refactor: improve auto-create API semantics and use real device ID

Frontend (account_service.dart):
- Use Android ID instead of random UUID for deviceId
- Add DeviceHardwareInfo class with full hardware details
- Remove provinceCode/cityCode from CreateAccountRequest
- Simplify to: deviceId (required), deviceName (optional JSON), inviterReferralCode (optional)

Backend (identity-service):
- Rename validateDeviceId() to checkDeviceNotRegistered() for clarity
- Rename generateNext() to generateNextUserSequence() for semantics
- Update error message: "该设备已创建过账户"

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

backend/services/.claude/settings.local.json

@@ -0,0 +1,12 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(cat:*)",
+      "Bash(git add:*)",
+      "Bash(git commit:*)",
+      "Bash(git push:*)"
+    ],
+    "deny": [],
+    "ask": []
+  }
+}

backend/services/identity-service/src/application/commands/auto-create-account/auto-create-account.handler.ts

@@ -26,8 +26,8 @@ export class AutoCreateAccountHandler {
   ) {}
 
   async execute(command: AutoCreateAccountCommand): Promise<AutoCreateAccountResult> {
-    const deviceValidation = await this.validatorService.validateDeviceId(command.deviceId);
-    if (!deviceValidation.isValid) throw new ApplicationError(deviceValidation.errorMessage!);
+    const deviceCheck = await this.validatorService.checkDeviceNotRegistered(command.deviceId);
+    if (!deviceCheck.isValid) throw new ApplicationError(deviceCheck.errorMessage!);
 
     let inviterSequence: AccountSequence | null = null;
     if (command.inviterReferralCode) {
@@ -38,7 +38,7 @@ export class AutoCreateAccountHandler {
       inviterSequence = inviter!.accountSequence;
     }
 
-    const accountSequence = await this.sequenceGenerator.generateNext();
+    const accountSequence = await this.sequenceGenerator.generateNextUserSequence();
 
     const account = UserAccount.createAutomatic({
       accountSequence,

backend/services/identity-service/src/application/services/user-application.service.ts

@@ -73,8 +73,8 @@ export class UserApplicationService {
       inviterSequence = inviter!.accountSequence;
     }
 
-    // 3. 生成账户序列号
-    const accountSequence = await this.sequenceGenerator.generateNext();
+    // 3. 生成用户序列号
+    const accountSequence = await this.sequenceGenerator.generateNextUserSequence();
 
     // 4. 创建用户账户
     const account = UserAccount.createAutomatic({
@@ -301,7 +301,7 @@ export class UserApplicationService {
       inviterSequence = inviter!.accountSequence;
     }
 
-    const accountSequence = await this.sequenceGenerator.generateNext();
+    const accountSequence = await this.sequenceGenerator.generateNextUserSequence();
 
     const account = UserAccount.create({
       accountSequence,

backend/services/identity-service/src/domain/services/account-sequence-generator.service.ts

@@ -9,7 +9,7 @@ export class AccountSequenceGeneratorService {
     private readonly repository: UserAccountRepository,
   ) {}
 
-  async generateNext(): Promise<AccountSequence> {
+  async generateNextUserSequence(): Promise<AccountSequence> {
     return this.repository.getNextAccountSequence();
   }
 }

backend/services/identity-service/src/domain/services/user-validator.service.ts

@@ -30,9 +30,9 @@ export class UserValidatorService {
     return ValidationResult.success();
   }
 
-  async validateDeviceId(deviceId: string): Promise<ValidationResult> {
+  async checkDeviceNotRegistered(deviceId: string): Promise<ValidationResult> {
     const existing = await this.repository.findByDeviceId(deviceId);
-    if (existing) return ValidationResult.failure('该设备已创建账户');
+    if (existing) return ValidationResult.failure('该设备已创建过账户');
     return ValidationResult.success();
   }
 

frontend/mobile-app/lib/core/services/account_service.dart

@@ -8,29 +8,60 @@ import '../storage/storage_keys.dart';
 import '../errors/exceptions.dart';
 import 'mpc_share_service.dart';
 
+/// 设备硬件信息 (存储在 deviceName 字段中)
+class DeviceHardwareInfo {
+  final String? brand; // 品牌 (如 "Xiaomi")
+  final String? manufacturer; // 厂商 (如 "Xiaomi")
+  final String? model; // 型号 (如 "Mi 11")
+  final String? device; // 设备名 (如 "venus")
+  final String? product; // 产品名 (如 "venus_eea")
+  final String? hardware; // 硬件名 (如 "qcom")
+  final String? osVersion; // 系统版本 (如 "13")
+  final int? sdkInt; // SDK 版本 (如 33)
+  final bool? isPhysicalDevice; // 是否真机
+
+  DeviceHardwareInfo({
+    this.brand,
+    this.manufacturer,
+    this.model,
+    this.device,
+    this.product,
+    this.hardware,
+    this.osVersion,
+    this.sdkInt,
+    this.isPhysicalDevice,
+  });
+
+  Map<String, dynamic> toJson() => {
+        if (brand != null) 'brand': brand,
+        if (manufacturer != null) 'manufacturer': manufacturer,
+        if (model != null) 'model': model,
+        if (device != null) 'device': device,
+        if (product != null) 'product': product,
+        if (hardware != null) 'hardware': hardware,
+        if (osVersion != null) 'osVersion': osVersion,
+        if (sdkInt != null) 'sdkInt': sdkInt,
+        if (isPhysicalDevice != null) 'isPhysicalDevice': isPhysicalDevice,
+      };
+}
+
 /// 创建账号请求
 class CreateAccountRequest {
-  final String deviceId;
-  final String? deviceName;
-  final String? inviterReferralCode;
-  final String? provinceCode;
-  final String? cityCode;
+  final String deviceId; // 必填: Android ID 或 iOS identifierForVendor
+  final DeviceHardwareInfo? deviceName; // 可选: 设备硬件信息 (JSON)
+  final String? inviterReferralCode; // 可选: 邀请人推荐码
 
   CreateAccountRequest({
     required this.deviceId,
     this.deviceName,
     this.inviterReferralCode,
-    this.provinceCode,
-    this.cityCode,
   });
 
   Map<String, dynamic> toJson() => {
         'deviceId': deviceId,
-        if (deviceName != null) 'deviceName': deviceName,
+        if (deviceName != null) 'deviceName': deviceName!.toJson(),
         if (inviterReferralCode != null)
           'inviterReferralCode': inviterReferralCode,
-        if (provinceCode != null) 'provinceCode': provinceCode,
-        if (cityCode != null) 'cityCode': cityCode,
       };
 }
 
@@ -108,33 +139,59 @@ class AccountService {
   })  : _apiClient = apiClient,
         _secureStorage = secureStorage;
 
-  /// 获取或生成设备ID
-  Future<String> getOrCreateDeviceId() async {
-    // 尝试从存储读取
-    var deviceId = await _secureStorage.read(key: StorageKeys.deviceId);
-    if (deviceId != null && deviceId.isNotEmpty) {
-      return deviceId;
-    }
-
-    // 生成新的设备ID
-    deviceId = const Uuid().v4();
-    await _secureStorage.write(key: StorageKeys.deviceId, value: deviceId);
-    return deviceId;
-  }
-
-  /// 获取设备名称
-  Future<String> getDeviceName() async {
-    final deviceInfo = DeviceInfoPlugin();
+  /// 获取设备唯一标识符
+  ///
+  /// Android: 使用 Android ID (64位十六进制字符串)
+  /// iOS: 使用 identifierForVendor
+  Future<String> getDeviceId() async {
+    final deviceInfoPlugin = DeviceInfoPlugin();
 
     if (Platform.isAndroid) {
-      final info = await deviceInfo.androidInfo;
-      return '${info.brand} ${info.model}';
+      final info = await deviceInfoPlugin.androidInfo;
+      return info.id; // Android ID
     } else if (Platform.isIOS) {
-      final info = await deviceInfo.iosInfo;
-      return info.name;
+      final info = await deviceInfoPlugin.iosInfo;
+      return info.identifierForVendor ?? const Uuid().v4();
     }
 
-    return 'Unknown Device';
+    // 其他平台回退到 UUID
+    return const Uuid().v4();
+  }
+
+  /// 获取设备硬件信息
+  ///
+  /// Android: 完整硬件信息
+  /// iOS: 基本信息
+  Future<DeviceHardwareInfo> getDeviceHardwareInfo() async {
+    final deviceInfoPlugin = DeviceInfoPlugin();
+
+    if (Platform.isAndroid) {
+      final info = await deviceInfoPlugin.androidInfo;
+      return DeviceHardwareInfo(
+        brand: info.brand,
+        manufacturer: info.manufacturer,
+        model: info.model,
+        device: info.device,
+        product: info.product,
+        hardware: info.hardware,
+        osVersion: info.version.release,
+        sdkInt: info.version.sdkInt,
+        isPhysicalDevice: info.isPhysicalDevice,
+      );
+    } else if (Platform.isIOS) {
+      final info = await deviceInfoPlugin.iosInfo;
+      return DeviceHardwareInfo(
+        brand: 'Apple',
+        manufacturer: 'Apple',
+        model: info.model,
+        device: info.name,
+        osVersion: info.systemVersion,
+        isPhysicalDevice: info.isPhysicalDevice,
+      );
+    }
+
+    // 其他平台返回空信息
+    return DeviceHardwareInfo();
   }
 
   /// 自动创建账号 (首次打开APP)
@@ -142,13 +199,12 @@ class AccountService {
   /// 使用 MPC 2-of-3 协议生成钱包地址
   Future<CreateAccountResponse> createAccount({
     String? inviterReferralCode,
-    String? provinceCode,
-    String? cityCode,
   }) async {
     try {
-      // 获取设备信息
-      final deviceId = await getOrCreateDeviceId();
-      final deviceName = await getDeviceName();
+      // 获取设备ID (必填)
+      final deviceId = await getDeviceId();
+      // 获取设备硬件信息 (可选)
+      final deviceName = await getDeviceHardwareInfo();
 
       // 调用 API
       final response = await _apiClient.post(
@@ -157,8 +213,6 @@ class AccountService {
           deviceId: deviceId,
           deviceName: deviceName,
           inviterReferralCode: inviterReferralCode,
-          provinceCode: provinceCode,
-          cityCode: cityCode,
         ).toJson(),
       );