Update default texts, admin UI improvements, Kiosk Mode prep, and fix image gallery saving

src/screens/AdminScreen.tsx

@@ -11,6 +11,7 @@ import {
   Modal,
   BackHandler,
   PanResponder,
+  Linking,
 } from 'react-native';
 import { LinearGradient } from 'expo-linear-gradient';
 import Animated, { FadeIn, FadeOut } from 'react-native-reanimated';
@@ -347,7 +348,7 @@ export default function AdminScreen({ currentSettings, onSave, onClose }: AdminS
             <Text style={styles.label}>Begrüßungstext</Text>
             <TextInput
               style={styles.input}
-              placeholder="Willkommen zu unserer Feier!"
+              placeholder="Zeit für ein Erinnerungsfoto!"
               placeholderTextColor={THEME.colors.textMuted}
               value={welcomeText}
               onChangeText={setWelcomeText}
@@ -357,7 +358,7 @@ export default function AdminScreen({ currentSettings, onSave, onClose }: AdminS
             <Text style={styles.label}>Subtext (Footer)</Text>
             <TextInput
               style={styles.input}
-              placeholder="ZUM STARTEN TIPPEN..."
+              placeholder="👆 Display tippen! • 😊 Lächeln! • 📸 Foto schnappen!"
               placeholderTextColor={THEME.colors.textMuted}
               value={footerText}
               onChangeText={setFooterText}
@@ -367,7 +368,7 @@ export default function AdminScreen({ currentSettings, onSave, onClose }: AdminS
             <Text style={styles.label}>Event-Name (wird auch im Datum-Sticker & Collage verwendet)</Text>
             <TextInput
               style={styles.input}
-              placeholder="z.B. Jannik's Party"
+              placeholder="Schnappix-Party"
               placeholderTextColor={THEME.colors.textMuted}
               value={eventText}
               onChangeText={setEventText}
@@ -662,7 +663,10 @@ export default function AdminScreen({ currentSettings, onSave, onClose }: AdminS
         </TouchableOpacity>
 
         <View style={{ alignItems: 'center', marginTop: 20, marginBottom: 40 }}>
-          <Text style={{ color: '#555', fontSize: 14 }}>App Version {appConfig.expo.version}</Text>
+          <Text style={{ color: '#555', fontSize: 14, marginBottom: 10 }}>App Version {appConfig.expo.version}</Text>
+          <TouchableOpacity onPress={() => Linking.openURL('https://schnappix.orfel.de')}>
+            <Text style={{ color: THEME.colors.accent, fontSize: 16, textDecorationLine: 'underline' }}>schnappix.orfel.de</Text>
+          </TouchableOpacity>
         </View>
       </ScrollView>