuration: duration,
-      printerIp: printerIp.trim(),
+      printerIp: ipTrimmed,
       adminPassword: password.trim(),
       kioskModeEnabled: kioskActive,
     };
@@ -109,7 +116,7 @@ export default function AdminScreen({ currentSettings, onSave, onClose }: AdminS
   };
 
   return (
-    <View style={styles.container}>
+    <Animated.View entering={FadeIn.duration(400)} exiting={FadeOut.duration(300)} style={styles.container}>
       <View style={styles.headerRow}>
         <Text style={styles.title}>SCHNAPPIX EINSTELLUNGEN</Text>
         <TouchableOpacity style={styles.closeBtn} onPress={onClose}>
@@ -207,7 +214,7 @@ export default function AdminScreen({ currentSettings, onSave, onClose }: AdminS
           <Text style={styles.saveBtnText}>EINSTELLUNGEN SPEICHERN</Text>
         </TouchableOpacity>
       </ScrollView>
-    </View>
+    </Animated.View>
   );
 }