feat: update app configuration and enhance UI components

components/NfcScanModal.tsx

@@ -1,7 +1,7 @@
 import React, { useEffect, useRef } from 'react';
 import { Modal, Text, TouchableOpacity, View, Animated, Easing, Vibration, Alert } from 'react-native';
 import { X, Radio, SmartphoneNfc } from 'lucide-react-native';
-import NfcManager, { NfcTech } from 'react-native-nfc-manager';
+import NfcManager, { Ndef, NfcTech } from 'react-native-nfc-manager';
 
 interface NfcScanModalProps {
     visible: boolean;
@@ -31,9 +31,16 @@ export default function NfcScanModal({ visible, onClose, onScan }: NfcScanModalP
             const tag = await NfcManager.getTag();
 
             if (tag) {
-                console.log('NFC Tag Found:', tag);
+                const record = tag.ndefMessage?.[0];
+                const payloadBytes = new Uint8Array(record.payload);
+                const text = Ndef.text.decodePayload(payloadBytes);
+                console.log('NFC text:', text || 'No NDEF payload');
                 Vibration.vibrate();
-                // onScan(tag.id || JSON.stringify(tag));
+                if (!text) {
+                    Alert.alert('Errore', 'Tag NFC non contiene dati validi.');
+                    throw new Error('Empty NFC tag');
+                }
+                onScan(text);
                 onClose();
             } else {
                 console.warn('Tag NFC vuoto o non formattato NDEF');