feat(devices): P1 设备注册打通 —— 登录/注册即写 devices 表

后端:auth.Service 加 DeviceMeta + DeviceRegistrar 接口(consumer-side 解耦),
Login/Register 成功签发后 best-effort 注册设备(不强制设备上限,避免免费档重装
churn 锁死用户);handler 加 device 请求体;main 用 authDeviceRegistrar 适配
devices.Service 注入;normalizePlatform 加 linux。
客户端:新 device_identity.dart(SecureKV 接缝 + 稳定 UUIDv4 device_id 持久化 +
名称/平台/版本);弃用硬编码 'mac-001';auth_api login/register + connect 携带
device 元数据。加 uuid + device_info_plus 依赖。
测试:auth 设备注册(触发/best-effort/空 meta) + device_identity(生成/持久/
读失败不重生成/UUIDv4 形态);normalizePlatform linux=true。

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

client/lib/services/auth_api.dart

@@ -61,11 +61,13 @@ class AuthApi {
     required String email,
     required String code,
     required String password,
+    Map<String, dynamic>? device,
   }) async {
     final resp = await _post('/v1/auth/register', {
       'email': email,
       'code': code,
       'password': password,
+      if (device != null) 'device': device,
     });
     if (resp.statusCode != 200 && resp.statusCode != 201) {
       _throwFromResponse(resp);
@@ -78,10 +80,12 @@ class AuthApi {
   Future<AuthTokens> login({
     required String email,
     required String password,
+    Map<String, dynamic>? device,
   }) async {
     final resp = await _post('/v1/auth/login', {
       'email': email,
       'password': password,
+      if (device != null) 'device': device,
     });
     if (resp.statusCode != 200) _throwFromResponse(resp);
     return AuthTokens.fromJson(jsonDecode(resp.body) as Map<String, dynamic>);

client/lib/services/device_identity.dart

@@ -0,0 +1,134 @@
+// device_identity.dart — 设备身份:稳定 device_id + 名称/平台/客户端版本上报
+//
+// device_id 首次启动随机生成(UUID v4)、写入 flutter_secure_storage 持久化,之后
+// 每次读取复用 → 同一安装跨重启恒定(替换早期硬编码 'mac-001')。名称/平台/版本
+// 取自系统。随 登录/注册/连接 上报给控制面,用于「我的设备」登记与会话绑定。
+import 'dart:io' show Platform;
+
+import 'package:device_info_plus/device_info_plus.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+import 'package:package_info_plus/package_info_plus.dart';
+import 'package:uuid/uuid.dart';
+
+/// 设备元数据,随认证/连接请求上报。
+class DeviceMeta {
+  const DeviceMeta({
+    required this.id,
+    required this.name,
+    required this.platform,
+    required this.clientVersion,
+  });
+
+  final String id;
+  final String name;
+  final String platform; // ios | android | windows | macos | linux
+  final String clientVersion;
+
+  Map<String, dynamic> toJson() => {
+        'id': id,
+        'name': name,
+        'platform': platform,
+        'client_version': clientVersion,
+      };
+}
+
+/// 极简键值存储接缝(便于单测注入;默认走 flutter_secure_storage)。
+abstract class SecureKV {
+  Future<String?> read(String key);
+  Future<void> write(String key, String value);
+}
+
+class _SecureStorageKV implements SecureKV {
+  // 与 TokenStore 一致:macOS 文件式 keychain,避免未签名 app 报 -34018。
+  static const _s = FlutterSecureStorage(
+    mOptions: MacOsOptions(useDataProtectionKeyChain: false),
+  );
+  @override
+  Future<String?> read(String key) => _s.read(key: key);
+  @override
+  Future<void> write(String key, String value) => _s.write(key: key, value: value);
+}
+
+/// 设备身份服务。device_id 持久于安全存储;其余字段取自系统(缓存)。
+class DeviceIdentity {
+  DeviceIdentity({SecureKV? store}) : _kv = store ?? _SecureStorageKV();
+
+  final SecureKV _kv;
+  static const _kDeviceId = 'pangolin_device_id';
+  static const _uuid = Uuid();
+
+  String? _cachedId;
+  DeviceMeta? _cachedMeta;
+
+  /// 稳定 device_id。读到→复用;读到空→生成并持久化;
+  /// 读**失败**(平台异常)≠ 不存在 → 退回进程内临时 id,**不写库**,避免冲掉真实 id。
+  Future<String> deviceId() async {
+    if (_cachedId != null) return _cachedId!;
+    String? existing;
+    try {
+      existing = await _kv.read(_kDeviceId);
+    } catch (_) {
+      return _cachedId ??= _uuid.v4(); // 临时,不持久化
+    }
+    if (existing != null && existing.isNotEmpty) return _cachedId = existing;
+    final id = _uuid.v4();
+    try {
+      await _kv.write(_kDeviceId, id);
+    } catch (_) {
+      // 写失败:本次用内存值,下次再尝试持久化。
+    }
+    return _cachedId = id;
+  }
+
+  /// 完整设备元数据(缓存,首次解析后复用)。
+  Future<DeviceMeta> meta() async {
+    if (_cachedMeta != null) return _cachedMeta!;
+    final m = DeviceMeta(
+      id: await deviceId(),
+      name: await _name(),
+      platform: currentPlatform(),
+      clientVersion: await _clientVersion(),
+    );
+    return _cachedMeta = m;
+  }
+
+  /// 当前平台标识(与服务端 devices.platform 枚举对齐)。
+  static String currentPlatform() {
+    if (Platform.isIOS) return 'ios';
+    if (Platform.isAndroid) return 'android';
+    if (Platform.isMacOS) return 'macos';
+    if (Platform.isWindows) return 'windows';
+    if (Platform.isLinux) return 'linux';
+    return 'unknown';
+  }
+
+  Future<String> _name() async {
+    try {
+      if (Platform.isIOS) {
+        final i = await DeviceInfoPlugin().iosInfo;
+        return i.name.isNotEmpty ? i.name : i.utsname.machine;
+      }
+      if (Platform.isAndroid) {
+        final a = await DeviceInfoPlugin().androidInfo;
+        return '${a.manufacturer} ${a.model}'.trim();
+      }
+      // 桌面:主机名最有意义(MacBook-Pro / DESKTOP-XXXX)。
+      return Platform.localHostname;
+    } catch (_) {
+      return currentPlatform();
+    }
+  }
+
+  Future<String> _clientVersion() async {
+    try {
+      final info = await PackageInfo.fromPlatform();
+      return 'v${info.version}';
+    } catch (_) {
+      return '';
+    }
+  }
+}
+
+/// 单例 DeviceIdentity(测试可 override)。
+final deviceIdentityProvider = Provider<DeviceIdentity>((ref) => DeviceIdentity());

client/lib/state/connection_provider.dart

@@ -14,18 +14,13 @@ import '../bridge/vpn_bridge_provider.dart';
 import '../l10n/app_text.dart';
 import '../services/api_config.dart';
 import '../services/connect_api.dart';
+import '../services/device_identity.dart';
 import 'app_providers.dart';
 import 'auth_provider.dart';
 import 'nodes_provider.dart';
 import 'settings_provider.dart';
 
-// ── 设备 ID（MVP 常量；后续由 device_info_plus 取真实 ID）──────────
-
-const _kDeviceId = String.fromEnvironment(
-  'PANGOLIN_DEVICE_ID',
-  defaultValue: 'mac-001',
-);
-
+// 设备 ID 由 deviceIdentityProvider 提供(secure storage 持久化的稳定 UUID)。
 // API base URL 统一用 api_config.dart 的 kApiBaseUrl(单一来源,勿再重复声明)。
 
 // ── 连接阶段枚举 ──────────────────────────────────────────────────
@@ -133,13 +128,14 @@ class ConnectionController extends StateNotifier<ConnectionState> {
   /// 取配置;access token 过期(401)时用 refresh token 续期后**重试一次**。
   /// 续期失败(refresh 也过期 / 被拒)由 authProvider.refresh() 触发登出 → UI 回登录页。
   Future<String> _fetchConfigWithRefresh(String nodeUuid) async {
+    final deviceId = await _ref.read(deviceIdentityProvider).deviceId();
     Future<String> doFetch() {
       final token = _ref.read(authProvider).accessToken ?? '';
       _api?.dispose();
       _api = _ref.read(connectApiFactoryProvider)(token);
       return _api!.fetchConfig(
         nodeId: nodeUuid,
-        deviceId: _kDeviceId,
+        deviceId: deviceId,
         // smartRoute 偏好 → 国内分流(#5):国内 IP/域名直连,不走隧道。
         splitCN: _ref.read(settingsProvider).smartRoute,
       );

client/lib/widgets/auth_screen.dart

@@ -10,6 +10,7 @@ import '../l10n/app_text.dart';
 import '../pangolin_theme.dart';
 import '../services/api_config.dart';
 import '../services/auth_api.dart';
+import '../services/device_identity.dart';
 import '../state/auth_provider.dart';
 import 'pangolin_button.dart';
 import 'pangolin_icons.dart';
@@ -100,10 +101,12 @@ class _AuthScreenState extends ConsumerState<AuthScreen>
   Future<void> _doRegister() async {
     setState(() { _loading = true; _errorZh = null; });
     try {
+      final device = (await ref.read(deviceIdentityProvider).meta()).toJson();
       final tokens = await _api.register(
         email: _email.text.trim(),
         code: _code.text.trim(),
         password: _pw.text,
+        device: device,
       );
       await ref.read(tokenStoreProvider).saveLastEmail(_email.text.trim());
       await ref.read(authProvider.notifier).saveTokens(tokens);
@@ -116,9 +119,11 @@ class _AuthScreenState extends ConsumerState<AuthScreen>
   Future<void> _doLogin() async {
     setState(() { _loading = true; _errorZh = null; });
     try {
+      final device = (await ref.read(deviceIdentityProvider).meta()).toJson();
       final tokens = await _api.login(
         email: _email.text.trim(),
         password: _pw.text,
+        device: device,
       );
       await ref.read(tokenStoreProvider).saveLastEmail(_email.text.trim());
       await ref.read(authProvider.notifier).saveTokens(tokens);