fix：优化和对齐版本

lib/common/network/auth_interceptor.dart

@@ -1,16 +1,19 @@
 import 'package:dio/dio.dart';
-import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+
 import '../services/device_header_service.dart';
+import '../storage/secure_identity_storage.dart';
 
-const _kJwtKey = 'jwt_token';
-const _storage = FlutterSecureStorage();
+final _defaultIdentityStorage = SecureIdentityStorage();
 
-Future<void> saveJwt(String token) =>
-    _storage.write(key: _kJwtKey, value: token);
-Future<void> clearJwt() => _storage.delete(key: _kJwtKey);
-Future<String?> loadJwt() => _storage.read(key: _kJwtKey);
+Future<void> saveJwt(String token) => _defaultIdentityStorage.saveJwt(token);
+Future<void> clearJwt() => _defaultIdentityStorage.clearJwt();
+Future<String?> loadJwt() => _defaultIdentityStorage.readJwt();
 
 class AuthInterceptor extends Interceptor {
+  AuthInterceptor(this._identityStorage);
+
+  final SecureIdentityStorage _identityStorage;
+
   @override
   Future<void> onRequest(
     RequestOptions options,
@@ -19,7 +22,7 @@ class AuthInterceptor extends Interceptor {
     await DeviceHeaderService.to.ensureInitialized();
     options.headers.addAll(DeviceHeaderService.to.commonHeaders());
     options.headers.addAll(DeviceHeaderService.to.platformIdentityHeaders());
-    final jwt = await loadJwt();
+    final jwt = await _identityStorage.readJwt();
     if (jwt != null && jwt.isNotEmpty) {
       options.headers['Authorization'] = 'Bearer $jwt';
     }