Add chip detection system for NTAG, DESFire, ISO 15693, and JavaCard

Implement comprehensive NFC chip identification using platform-specific
commands and heuristics:

- NTAG/Ultralight detection via GET_VERSION command
- DESFire EV1/EV2/EV3 and NTAG 424 DNA detection
- ISO 15693 detection with memory-based SLIX/ICODE DNA differentiation
- JavaCard/JCOP detection via CPLC data
- MIFARE Classic detection via SAK values

Use block count as authoritative source for NXP ISO 15693 chips since
IC reference values overlap between SLIX and ICODE DNA families.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/screens/ScanScreen.tsx

@@ -10,6 +10,7 @@ export function ScanScreen({navigation}: ScanScreenProps) {
   const {
     state,
     tag,
+    transponder,
     error,
     nfcStatus,
     startScan,
@@ -17,7 +18,7 @@ export function ScanScreen({navigation}: ScanScreenProps) {
     openSettings,
   } = useScan();
 
-  // Navigate to results when scan succeeds
+  // Navigate to results when scan succeeds (detection happens in the hook)
   useEffect(() => {
     if (state === 'success' && tag) {
       navigation.replace('Result', {
@@ -29,9 +30,10 @@ export function ScanScreen({navigation}: ScanScreenProps) {
           ats: tag.ats,
           historicalBytes: tag.historicalBytes,
         },
+        transponder: transponder ?? undefined,
       });
     }
-  }, [state, tag, navigation]);
+  }, [state, tag, transponder, navigation]);
 
   // Auto-start scan when screen loads
   useEffect(() => {
@@ -185,7 +187,10 @@ export function ScanScreen({navigation}: ScanScreenProps) {
               style={styles.processingSpinner}
             />
             <Text variant="headlineMedium" style={styles.processingText}>
-              PROCESSING
+              IDENTIFYING
+            </Text>
+            <Text variant="bodyMedium" style={styles.detectingHint}>
+              Analyzing chip type...
             </Text>
           </>
         )}
@@ -297,6 +302,11 @@ const styles = StyleSheet.create({
     color: DTColors.modeEmphasis,
     letterSpacing: 4,
   },
+  detectingHint: {
+    color: DTColors.light,
+    opacity: 0.7,
+    marginTop: 12,
+  },
   footer: {
     alignItems: 'center',
     paddingBottom: 20,