feat(profile): 在个人资料页面显示免费AI使用次数

app/(tabs)/personal.tsx

@@ -215,6 +215,14 @@ export default function PersonalScreen() {
           {userProfile.memberNumber && (
             <Text style={styles.userMemberNumber}>会员编号: {userProfile.memberNumber}</Text>
           )}
+          {userProfile.freeUsageCount !== undefined && (
+            <View style={styles.aiUsageContainer}>
+              <Ionicons name="sparkles-outline" size={12} color="#9370DB" />
+              <Text style={styles.aiUsageText}>
+                免费AI次数: {userProfile.isVip ? '无限' : userProfile.freeUsageCount}
+              </Text>
+            </View>
+          )}
         </View>
         {isLgAvaliable ? (
           <TouchableOpacity onPress={() => pushIfAuthedElseLogin('/profile/edit')}>
@@ -501,6 +509,17 @@ const styles = StyleSheet.create({
     color: '#6C757D',
     marginTop: 4,
   },
+  aiUsageContainer: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    marginTop: 4,
+  },
+  aiUsageText: {
+    fontSize: 10,
+    color: '#9370DB',
+    marginLeft: 2,
+    fontWeight: '500',
+  },
   editButton: {
     backgroundColor: '#9370DB',
     paddingHorizontal: 16,