Fix bugs from code review (state flow, idle timer, logger, kiosk, temp files)

src/screens/AdminScreen.tsx

@@ -217,6 +217,22 @@ export default function AdminScreen({ currentSettings, onSave, onClose }: AdminS
     </View>
   );
 
+  const handleClose = () => {
+    // If user exits without saving, revert Kiosk Mode to match saved settings
+    if (kioskActive !== currentSettings.kioskModeEnabled) {
+      try {
+        if (currentSettings.kioskModeEnabled) {
+          KioskMode.startKiosk();
+        } else {
+          KioskMode.stopKiosk();
+        }
+      } catch (e) {
+        console.warn('Failed to revert Kiosk mode:', e);
+      }
+    }
+    onClose();
+  };
+
   return (
     <Animated.View entering={FadeIn.duration(400)} exiting={FadeOut.duration(300)} style={styles.container}>
       <View style={styles.headerRow}>
@@ -224,7 +240,7 @@ export default function AdminScreen({ currentSettings, onSave, onClose }: AdminS
           <FontAwesomeIcon icon={faUserGear} size={22} color={THEME.colors.accent} />
           <Text style={styles.title}>EINSTELLUNGEN</Text>
         </View>
-        <TouchableOpacity style={styles.closeBtn} onPress={onClose}>
+        <TouchableOpacity style={styles.closeBtn} onPress={handleClose}>
           <FontAwesomeIcon icon={faArrowLeft} size={14} color={THEME.colors.text} />
           <Text style={styles.closeBtnText}>Zurück zur Fotobox</Text>
         </TouchableOpacity>
@@ -523,7 +539,7 @@ export default function AdminScreen({ currentSettings, onSave, onClose }: AdminS
                 <Text style={{ color: '#fff', fontWeight: 'bold' }}>Schließen</Text>
               </TouchableOpacity>
               <TouchableOpacity
-                style={{ backgroundColor: THEME.colors.danger, padding: 15, borderRadius: 8, flex: 0.48, alignItems: 'center' }}
+                style={{ backgroundColor: THEME.colors.error, padding: 15, borderRadius: 8, flex: 0.48, alignItems: 'center' }}
                 onPress={async () => { await logger.clearLogs(); setLogs(await logger.readLogs()); }}
               >
                 <Text style={{ color: '#fff', fontWeight: 'bold' }}>Leeren</Text>