diff --git a/client/lib/core/api/api_client.dart b/client/lib/core/api/api_client.dart
index cc386fd..2861b30 100644
--- a/client/lib/core/api/api_client.dart
+++ b/client/lib/core/api/api_client.dart
@@ -3,8 +3,10 @@ import 'package:flutter/foundation.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import '../auth/auth_state.dart';
 import '../config/app_config.dart';
+import '../config/license_copy.dart';
 import '../errors/error_reporter.dart';
 import '../../providers/connectivity_provider.dart';
+import '../../providers/license_provider.dart';
 import 'retry_interceptor.dart';
 
 /// Public Dio instance for unauthenticated calls (login / refresh)
@@ -30,8 +32,10 @@ final apiClientProvider = Provider<ApiClient>((ref) {
   final client = ApiClient(
     token: user?.accessToken,
     refreshToken: user?.refreshToken,
-    onTokenRefreshed: (newToken) {
-      ref.read(authStateProvider.notifier).updateAccessToken(newToken);
+    onTokensRefreshed: (accessToken, refreshToken) {
+      ref
+          .read(authStateProvider.notifier)
+          .updateAccessToken(accessToken, refreshToken);
     },
     onAuthFailed: (reason) {
       if (ref.read(authStateProvider).isLoggedIn) {
@@ -44,6 +48,27 @@ final apiClientProvider = Provider<ApiClient>((ref) {
     onConnectionError: () {
       ref.read(connectivityProvider.notifier).forceCheck();
     },
+    onForbidden: (body) {
+      final map = body is Map ? body : const <String, dynamic>{};
+      final code = map['code'];
+      final phase = map['phase'];
+      // 只读角色写被拒：直接提示（无需刷新授权）。
+      if (code == 'READONLY_USER') {
+        ref.read(apiMessageProvider.notifier).state =
+            LicenseCopy.readonlyUserToast;
+        return;
+      }
+      // 授权过期（readonly/locked）写被拒：刷新授权令横幅/按钮即时降级，并提示。
+      if (phase == 'readonly' || phase == 'locked') {
+        ref.read(licenseProvider.notifier).refresh().then((_) {
+          final lic = ref.read(licenseProvider).valueOrNull;
+          ref.read(apiMessageProvider.notifier).state = lic != null
+              ? LicenseCopy.writeBlockedToast(lic)
+              : '授权已过期，无法执行写操作';
+        });
+      }
+      // 其它 403（管理员/超管权限不足等）不在此统一处理，交由调用方。
+    },
   );
   ref.onDispose(client.dispose);
   return client;
@@ -53,13 +78,28 @@ class ApiClient {
   late final Dio _dio;
   bool _disposed = false;
 
+  /// 当前 refresh token。续期会轮换它，故必须可变并随响应更新——
+  /// provider 不会因 token 变化重建本实例（只监听 isLoggedIn）。
+  String? _refreshToken;
+
+  /// 单飞：并发 401 共享同一次刷新。否则每个 401 各发一次 /auth/refresh，
+  /// 各自轮换 jti，后到的请求重放已被取代的 jti → 触发盗用检测吊销整条会话。
+  Future<String?>? _refreshing;
+
+  void Function(String accessToken, String refreshToken)? _onTokensRefreshed;
+  void Function(String? reason)? _onAuthFailed;
+
   ApiClient({
     String? token,
     String? refreshToken,
-    void Function(String newToken)? onTokenRefreshed,
+    void Function(String accessToken, String refreshToken)? onTokensRefreshed,
     void Function(String? reason)? onAuthFailed,
     void Function()? onConnectionError,
+    void Function(dynamic body)? onForbidden,
   }) {
+    _refreshToken = refreshToken;
+    _onTokensRefreshed = onTokensRefreshed;
+    _onAuthFailed = onAuthFailed;
     _dio = Dio(BaseOptions(
       baseUrl: AppConfig.apiBaseUrl,
       connectTimeout: const Duration(seconds: 8),
@@ -98,29 +138,37 @@ class ApiClient {
             );
           }
 
-          if (e.response?.statusCode == 401 && (refreshToken ?? '').isNotEmpty) {
+          // 403：写权限被拒（只读角色 / 授权过期）。交给上层刷新授权 + 提示。
+          // 后端契约：body 带 code=READONLY_USER 或 phase=readonly|locked。
+          if (e.response?.statusCode == 403) {
+            if (!_disposed) onForbidden?.call(e.response?.data);
+            return handler.next(e);
+          }
+
+          // 账号被停用/删除：中间件返回 401 + code=USER_DISABLED。这是终态，
+          // 续期也救不回（refresh 会因 is_active=0 再次失败），直接强制重新登录。
+          if (e.response?.statusCode == 401 &&
+              e.response?.data is Map &&
+              e.response?.data['code'] == 'USER_DISABLED') {
+            if (!_disposed) {
+              _onAuthFailed?.call('您的账号已被停用或删除，请重新登录或联系管理员');
+            }
+            return handler.next(e);
+          }
+
+          if (e.response?.statusCode == 401 && (_refreshToken ?? '').isNotEmpty) {
             debugPrint('[ApiClient] got 401 on ${e.requestOptions.path}, trying refresh...');
+            final newToken = await _refreshAccessToken();
+            if (newToken == null) {
+              return handler.next(e);
+            }
             try {
-              final resp = await _publicDio.post('/auth/refresh', data: {
-                'refresh_token': refreshToken,
-              });
-              final newToken = resp.data['data']['access_token'] as String;
-              _dio.options.headers['Authorization'] = 'Bearer $newToken';
-              if (!_disposed) onTokenRefreshed?.call(newToken);
               final opts = e.requestOptions;
               opts.headers['Authorization'] = 'Bearer $newToken';
               final retryResp = await _dio.fetch(opts);
               return handler.resolve(retryResp);
-            } catch (refreshErr) {
-              debugPrint('[ApiClient] refresh failed: $refreshErr');
-              // 区分「被踢/会话失效」与普通登录过期，便于登录页给出明确提示
-              String? reason;
-              if (refreshErr is DioException &&
-                  refreshErr.response?.data is Map &&
-                  refreshErr.response?.data['code'] == 'SESSION_REVOKED') {
-                reason = '您的账号已在其他设备登录，或登录已失效，请重新登录';
-              }
-              if (!_disposed) onAuthFailed?.call(reason);
+            } catch (retryErr) {
+              return handler.next(retryErr is DioException ? retryErr : e);
             }
           } else if (e.response?.statusCode == 401) {
             debugPrint('[ApiClient] got 401 on ${e.requestOptions.path}, no refresh token');
@@ -131,6 +179,45 @@ class ApiClient {
     );
   }
 
+  /// 单飞刷新：并发 401 复用同一次 /auth/refresh，避免多次轮换 jti 触发盗用检测。
+  /// 成功返回新的 access token；失败（含会话已撤销）返回 null 并通知 onAuthFailed。
+  Future<String?> _refreshAccessToken() {
+    return _refreshing ??= _doRefresh().whenComplete(() => _refreshing = null);
+  }
+
+  Future<String?> _doRefresh() async {
+    try {
+      final resp = await _publicDio.post('/auth/refresh', data: {
+        'refresh_token': _refreshToken,
+      });
+      final data = resp.data['data'] as Map;
+      final newAccess = data['access_token'] as String;
+      // 后端轮换 refresh token，必须采纳新值（无则沿用旧值，兼容老后端）。
+      final newRefresh = (data['refresh_token'] as String?) ?? _refreshToken;
+      _refreshToken = newRefresh;
+      _dio.options.headers['Authorization'] = 'Bearer $newAccess';
+      if (!_disposed && newRefresh != null) {
+        _onTokensRefreshed?.call(newAccess, newRefresh);
+      }
+      return newAccess;
+    } catch (refreshErr) {
+      debugPrint('[ApiClient] refresh failed: $refreshErr');
+      // 区分「被踢/会话失效」与普通登录过期，便于登录页给出明确提示
+      String? reason;
+      if (refreshErr is DioException &&
+          refreshErr.response?.data is Map &&
+          refreshErr.response?.data['code'] == 'SESSION_REVOKED') {
+        reason = '您的账号已在其他设备登录，或登录已失效，请重新登录';
+      }
+      if (!_disposed) _onAuthFailed?.call(reason);
+      return null;
+    }
+  }
+
+  /// 仅供测试：访问内部 Dio，以便挂载 mock adapter 走真实拦截器（401/403 等）。
+  @visibleForTesting
+  Dio get dioForTest => _dio;
+
   /// 取消所有进行中的请求，标记实例为已废弃
   void dispose() {
     _disposed = true;
diff --git a/client/lib/core/auth/auth_state.dart b/client/lib/core/auth/auth_state.dart
index c0f5a4c..c67c792 100644
--- a/client/lib/core/auth/auth_state.dart
+++ b/client/lib/core/auth/auth_state.dart
@@ -45,6 +45,22 @@ class AuthState {
 class AuthNotifier extends StateNotifier<AuthState> {
   AuthNotifier() : super(const AuthState());
 
+  /// 会话代号：每次 login/logout 自增，使「上一会话」遗留的异步持久化写入失效。
+  /// 续期写回（updateAccessToken）是 fire-and-forget，若在并发登出清空 token 之后
+  /// 才落盘，会把已失效的 token 重新写回；持有此代号即可在写入前丢弃过期操作。
+  int _sessionGen = 0;
+
+  /// 串行化 SharedPreferences 写入：保证 login / updateAccessToken / logout 的持久化
+  /// 按调用顺序落盘，杜绝并发交错（如续期写入与登出 remove 交叉）。
+  Future<void> _storageQueue = Future.value();
+
+  Future<void> _runStorage(Future<void> Function() op) {
+    final next = _storageQueue.then((_) => op());
+    // 吞掉单次写入异常，避免队列被卡死。
+    _storageQueue = next.catchError((_) {});
+    return next;
+  }
+
   /// Called at app startup to restore persisted session.
   Future<void> restore() async {
     try {
@@ -80,28 +96,43 @@ class AuthNotifier extends StateNotifier<AuthState> {
 
   Future<void> login(AuthUser user) async {
     debugPrint('[Auth] login() called, username=${user.username} shopId=${user.shopId}');
-    final prefs = await SharedPreferences.getInstance();
-    await prefs.setString(_kAccessToken, user.accessToken);
-    await prefs.setString(_kRefreshToken, user.refreshToken);
-    await prefs.setString(_kUsername, user.username);
-    await prefs.setString(_kRealName, user.realName);
-    await prefs.setString(_kShopNo, user.shopNo);
-    await prefs.setString(_kShopId, user.shopId.toString());
-    await prefs.setString(_kRole, user.role);
-    debugPrint('[Auth] login() setting state, token prefix: ${user.accessToken.substring(0, user.accessToken.length.clamp(0, 20))}...');
+    final gen = ++_sessionGen;
+    await _runStorage(() async {
+      if (gen != _sessionGen) return; // 期间又发生 login/logout → 放弃这次写盘
+      final prefs = await SharedPreferences.getInstance();
+      await prefs.setString(_kAccessToken, user.accessToken);
+      await prefs.setString(_kRefreshToken, user.refreshToken);
+      await prefs.setString(_kUsername, user.username);
+      await prefs.setString(_kRealName, user.realName);
+      await prefs.setString(_kShopNo, user.shopNo);
+      await prefs.setString(_kShopId, user.shopId.toString());
+      await prefs.setString(_kRole, user.role);
+    });
     state = AuthState(initialized: true, user: user);
     debugPrint('[Auth] login() state set, isLoggedIn=${state.isLoggedIn}');
   }
 
-  void updateAccessToken(String newToken) {
+  /// 续期后写回令牌。后端会**轮换 refresh token**（jti 轮换 + 盗用检测），
+  /// 因此必须连同新的 refresh token 一起持久化；若仍沿用旧 refresh token，
+  /// 下次续期会重放已被取代的 jti，触发盗用检测吊销整条会话，导致被强制登出。
+  /// [newRefreshToken] 省略（如旧调用方）时保留原 refresh token。
+  void updateAccessToken(String newToken, [String? newRefreshToken]) {
     if (state.user == null) return;
-    SharedPreferences.getInstance()
-        .then((prefs) => prefs.setString(_kAccessToken, newToken));
+    final gen = _sessionGen;
+    final refreshToken = newRefreshToken ?? state.user!.refreshToken;
+    // fire-and-forget，但经队列串行 + 代号守卫：若落盘前发生过登出/重登，丢弃此次写入，
+    // 避免把已失效的 token 写回 SharedPreferences。
+    _runStorage(() async {
+      if (gen != _sessionGen) return;
+      final prefs = await SharedPreferences.getInstance();
+      await prefs.setString(_kAccessToken, newToken);
+      await prefs.setString(_kRefreshToken, refreshToken);
+    });
     state = AuthState(
       initialized: true,
       user: AuthUser(
         accessToken: newToken,
-        refreshToken: state.user!.refreshToken,
+        refreshToken: refreshToken,
         username: state.user!.username,
         realName: state.user!.realName,
         shopNo: state.user!.shopNo,
@@ -113,8 +144,11 @@ class AuthNotifier extends StateNotifier<AuthState> {
 
   Future<void> logout() async {
     debugPrint('[Auth] logout() called! stack: ${StackTrace.current}');
-    // 尽力通知后端撤销当前会话（离线/失败均忽略，不阻塞本地登出）
     final token = state.user?.accessToken;
+    // 先作废在途的令牌持久化并立即本地登出，使任何并发的续期写入在落盘前被丢弃。
+    _sessionGen++;
+    state = const AuthState(initialized: true);
+    // 尽力通知后端撤销当前会话（离线/失败均忽略，不阻塞本地登出）
     if (token != null && token.isNotEmpty) {
       try {
         await Dio(BaseOptions(
@@ -127,15 +161,17 @@ class AuthNotifier extends StateNotifier<AuthState> {
         // ignore: 后端不可达或会话已失效都无所谓
       }
     }
-    final prefs = await SharedPreferences.getInstance();
-    await prefs.remove(_kAccessToken);
-    await prefs.remove(_kRefreshToken);
-    await prefs.remove(_kUsername);
-    await prefs.remove(_kRealName);
-    await prefs.remove(_kShopNo);
-    await prefs.remove(_kShopId);
-    await prefs.remove(_kRole);
-    state = const AuthState(initialized: true);
+    // 经队列串行清空 token，排在任何先前入队的续期写入之后，确保最终为已登出状态。
+    await _runStorage(() async {
+      final prefs = await SharedPreferences.getInstance();
+      await prefs.remove(_kAccessToken);
+      await prefs.remove(_kRefreshToken);
+      await prefs.remove(_kUsername);
+      await prefs.remove(_kRealName);
+      await prefs.remove(_kShopNo);
+      await prefs.remove(_kShopId);
+      await prefs.remove(_kRole);
+    });
   }
 }
 
@@ -146,6 +182,10 @@ final authStateProvider = StateNotifierProvider<AuthNotifier, AuthState>(
 /// 会话结束提示语（被踢下线 / 会话失效）。登录页监听后弹出提示并清空。
 final sessionEndedMessageProvider = StateProvider<String?>((ref) => null);
 
+/// 全局轻提示（如写请求被后端 403 拒绝时的原因说明）。
+/// app_shell 监听后 showSnackBar 并清空，避免各业务层各自处理。
+final apiMessageProvider = StateProvider<String?>((ref) => null);
+
 /// 当前登录用户是否为只读角色（role == 'readonly'）。
 /// 只读用户禁止任何写操作：UI 据此隐藏新增/编辑/删除/审核等按钮，
 /// 后端亦有 middleware.ReadOnly() 兜底返回 403。
diff --git a/client/lib/core/config/license_copy.dart b/client/lib/core/config/license_copy.dart
new file mode 100644
index 0000000..32954f9
--- /dev/null
+++ b/client/lib/core/config/license_copy.dart
@@ -0,0 +1,159 @@
+import 'package:flutter/material.dart';
+
+import '../../models/license.dart';
+import '../theme/app_theme.dart';
+
+/// 授权阶段文案 + 阈值的集中配置。
+///
+/// 所有授权相关提示（顶部横幅、到期弹窗、设置页状态、底部状态栏、过期说明）
+/// 统一在此维护，组件层不再硬编码文案与天数阈值。
+///
+/// 阈值须与后端 `backend/internal/middleware/license_guard.go` 保持一致：
+///   宽限期 0–[graceDays] 天（仍可写）→ 只读 [graceDays]–[readonlyDays] 天 → 锁定 [readonlyDays] 天+。
+class LicenseCopy {
+  LicenseCopy._();
+
+  /// 宽限期上限（天）：过期 ≤ 此值仍可正常写入。
+  static const int graceDays = 7;
+
+  /// 只读期上限（天）：过期 ≤ 此值进入只读；超过则锁定登录。
+  static const int readonlyDays = 15;
+
+  /// 顶部横幅文案（仅 grace/readonly/locked 显示；normal 返回空串）。
+  static String banner(LicenseInfo lic) {
+    final d = lic.daysExpired;
+    switch (lic.phase) {
+      case 'grace':
+        return '授权已过期 $d 天，请及时续费，否则将影响您的正常使用';
+      case 'readonly':
+        return '授权已过期 $d 天，已进入只读模式，暂时无法新增或修改数据；'
+            '过期满 $readonlyDays 天后将彻底锁定，请尽快续费';
+      case 'locked':
+        return '授权已过期 $d 天并已锁定，所有功能已停用，请立即续费或激活新授权码';
+      default:
+        return '';
+    }
+  }
+
+  /// 设置页「授权状态」行文案。
+  static String statusText(LicenseInfo lic) {
+    switch (lic.phase) {
+      case 'grace':
+        return '宽限期 · 已过期 ${lic.daysExpired} 天';
+      case 'readonly':
+        return '只读模式 · 已过期 ${lic.daysExpired} 天';
+      case 'locked':
+        return '已锁定 · 已过期 ${lic.daysExpired} 天';
+      default:
+        return lic.expiresAt == null
+            ? '正常（永久授权）'
+            : '正常（剩余 ${lic.daysRemaining ?? 0} 天）';
+    }
+  }
+
+  /// 底部状态栏紧凑文案。[expiryDate] 为已格式化的到期日（yyyy-MM-dd）。
+  static String statusBar(LicenseInfo lic, String expiryDate) {
+    switch (lic.phase) {
+      case 'grace':
+        return '授权宽限期 · 已过期 ${lic.daysExpired} 天';
+      case 'readonly':
+        return '只读模式 · 已过期 ${lic.daysExpired} 天';
+      case 'locked':
+        return '已锁定 · 已过期 ${lic.daysExpired} 天';
+      default:
+        return lic.expiresAt == null ? '永久授权' : '授权正常 · 到期 $expiryDate';
+    }
+  }
+
+  /// 到期提醒弹窗的（标题, 正文）。
+  static (String title, String body) dialog(LicenseInfo lic) {
+    final d = lic.daysExpired;
+    switch (lic.phase) {
+      case 'locked':
+        return (
+          '授权已锁定',
+          '您的授权已过期 $d 天（超过 $readonlyDays 天），所有功能已停用。\n'
+              '请前往「设置 → 授权」激活新的授权码，或联系客服续费。',
+        );
+      case 'readonly':
+        return (
+          '授权已过期 · 只读模式',
+          '您的授权已过期 $d 天，系统进入只读模式，无法执行任何写操作。\n'
+              '过期满 $readonlyDays 天后将彻底锁定登录，请尽快续费。',
+        );
+      default: // grace
+        return (
+          '授权已过期',
+          '您的授权已过期 $d 天，目前仍可正常使用（宽限期 $graceDays 天）。\n'
+              '过期超过 $graceDays 天将进入只读模式，请尽快续费以免影响使用。',
+        );
+    }
+  }
+
+  /// 只读账号尝试写操作被后端拒绝（403 code=READONLY_USER）时的提示。
+  static const String readonlyUserToast = '当前为只读账号，仅可查看数据，无法新增或修改';
+
+  /// 写按钮被授权过期禁用时，点击弹出的提示文案。
+  static String writeBlockedToast(LicenseInfo lic) {
+    switch (lic.phase) {
+      case 'locked':
+        return '授权已过期 ${lic.daysExpired} 天并已锁定，无法操作，请前往「设置 → 授权」续费或激活';
+      default: // readonly
+        return '授权已过期 ${lic.daysExpired} 天，已进入只读模式，续费后可继续操作（设置 → 授权）';
+    }
+  }
+
+  // ---- 阶段视觉（颜色 / 图标）集中映射 ----
+  // 顶部横幅、底部状态条、设置页状态三处此前各自硬编码 phase→色，readonly 取色还分叉
+  // （横幅 0xFFB71C1C vs 状态条 0xFFEF5350）。这里按「角色」给出单一来源：
+  //   - [bannerColor]：顶部横幅**实底背景**（白字承其上），仅 grace/readonly/locked 显示。
+  //   - [phaseColor] ：前景强调色（底部状态条图标+文字、设置页状态文字共用一套）。
+  //   - [phaseIcon]  ：状态图标（状态条用）。
+
+  /// 顶部横幅实底背景色（深色调，承载白字）。normal 不显示横幅，返回透明。
+  static Color bannerColor(String phase) {
+    switch (phase) {
+      case 'locked':
+        return AppTheme.danger;
+      case 'readonly':
+        return const Color(0xFFB71C1C); // 深红，强调即将彻底锁定
+      case 'grace':
+        return const Color(0xFFE65100); // 深橙
+      default:
+        return Colors.transparent;
+    }
+  }
+
+  /// 前景强调色：normal=正常绿，grace=警告橙，readonly/locked=危险红。
+  static Color phaseColor(String phase) {
+    switch (phase) {
+      case 'grace':
+        return AppTheme.warning500;
+      case 'readonly':
+      case 'locked':
+        return AppTheme.danger;
+      default:
+        return AppTheme.success;
+    }
+  }
+
+  /// 状态图标：normal=已验证，grace=警告，readonly/locked=错误。
+  static IconData phaseIcon(String phase) {
+    switch (phase) {
+      case 'grace':
+        return Icons.warning_amber_rounded;
+      case 'readonly':
+      case 'locked':
+        return Icons.error_outline;
+      default:
+        return Icons.verified_user_outlined;
+    }
+  }
+
+  /// 过期降级说明（设置页固定展示），随阈值自动联动。
+  static List<String> degradationNotes() => [
+        '过期 $graceDays 天内（宽限期）：仍可正常使用，请尽快续费',
+        '过期 $graceDays–$readonlyDays 天（只读期）：仅能查看数据，无法新增或修改',
+        '过期满 $readonlyDays 天：系统锁定，无法登录，需续费或激活新授权码后恢复',
+      ];
+}
diff --git a/client/lib/core/router/app_router.dart b/client/lib/core/router/app_router.dart
index e4bf2a2..c2b8759 100644
--- a/client/lib/core/router/app_router.dart
+++ b/client/lib/core/router/app_router.dart
@@ -142,7 +142,19 @@ final appRouterProvider = Provider<GoRouter>((ref) {
                   productId: int.parse(state.pathParameters['id']!)))),
           GoRoute(
               path: '/settings',
-              pageBuilder: (_, __) => _noTransition(const SettingsScreen())),
+              pageBuilder: (_, state) {
+                const tabIndex = {
+                  'shop': 0,
+                  'users': 1,
+                  'number': 2,
+                  'system': 3,
+                  'license': 4,
+                  'import': 5,
+                };
+                final tab =
+                    tabIndex[state.uri.queryParameters['tab']] ?? 0;
+                return _noTransition(SettingsScreen(initialTab: tab));
+              }),
           GoRoute(
               path: '/devices',
               pageBuilder: (_, __) =>
diff --git a/client/lib/models/license.dart b/client/lib/models/license.dart
index c5d156a..0e3c61f 100644
--- a/client/lib/models/license.dart
+++ b/client/lib/models/license.dart
@@ -50,6 +50,13 @@ class LicenseInfo {
     return diff < 0 ? 0 : diff;
   }
 
+  /// 已过期天数（未过期或永久授权返回 0）。
+  int get daysExpired {
+    if (expiresAt == null) return 0;
+    final diff = DateTime.now().difference(expiresAt!).inDays;
+    return diff < 0 ? 0 : diff;
+  }
+
   bool get isReadOnlyPhase => phase == 'readonly' || phase == 'locked';
   bool get isLockedPhase => phase == 'locked';
   bool get needsAttention => phase == 'grace' || phase == 'readonly' || phase == 'locked';
diff --git a/client/lib/providers/license_provider.dart b/client/lib/providers/license_provider.dart
index 1da67a0..524797f 100644
--- a/client/lib/providers/license_provider.dart
+++ b/client/lib/providers/license_provider.dart
@@ -32,4 +32,27 @@ class LicenseNotifier extends AsyncNotifier<LicenseInfo?> {
     state = const AsyncValue.loading();
     state = AsyncValue.data(await _fetch());
   }
+
+  /// 后台静默刷新（供心跳调用）：不闪 loading；
+  /// 仅在成功拿到结果时更新（含「确无授权」的 null），
+  /// 网络/瞬时错误则保留上次状态，避免把已有授权误刷成「未激活」。
+  /// 会话被撤销(401)由 ApiClient 拦截器统一处理（触发登出），与此无关。
+  Future<void> refresh() async {
+    try {
+      final info = await ref.read(licenseRepositoryProvider).getInfo();
+      state = AsyncValue.data(info);
+    } catch (_) {
+      // 保留上次状态
+    }
+  }
+
+  /// 直接采纳心跳 /auth/ping 回带的授权概况，免去单独再请求 /license/info。
+  /// [raw] 为后端 LicenseInfoView 的 JSON（与 /license/info 同构）；
+  /// 为 null 表示「确无有效授权」，与 reload/refresh 拿到 null 语义一致。
+  void applyServerInfo(dynamic raw) {
+    final info = raw == null
+        ? null
+        : LicenseInfo.fromJson(Map<String, dynamic>.from(raw as Map));
+    state = AsyncValue.data(info);
+  }
 }
diff --git a/client/lib/providers/session_heartbeat.dart b/client/lib/providers/session_heartbeat.dart
index 84a29d2..b5adb8f 100644
--- a/client/lib/providers/session_heartbeat.dart
+++ b/client/lib/providers/session_heartbeat.dart
@@ -3,11 +3,15 @@ import 'package:flutter/foundation.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import '../core/api/api_client.dart';
 import '../core/auth/auth_state.dart';
+import 'license_provider.dart';
 
-/// 登录态心跳：已登录时每 30s 打一次 POST /auth/ping。
-/// 若会话已被撤销（被踢/管理员强制下线），后端返回 401，
-/// ApiClient 的拦截器会触发 refresh→失败→onAuthFailed→logout，
-/// 因此空闲用户也能在 ~30s 内感知到被下线。
+/// 登录态心跳：已登录时每 30s 执行一次 **单个** POST /auth/ping：
+///   - 会话/在线检查：若会话已被撤销（被踢/管理员强制下线），后端返回 401，
+///     ApiClient 拦截器触发 refresh→失败→onAuthFailed→logout，因此空闲用户也能在
+///     ~30s 内感知到被下线；同时刷新 last_seen_at（在线状态）。
+///   - 授权状态检查：ping 响应**回带**当前授权概况（license 字段，与 /license/info 同构），
+///     直接喂给 licenseProvider，使到期/续费/被改动等变化在 ~30s 内反映到横幅/状态栏/设置页。
+///     如此一次心跳即覆盖两件事，**无需**再单独轮询 /license/info（每 30s 少一次请求）。
 final sessionHeartbeatProvider = Provider<SessionHeartbeat>((ref) {
   final hb = SessionHeartbeat(ref);
   ref.onDispose(hb.dispose);
@@ -28,10 +32,18 @@ class SessionHeartbeat {
 
   Future<void> _ping() async {
     if (!_ref.read(authStateProvider).isLoggedIn) return;
+    // 一次 ping 同时完成会话/在线检查与授权概况刷新。
     try {
-      await _ref.read(apiClientProvider).post('/auth/ping');
+      final resp = await _ref.read(apiClientProvider).post('/auth/ping');
+      // ping 可能已触发登出，故重新判断登录态后再采纳授权概况。
+      final data = resp.data is Map ? resp.data['data'] : null;
+      if (data is Map &&
+          data.containsKey('license') &&
+          _ref.read(authStateProvider).isLoggedIn) {
+        _ref.read(licenseProvider.notifier).applyServerInfo(data['license']);
+      }
     } catch (e) {
-      // 401 已由 ApiClient 拦截器处理（触发登出）；其余错误忽略
+      // 401 已由 ApiClient 拦截器处理（触发登出）；其余错误忽略，保留上次授权状态
       debugPrint('[Heartbeat] ping failed: $e');
     }
   }
diff --git a/client/lib/screens/finance/finance_screen.dart b/client/lib/screens/finance/finance_screen.dart
index 8f3b6bb..d1667d1 100644
--- a/client/lib/screens/finance/finance_screen.dart
+++ b/client/lib/screens/finance/finance_screen.dart
@@ -169,10 +169,12 @@ class _FinanceTabState extends ConsumerState<_FinanceTab> {
       ],
       actions: (canClose && !WriteGuard.isReadonly(ref))
           ? [
-              TextButton(
-                onPressed: () => _closeRecord(r),
-                child: const Text('结清',
-                    style: TextStyle(fontSize: 13, color: AppTheme.success)),
+              WriteGuard(
+                child: TextButton(
+                  onPressed: () => _closeRecord(r),
+                  child: const Text('结清',
+                      style: TextStyle(fontSize: 13, color: AppTheme.success)),
+                ),
               ),
             ]
           : null,
@@ -318,10 +320,12 @@ class _FinanceTabState extends ConsumerState<_FinanceTab> {
           if ((r.type == 'payable' || r.type == 'receivable') &&
               r.status == 'open' &&
               !WriteGuard.isReadonly(ref)) {
-            return DataCell(TextButton(
-              onPressed: () => _closeRecord(r),
-              child: const Text('结清',
-                  style: TextStyle(fontSize: 12, color: AppTheme.success)),
+            return DataCell(WriteGuard(
+              child: TextButton(
+                onPressed: () => _closeRecord(r),
+                child: const Text('结清',
+                    style: TextStyle(fontSize: 12, color: AppTheme.success)),
+              ),
             ));
           }
           return const DataCell(SizedBox());
@@ -419,10 +423,12 @@ class _FinanceTabState extends ConsumerState<_FinanceTab> {
             toolbar: Row(
               children: [
                 if (addLabel != null && !WriteGuard.isReadonly(ref))
-                  ElevatedButton.icon(
-                    onPressed: _showAddDialog,
-                    icon: const Icon(Icons.add, size: 16),
-                    label: Text(addLabel),
+                  WriteGuard(
+                    child: ElevatedButton.icon(
+                      onPressed: _showAddDialog,
+                      icon: const Icon(Icons.add, size: 16),
+                      label: Text(addLabel),
+                    ),
                   ),
                 if (addLabel != null && !WriteGuard.isReadonly(ref))
                   const SizedBox(width: 8),
diff --git a/client/lib/screens/inventory/inventory_list_screen.dart b/client/lib/screens/inventory/inventory_list_screen.dart
index 6113c82..1403cf9 100644
--- a/client/lib/screens/inventory/inventory_list_screen.dart
+++ b/client/lib/screens/inventory/inventory_list_screen.dart
@@ -79,6 +79,33 @@ class _InventoryListScreenState extends ConsumerState<InventoryListScreen> {
     ref.read(inventoryListProvider.notifier).setKeyword(_searchCtrl.text.trim());
   }
 
+  /// 备注列展示：editable 时附带编辑图标（用于 WriteGuard 的可点子控件），
+  /// 否则纯文本（只读角色占位）。
+  Widget _remarkDisplay(Inventory item, {required bool editable}) {
+    return Row(
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        Text(
+          item.remark.isEmpty
+              ? '—'
+              : item.remark.length > 4
+                  ? '${item.remark.substring(0, 4)}…'
+                  : item.remark,
+          style: TextStyle(
+            color: item.remark.isEmpty
+                ? AppTheme.textSecondary
+                : AppTheme.textPrimary,
+          ),
+        ),
+        if (editable) ...[
+          const SizedBox(width: 4),
+          const Icon(Icons.edit_outlined,
+              size: 12, color: AppTheme.textSecondary),
+        ],
+      ],
+    );
+  }
+
   Future<void> _editRemark(BuildContext context, Inventory item) async {
     final ctrl = TextEditingController(text: item.remark);
     final saved = await showDialog<String>(
@@ -304,28 +331,13 @@ class _InventoryListScreenState extends ConsumerState<InventoryListScreen> {
       'remark' => DataCell(Tooltip(
           message: item.remark.isEmpty ? '' : item.remark,
           waitDuration: const Duration(milliseconds: 300),
-          child: GestureDetector(
-            onTap: WriteGuard.isReadonly(ref)
-                ? null
-                : () => _editRemark(context, item),
-            child: Row(
-              mainAxisSize: MainAxisSize.min,
-              children: [
-                Text(
-                  item.remark.isEmpty
-                      ? '—'
-                      : item.remark.length > 4
-                          ? '${item.remark.substring(0, 4)}…'
-                          : item.remark,
-                  style: TextStyle(
-                    color: item.remark.isEmpty
-                        ? AppTheme.textSecondary
-                        : AppTheme.textPrimary,
-                  ),
-                ),
-                const SizedBox(width: 4),
-                const Icon(Icons.edit_outlined, size: 12, color: AppTheme.textSecondary),
-              ],
+          // 内联编辑入口统一交给 WriteGuard：只读角色显示纯文本（无编辑图标），
+          // 授权过期则由 WriteGuard 自动置灰并在点击时弹提示——不再手搓三元 + toast。
+          child: WriteGuard(
+            placeholder: _remarkDisplay(item, editable: false),
+            child: GestureDetector(
+              onTap: () => _editRemark(context, item),
+              child: _remarkDisplay(item, editable: true),
             ),
           ))),
       'status' => DataCell(_InventoryStatusBadge(item)),
@@ -374,9 +386,11 @@ class _InventoryListScreenState extends ConsumerState<InventoryListScreen> {
       ],
       actions: [
         if (!WriteGuard.isReadonly(ref))
-          TextButton(
-            onPressed: () => _editRemark(context, item),
-            child: const Text('备注', style: TextStyle(fontSize: 13)),
+          WriteGuard(
+            child: TextButton(
+              onPressed: () => _editRemark(context, item),
+              child: const Text('备注', style: TextStyle(fontSize: 13)),
+            ),
           ),
         if (item.productId != null)
           TextButton(
@@ -622,16 +636,19 @@ class _InventoryListScreenState extends ConsumerState<InventoryListScreen> {
                         Row(
                           children: [
                             if (canCheck)
-                              OutlinedButton.icon(
-                                onPressed: () => context.go('/inventory/check'),
-                                icon: const Icon(Icons.fact_check, size: 16),
-                                label: const Text('盘点'),
-                                style: OutlinedButton.styleFrom(
-                                  padding: const EdgeInsets.symmetric(
-                                      horizontal: 10, vertical: 6),
-                                  minimumSize: Size.zero,
-                                  tapTargetSize:
-                                      MaterialTapTargetSize.shrinkWrap,
+                              WriteGuard(
+                                child: OutlinedButton.icon(
+                                  onPressed: () =>
+                                      context.go('/inventory/check'),
+                                  icon: const Icon(Icons.fact_check, size: 16),
+                                  label: const Text('盘点'),
+                                  style: OutlinedButton.styleFrom(
+                                    padding: const EdgeInsets.symmetric(
+                                        horizontal: 10, vertical: 6),
+                                    minimumSize: Size.zero,
+                                    tapTargetSize:
+                                        MaterialTapTargetSize.shrinkWrap,
+                                  ),
                                 ),
                               ),
                             const Spacer(),
@@ -671,10 +688,12 @@ class _InventoryListScreenState extends ConsumerState<InventoryListScreen> {
                       SizedBox(width: 220, child: searchField),
                       const SizedBox(width: 12),
                       if (canCheck) ...[
-                        OutlinedButton.icon(
-                          onPressed: () => context.go('/inventory/check'),
-                          icon: const Icon(Icons.fact_check, size: 16),
-                          label: const Text('发起盘点'),
+                        WriteGuard(
+                          child: OutlinedButton.icon(
+                            onPressed: () => context.go('/inventory/check'),
+                            icon: const Icon(Icons.fact_check, size: 16),
+                            label: const Text('发起盘点'),
+                          ),
                         ),
                         const SizedBox(width: 8),
                       ],
diff --git a/client/lib/screens/partners/partners_screen.dart b/client/lib/screens/partners/partners_screen.dart
index ce13862..a1e695c 100644
--- a/client/lib/screens/partners/partners_screen.dart
+++ b/client/lib/screens/partners/partners_screen.dart
@@ -170,16 +170,20 @@ class _PartnersScreenState extends ConsumerState<PartnersScreen> {
         actions: WriteGuard.isReadonly(ref)
             ? const []
             : [
-                TextButton(
-                  key: Key('btn_edit_${p.id}'),
-                  onPressed: () => onEdit(p),
-                  child: const Text('编辑', style: TextStyle(fontSize: 13)),
+                WriteGuard(
+                  child: TextButton(
+                    key: Key('btn_edit_${p.id}'),
+                    onPressed: () => onEdit(p),
+                    child: const Text('编辑', style: TextStyle(fontSize: 13)),
+                  ),
                 ),
-                TextButton(
-                  key: Key('btn_delete_${p.id}'),
-                  onPressed: () => onDelete(p),
-                  child: const Text('删除',
-                      style: TextStyle(fontSize: 13, color: AppTheme.danger)),
+                WriteGuard(
+                  child: TextButton(
+                    key: Key('btn_delete_${p.id}'),
+                    onPressed: () => onDelete(p),
+                    child: const Text('删除',
+                        style: TextStyle(fontSize: 13, color: AppTheme.danger)),
+                  ),
                 ),
               ],
       );
@@ -195,10 +199,12 @@ class _PartnersScreenState extends ConsumerState<PartnersScreen> {
       toolbar: Row(
         children: [
           if (!WriteGuard.isReadonly(ref)) ...[
-            ElevatedButton.icon(
-              onPressed: onAdd,
-              icon: const Icon(Icons.add, size: 16),
-              label: Text(isSupplier ? '新建' : '新建'),
+            WriteGuard(
+              child: ElevatedButton.icon(
+                onPressed: onAdd,
+                icon: const Icon(Icons.add, size: 16),
+                label: Text(isSupplier ? '新建' : '新建'),
+              ),
             ),
             const SizedBox(width: 8),
           ],
@@ -288,19 +294,23 @@ class _PartnersScreenState extends ConsumerState<PartnersScreen> {
                         children: WriteGuard.isReadonly(ref)
                             ? const []
                             : [
-                                TextButton(
-                                  key: Key('btn_edit_${p.id}'),
-                                  onPressed: () => onEdit(p),
-                                  child: const Text('编辑',
-                                      style: TextStyle(fontSize: 12)),
+                                WriteGuard(
+                                  child: TextButton(
+                                    key: Key('btn_edit_${p.id}'),
+                                    onPressed: () => onEdit(p),
+                                    child: const Text('编辑',
+                                        style: TextStyle(fontSize: 12)),
+                                  ),
                                 ),
-                                TextButton(
-                                  key: Key('btn_delete_${p.id}'),
-                                  onPressed: () => onDelete(p),
-                                  child: const Text('删除',
-                                      style: TextStyle(
-                                          fontSize: 12,
-                                          color: AppTheme.danger)),
+                                WriteGuard(
+                                  child: TextButton(
+                                    key: Key('btn_delete_${p.id}'),
+                                    onPressed: () => onDelete(p),
+                                    child: const Text('删除',
+                                        style: TextStyle(
+                                            fontSize: 12,
+                                            color: AppTheme.danger)),
+                                  ),
                                 ),
                               ],
                       )),
diff --git a/client/lib/screens/products/products_screen.dart b/client/lib/screens/products/products_screen.dart
index 223cba1..9a8755e 100644
--- a/client/lib/screens/products/products_screen.dart
+++ b/client/lib/screens/products/products_screen.dart
@@ -358,10 +358,12 @@ class _ProductsScreenState extends ConsumerState<ProductsScreen> {
     return Row(
       children: [
         if (!WriteGuard.isReadonly(ref)) ...[
-          ElevatedButton.icon(
-            onPressed: onAdd,
-            icon: const Icon(Icons.add, size: 16),
-            label: const Text('新建'),
+          WriteGuard(
+            child: ElevatedButton.icon(
+              onPressed: onAdd,
+              icon: const Icon(Icons.add, size: 16),
+              label: const Text('新建'),
+            ),
           ),
           const SizedBox(width: 8),
         ],
@@ -422,14 +424,18 @@ class _ProductsScreenState extends ConsumerState<ProductsScreen> {
       actions: WriteGuard.isReadonly(ref)
           ? const []
           : [
-              TextButton(
-                onPressed: onEdit,
-                child: const Text('编辑', style: TextStyle(fontSize: 13)),
+              WriteGuard(
+                child: TextButton(
+                  onPressed: onEdit,
+                  child: const Text('编辑', style: TextStyle(fontSize: 13)),
+                ),
               ),
-              TextButton(
-                onPressed: onDelete,
-                child: const Text('删除',
-                    style: TextStyle(fontSize: 13, color: AppTheme.danger)),
+              WriteGuard(
+                child: TextButton(
+                  onPressed: onDelete,
+                  child: const Text('删除',
+                      style: TextStyle(fontSize: 13, color: AppTheme.danger)),
+                ),
               ),
             ],
     );
diff --git a/client/lib/screens/settings/settings_screen.dart b/client/lib/screens/settings/settings_screen.dart
index 21798eb..dbe3433 100644
--- a/client/lib/screens/settings/settings_screen.dart
+++ b/client/lib/screens/settings/settings_screen.dart
@@ -12,19 +12,21 @@ import '../../core/auth/auth_state.dart';
 import '../../widgets/write_guard.dart';
 import '../../core/config/app_config.dart';
 import '../../core/config/app_info.dart';
+import '../../core/config/license_copy.dart';
 import '../../core/responsive/responsive.dart';
 import '../../core/theme/app_theme.dart';
 import '../../models/number_rule.dart';
 import '../../models/user.dart';
 import '../../providers/license_provider.dart';
-import '../../repositories/license_repository.dart';
 import '../../providers/number_rule_provider.dart';
 import '../../providers/user_provider.dart';
 import '../../providers/shop_provider.dart';
 import '../../models/shop.dart';
 
 class SettingsScreen extends ConsumerStatefulWidget {
-  const SettingsScreen({super.key});
+  /// 初始选中的 Tab（0=酒行信息 … 4=授权 … 5=数据管理）。
+  final int initialTab;
+  const SettingsScreen({super.key, this.initialTab = 0});
 
   @override
   ConsumerState<SettingsScreen> createState() => _SettingsScreenState();
@@ -44,6 +46,7 @@ class _SettingsScreenState extends ConsumerState<SettingsScreen> {
   Widget build(BuildContext context) {
     return DefaultTabController(
       length: 6,
+      initialIndex: widget.initialTab,
       child: Column(
         children: [
           Container(
@@ -276,17 +279,21 @@ class _SettingsScreenState extends ConsumerState<SettingsScreen> {
                             children: WriteGuard.isReadonly(ref)
                                 ? const []
                                 : [
-                              TextButton(
-                                onPressed: () =>
-                                    _showEditUserDialog(context, u),
-                                child: const Text('编辑',
-                                    style: TextStyle(fontSize: 12)),
+                              WriteGuard(
+                                child: TextButton(
+                                  onPressed: () =>
+                                      _showEditUserDialog(context, u),
+                                  child: const Text('编辑',
+                                      style: TextStyle(fontSize: 12)),
+                                ),
                               ),
-                              TextButton(
-                                onPressed: () =>
-                                    _showResetPasswordDialog(context, u),
-                                child: const Text('重置密码',
-                                    style: TextStyle(fontSize: 12)),
+                              WriteGuard(
+                                child: TextButton(
+                                  onPressed: () =>
+                                      _showResetPasswordDialog(context, u),
+                                  child: const Text('重置密码',
+                                      style: TextStyle(fontSize: 12)),
+                                ),
                               ),
                             ],
                           )),
@@ -326,6 +333,9 @@ class _SettingsScreenState extends ConsumerState<SettingsScreen> {
             ),
           ),
           const SizedBox(height: 16),
+          // 过期降级说明
+          _buildExpiryNotes(),
+          const SizedBox(height: 16),
           // 激活码输入区
           _buildActivationCard(),
         ],
@@ -349,24 +359,8 @@ class _SettingsScreenState extends ConsumerState<SettingsScreen> {
       );
     }
 
-    Color phaseColor;
-    String phaseText;
-    switch (lic.phase) {
-      case 'grace':
-        phaseColor = Colors.orange;
-        phaseText = '宽限期（剩余 ${lic.daysRemaining ?? 0} 天到期）';
-      case 'readonly':
-        phaseColor = AppTheme.danger;
-        phaseText = '已过期 · 只读模式';
-      case 'locked':
-        phaseColor = AppTheme.danger;
-        phaseText = '已锁定 · 请立即续费';
-      default:
-        phaseColor = AppTheme.success;
-        phaseText = lic.expiresAt == null
-            ? '正常（永久授权）'
-            : '正常（剩余 ${lic.daysRemaining ?? 0} 天）';
-    }
+    final Color phaseColor = LicenseCopy.phaseColor(lic.phase);
+    final String phaseText = LicenseCopy.statusText(lic);
 
     return Column(
       crossAxisAlignment: CrossAxisAlignment.start,
@@ -407,6 +401,53 @@ class _SettingsScreenState extends ConsumerState<SettingsScreen> {
     );
   }
 
+  Widget _buildExpiryNotes() {
+    return Card(
+      child: Padding(
+        padding: const EdgeInsets.all(20),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Row(
+              children: const [
+                Icon(Icons.info_outline,
+                    size: 16, color: AppTheme.textSecondary),
+                SizedBox(width: 6),
+                Text('过期说明',
+                    style:
+                        TextStyle(fontSize: 14, fontWeight: FontWeight.w600)),
+              ],
+            ),
+            const SizedBox(height: 4),
+            const Text('授权到期后会分阶段降级，请在到期前及时续费',
+                style:
+                    TextStyle(fontSize: 13, color: AppTheme.textSecondary)),
+            const SizedBox(height: 12),
+            for (final note in LicenseCopy.degradationNotes())
+              Padding(
+                padding: const EdgeInsets.symmetric(vertical: 4),
+                child: Row(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    const Padding(
+                      padding: EdgeInsets.only(top: 6, right: 8),
+                      child: Icon(Icons.circle,
+                          size: 5, color: AppTheme.textSecondary),
+                    ),
+                    Expanded(
+                      child: Text(note,
+                          style: const TextStyle(
+                              fontSize: 13, height: 1.5)),
+                    ),
+                  ],
+                ),
+              ),
+          ],
+        ),
+      ),
+    );
+  }
+
   Widget _buildActivationCard() {
     return Card(
       child: Padding(
@@ -789,6 +830,19 @@ class _SettingsScreenState extends ConsumerState<SettingsScreen> {
             style: TextStyle(color: AppTheme.textSecondary)),
       );
     }
+    if (WriteGuard.licenseBlocked(ref)) {
+      final lic = ref.watch(licenseProvider).valueOrNull;
+      return Center(
+        child: Padding(
+          padding: const EdgeInsets.all(24),
+          child: Text(
+            lic == null ? '授权已过期，暂时无法导入' : LicenseCopy.writeBlockedToast(lic),
+            textAlign: TextAlign.center,
+            style: const TextStyle(color: AppTheme.textSecondary),
+          ),
+        ),
+      );
+    }
     final currentUser = ref.watch(authStateProvider).user;
     final isSuperAdmin = currentUser?.role == 'superadmin';
     return _BatchImportWidget(isSuperAdmin: isSuperAdmin);
diff --git a/client/lib/screens/shell/app_shell.dart b/client/lib/screens/shell/app_shell.dart
index d77925d..b20eb39 100644
--- a/client/lib/screens/shell/app_shell.dart
+++ b/client/lib/screens/shell/app_shell.dart
@@ -8,6 +8,7 @@ import 'package:flutter/foundation.dart' show kIsWeb;
 import '../../core/auth/auth_state.dart';
 import '../../widgets/write_guard.dart';
 import '../../core/config/app_config.dart';
+import '../../core/config/license_copy.dart';
 import '../../core/responsive/responsive.dart';
 import '../../core/theme/app_theme.dart';
 import '../../providers/connectivity_provider.dart';
@@ -170,6 +171,14 @@ class _AppShellState extends ConsumerState<AppShell> {
     final user = ref.watch(authStateProvider).user;
     // 登录态心跳：随 shell 挂载存活，~30s 一次，感知被踢下线
     ref.watch(sessionHeartbeatProvider);
+    // 全局轻提示（写请求被后端 403 拒绝等）：统一在此弹出并清空。
+    ref.listen<String?>(apiMessageProvider, (prev, next) {
+      if (next == null || next.isEmpty) return;
+      ScaffoldMessenger.of(context)
+        ..clearSnackBars()
+        ..showSnackBar(SnackBar(content: Text(next)));
+      ref.read(apiMessageProvider.notifier).state = null;
+    });
     final isOnline = ref.watch(connectivityProvider);
     final location = GoRouterState.of(context).matchedLocation;
     final isMobile = context.isMobile;
@@ -538,6 +547,8 @@ class _AppShellState extends ConsumerState<AppShell> {
                                             .valueOrNull ??
                                         'v1.0.0',
                                     iconOnly: iconOnly),
+                                _LicenseStatusItem(
+                                    lic: licenseInfo, iconOnly: iconOnly),
                               ],
                             ),
                           );
@@ -556,19 +567,8 @@ class _AppShellState extends ConsumerState<AppShell> {
   }
 
   Widget _buildLicenseBanner(LicenseInfo lic) {
-    final Color bg;
-    final String msg;
-    switch (lic.phase) {
-      case 'locked':
-        bg = AppTheme.danger;
-        msg = '授权已锁定，所有写操作已停用 — 请立即续费或激活新授权码';
-      case 'readonly':
-        bg = const Color(0xFFB71C1C);
-        msg = '授权已过期，当前为只读模式（剩余宽限期 ${lic.daysRemaining ?? 0} 天后彻底锁定）';
-      default: // grace
-        bg = const Color(0xFFE65100);
-        msg = '授权将于 ${lic.daysRemaining ?? 0} 天后到期，请及时续费';
-    }
+    final bg = LicenseCopy.bannerColor(lic.phase);
+    final msg = LicenseCopy.banner(lic);
     return Container(
       width: double.infinity,
       color: bg,
@@ -584,7 +584,7 @@ class _AppShellState extends ConsumerState<AppShell> {
                 overflow: TextOverflow.ellipsis),
           ),
           TextButton(
-            onPressed: () => context.go('/settings'),
+            onPressed: () => context.go('/settings?tab=license'),
             style: TextButton.styleFrom(foregroundColor: Colors.white70),
             child: const Text('去激活'),
           ),
@@ -594,23 +594,9 @@ class _AppShellState extends ConsumerState<AppShell> {
   }
 
   void _showLicenseExpiryDialog(BuildContext ctx, LicenseInfo lic) {
-    final String title;
-    final String body;
-    final Color titleColor;
-    switch (lic.phase) {
-      case 'locked':
-        title = '授权已锁定';
-        body = '您的授权已到期超过 15 天，所有写操作已停用。\n请前往「设置 → 授权」激活新的授权码，或联系客服续费。';
-        titleColor = AppTheme.danger;
-      case 'readonly':
-        title = '授权已过期 · 只读模式';
-        body = '您的授权已过期，系统进入只读模式，无法执行任何写操作。\n到期 15 天后将彻底锁定登录，请尽快续费。';
-        titleColor = AppTheme.danger;
-      default: // grace
-        title = '授权即将到期';
-        body = '您的授权将在 ${lic.daysRemaining ?? 0} 天后到期，到期后系统进入只读模式。\n请提前联系客服续费，避免影响正常使用。';
-        titleColor = Colors.orange[800]!;
-    }
+    final (title, body) = LicenseCopy.dialog(lic);
+    final Color titleColor =
+        lic.phase == 'grace' ? Colors.orange[800]! : AppTheme.danger;
     showDialog(
       context: ctx,
       barrierDismissible: true,
@@ -630,7 +616,7 @@ class _AppShellState extends ConsumerState<AppShell> {
             style: ElevatedButton.styleFrom(backgroundColor: titleColor),
             onPressed: () {
               Navigator.pop(_);
-              ctx.go('/settings');
+              ctx.go('/settings?tab=license');
             },
             child: const Text('立即前往', style: TextStyle(color: Colors.white)),
           ),
@@ -743,6 +729,43 @@ class _StatusItem extends StatelessWidget {
   }
 }
 
+/// 状态栏「授权到期」项：按到期后时长分三级，用颜色 + 文案区分。
+/// 没到期 → 正常（绿）；过期 ≤7 天（宽限期）→ 警告（橙）；过期 >7 天 → error（红）。
+/// 对应后端 phase：normal / grace / readonly|locked。
+class _LicenseStatusItem extends StatelessWidget {
+  final LicenseInfo? lic;
+  final bool iconOnly;
+  const _LicenseStatusItem({required this.lic, this.iconOnly = false});
+
+  @override
+  Widget build(BuildContext context) {
+    final lic = this.lic;
+    if (lic == null) return const SizedBox.shrink();
+
+    final color = LicenseCopy.phaseColor(lic.phase);
+    final icon = LicenseCopy.phaseIcon(lic.phase);
+
+    final String date = lic.expiresAt == null
+        ? ''
+        : DateFormat('yyyy-MM-dd').format(lic.expiresAt!);
+    final String text = LicenseCopy.statusBar(lic, date);
+
+    return Row(
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        const _StatusDivider(),
+        Icon(icon, size: 11, color: color),
+        if (!iconOnly) ...[
+          const SizedBox(width: 4),
+          Text(text,
+              style: TextStyle(
+                  color: color, fontSize: 11, fontWeight: FontWeight.w600)),
+        ],
+      ],
+    );
+  }
+}
+
 class _StatusDivider extends StatelessWidget {
   const _StatusDivider();
   @override
diff --git a/client/lib/screens/stock_in/stock_in_list_screen.dart b/client/lib/screens/stock_in/stock_in_list_screen.dart
index 94845b1..741f65d 100644
--- a/client/lib/screens/stock_in/stock_in_list_screen.dart
+++ b/client/lib/screens/stock_in/stock_in_list_screen.dart
@@ -24,6 +24,7 @@ import '../../repositories/product_repository.dart';
 import '../../providers/finance_provider.dart' show financeRepositoryProvider;
 import '../../providers/shop_provider.dart' show shopInfoProvider;
 import '../../widgets/write_guard.dart';
+import '../../widgets/order_row_actions.dart';
 
 class StockInListScreen extends ConsumerStatefulWidget {
   const StockInListScreen({super.key});
@@ -306,18 +307,20 @@ class _StockInListScreenState extends ConsumerState<StockInListScreen> {
             );
 
         final newBtn = (showNewButton && !WriteGuard.isReadonly(ref))
-            ? ElevatedButton.icon(
-                onPressed: () => context.go('/stock-in/new'),
-                icon: const Icon(Icons.add, size: 16),
-                label: Text(isMobile ? '新建' : '新建入库审核单'),
-                style: isMobile
-                    ? ElevatedButton.styleFrom(
-                        padding: const EdgeInsets.symmetric(
-                            horizontal: 10, vertical: 6),
-                        minimumSize: Size.zero,
-                        tapTargetSize: MaterialTapTargetSize.shrinkWrap,
-                      )
-                    : null,
+            ? WriteGuard(
+                child: ElevatedButton.icon(
+                  onPressed: () => context.go('/stock-in/new'),
+                  icon: const Icon(Icons.add, size: 16),
+                  label: Text(isMobile ? '新建' : '新建入库审核单'),
+                  style: isMobile
+                      ? ElevatedButton.styleFrom(
+                          padding: const EdgeInsets.symmetric(
+                              horizontal: 10, vertical: 6),
+                          minimumSize: Size.zero,
+                          tapTargetSize: MaterialTapTargetSize.shrinkWrap,
+                        )
+                      : null,
+                ),
               )
             : null;
 
@@ -417,93 +420,59 @@ class _StockInListScreenState extends ConsumerState<StockInListScreen> {
     );
   }
 
-  /// 操作按钮列表，表格与移动端卡片共用。
+  /// 操作按钮列表，表格与移动端卡片共用。结构见 [buildOrderRowActions]，
+  /// 入库特有的「打标签」通过 afterPrint 注入。
   List<Widget> _orderActions(BuildContext context, StockInOrder o) {
-    final readonly = WriteGuard.isReadonly(ref);
-    return [
-      TextButton(
-        onPressed: () => _showDetail(context, o.id),
-        child: const Text('详情',
-            style: TextStyle(fontSize: 12, color: AppTheme.primary)),
-      ),
-      TextButton(
-        onPressed: () async {
-          final order = await ref.read(stockInRepositoryProvider).get(o.id);
-          if (context.mounted) {
-            await safePrint(context, () => printStockInOrder(order));
-          }
-        },
-        child: const Text('打印',
-            style: TextStyle(fontSize: 12, color: AppTheme.primary)),
-      ),
-      TextButton(
-        onPressed: () async {
-          final order = await ref.read(stockInRepositoryProvider).get(o.id);
-          if (!context.mounted) return;
-          final shopInfo = ref.read(shopInfoProvider).valueOrNull;
-          final labels = order.items
-              .map((item) => LabelData(
-                    productId: item.productId,
-                    name: item.productName ?? '',
-                    code: item.productCode ?? '',
-                    series: item.productSeries,
-                    spec: item.productSpec,
-                    batchNo: item.batchNo,
-                    productionDate: item.productionDate,
-                    shopName: shopInfo?.name ?? '',
-                    shopAddress: shopInfo?.address ?? '',
-                    shopPhone: shopInfo?.phone ?? '',
-                  ))
-              .toList();
-          showAppDialog(
-            context: context,
-            builder: (_) => LabelPreviewDialog(
-              labels: labels,
-              qrFetcher: ref.read(productRepositoryProvider).getQRCodeBytes,
-            ),
-          );
-        },
-        child: const Text('打标签',
-            style: TextStyle(fontSize: 12, color: AppTheme.primary)),
-      ),
-      if (!readonly && o.status == 'approved')
+    return buildOrderRowActions(
+      readonly: WriteGuard.isReadonly(ref),
+      status: o.status,
+      orderId: o.id,
+      onDetail: () => _showDetail(context, o.id),
+      onPrint: () async {
+        final order = await ref.read(stockInRepositoryProvider).get(o.id);
+        if (context.mounted) {
+          await safePrint(context, () => printStockInOrder(order));
+        }
+      },
+      afterPrint: [
         TextButton(
-          onPressed: () => _confirmSettle(context, o.id, 'stock_in'),
-          child: const Text('结清',
-              style: TextStyle(fontSize: 12, color: AppTheme.accent)),
-        ),
-      if (!readonly && o.status == 'draft') ...[
-        TextButton(
-          onPressed: () => context.go('/stock-in/edit/${o.id}'),
-          child: const Text('修改',
-              style: TextStyle(fontSize: 12, color: AppTheme.primary)),
-        ),
-        TextButton(
-          onPressed: () => _confirmDelete(context, o),
-          child: const Text('删除',
-              style: TextStyle(fontSize: 12, color: AppTheme.danger)),
-        ),
-        TextButton(
-          onPressed: () => _confirmSubmit(context, o),
-          child: const Text('提交',
+          onPressed: () async {
+            final order = await ref.read(stockInRepositoryProvider).get(o.id);
+            if (!context.mounted) return;
+            final shopInfo = ref.read(shopInfoProvider).valueOrNull;
+            final labels = order.items
+                .map((item) => LabelData(
+                      productId: item.productId,
+                      name: item.productName ?? '',
+                      code: item.productCode ?? '',
+                      series: item.productSeries,
+                      spec: item.productSpec,
+                      batchNo: item.batchNo,
+                      productionDate: item.productionDate,
+                      shopName: shopInfo?.name ?? '',
+                      shopAddress: shopInfo?.address ?? '',
+                      shopPhone: shopInfo?.phone ?? '',
+                    ))
+                .toList();
+            showAppDialog(
+              context: context,
+              builder: (_) => LabelPreviewDialog(
+                labels: labels,
+                qrFetcher: ref.read(productRepositoryProvider).getQRCodeBytes,
+              ),
+            );
+          },
+          child: const Text('打标签',
               style: TextStyle(fontSize: 12, color: AppTheme.primary)),
         ),
       ],
-      if (!readonly && o.status == 'pending') ...[
-        TextButton(
-          key: Key('btn_approve_${o.id}'),
-          onPressed: () => _confirmApprove(context, o),
-          child: const Text('通过',
-              style: TextStyle(fontSize: 12, color: AppTheme.success)),
-        ),
-        TextButton(
-          key: Key('btn_reject_${o.id}'),
-          onPressed: () => _confirmReject(context, o),
-          child: const Text('拒绝',
-              style: TextStyle(fontSize: 12, color: AppTheme.danger)),
-        ),
-      ],
-    ];
+      onSettle: () => _confirmSettle(context, o.id, 'stock_in'),
+      onEdit: () => context.go('/stock-in/edit/${o.id}'),
+      onDelete: () => _confirmDelete(context, o),
+      onSubmit: () => _confirmSubmit(context, o),
+      onApprove: () => _confirmApprove(context, o),
+      onReject: () => _confirmReject(context, o),
+    );
   }
 
   /// 入库单：窄屏卡片
diff --git a/client/lib/screens/stock_out/stock_out_list_screen.dart b/client/lib/screens/stock_out/stock_out_list_screen.dart
index ef55a58..b8bd232 100644
--- a/client/lib/screens/stock_out/stock_out_list_screen.dart
+++ b/client/lib/screens/stock_out/stock_out_list_screen.dart
@@ -22,6 +22,7 @@ import '../../providers/tab_state_provider.dart';
 import '../../providers/product_provider.dart';
 import '../../providers/finance_provider.dart' show financeRepositoryProvider;
 import '../../widgets/write_guard.dart';
+import '../../widgets/order_row_actions.dart';
 
 class StockOutListScreen extends ConsumerStatefulWidget {
   const StockOutListScreen({super.key});
@@ -312,18 +313,20 @@ class _StockOutListScreenState extends ConsumerState<StockOutListScreen> {
             );
 
         final newBtn = (showNewButton && !WriteGuard.isReadonly(ref))
-            ? ElevatedButton.icon(
-                onPressed: () => context.go('/stock-out/new'),
-                icon: const Icon(Icons.add, size: 16),
-                label: Text(isMobile ? '新建' : '新建出库审核单'),
-                style: isMobile
-                    ? ElevatedButton.styleFrom(
-                        padding: const EdgeInsets.symmetric(
-                            horizontal: 10, vertical: 6),
-                        minimumSize: Size.zero,
-                        tapTargetSize: MaterialTapTargetSize.shrinkWrap,
-                      )
-                    : null,
+            ? WriteGuard(
+                child: ElevatedButton.icon(
+                  onPressed: () => context.go('/stock-out/new'),
+                  icon: const Icon(Icons.add, size: 16),
+                  label: Text(isMobile ? '新建' : '新建出库审核单'),
+                  style: isMobile
+                      ? ElevatedButton.styleFrom(
+                          padding: const EdgeInsets.symmetric(
+                              horizontal: 10, vertical: 6),
+                          minimumSize: Size.zero,
+                          tapTargetSize: MaterialTapTargetSize.shrinkWrap,
+                        )
+                      : null,
+                ),
               )
             : null;
 
@@ -425,61 +428,24 @@ class _StockOutListScreenState extends ConsumerState<StockOutListScreen> {
 
   /// 操作按钮列表，表格与移动端卡片共用。
   List<Widget> _orderActions(BuildContext context, StockOutOrder o) {
-    final readonly = WriteGuard.isReadonly(ref);
-    return [
-      TextButton(
-        onPressed: () => _showDetail(context, o.id),
-        child: const Text('详情',
-            style: TextStyle(fontSize: 12, color: AppTheme.primary)),
-      ),
-      TextButton(
-        onPressed: () async {
-          final order = await ref.read(stockOutRepositoryProvider).get(o.id);
-          if (context.mounted) {
-            await safePrint(context, () => printStockOutOrder(order));
-          }
-        },
-        child: const Text('打印',
-            style: TextStyle(fontSize: 12, color: AppTheme.primary)),
-      ),
-      if (!readonly && o.status == 'approved')
-        TextButton(
-          onPressed: () => _confirmSettle(context, o.id, 'stock_out'),
-          child: const Text('结清',
-              style: TextStyle(fontSize: 12, color: AppTheme.accent)),
-        ),
-      if (!readonly && o.status == 'draft') ...[
-        TextButton(
-          onPressed: () => context.go('/stock-out/edit/${o.id}'),
-          child: const Text('修改',
-              style: TextStyle(fontSize: 12, color: AppTheme.primary)),
-        ),
-        TextButton(
-          onPressed: () => _confirmDelete(context, o),
-          child: const Text('删除',
-              style: TextStyle(fontSize: 12, color: AppTheme.danger)),
-        ),
-        TextButton(
-          onPressed: () => _confirmSubmit(context, o),
-          child: const Text('提交',
-              style: TextStyle(fontSize: 12, color: AppTheme.primary)),
-        ),
-      ],
-      if (!readonly && o.status == 'pending') ...[
-        TextButton(
-          key: Key('btn_approve_${o.id}'),
-          onPressed: () => _confirmApprove(context, o),
-          child: const Text('通过',
-              style: TextStyle(fontSize: 12, color: AppTheme.success)),
-        ),
-        TextButton(
-          key: Key('btn_reject_${o.id}'),
-          onPressed: () => _confirmReject(context, o),
-          child: const Text('拒绝',
-              style: TextStyle(fontSize: 12, color: AppTheme.danger)),
-        ),
-      ],
-    ];
+    return buildOrderRowActions(
+      readonly: WriteGuard.isReadonly(ref),
+      status: o.status,
+      orderId: o.id,
+      onDetail: () => _showDetail(context, o.id),
+      onPrint: () async {
+        final order = await ref.read(stockOutRepositoryProvider).get(o.id);
+        if (context.mounted) {
+          await safePrint(context, () => printStockOutOrder(order));
+        }
+      },
+      onSettle: () => _confirmSettle(context, o.id, 'stock_out'),
+      onEdit: () => context.go('/stock-out/edit/${o.id}'),
+      onDelete: () => _confirmDelete(context, o),
+      onSubmit: () => _confirmSubmit(context, o),
+      onApprove: () => _confirmApprove(context, o),
+      onReject: () => _confirmReject(context, o),
+    );
   }
 
   /// 出库单：窄屏卡片
diff --git a/client/lib/widgets/order_row_actions.dart b/client/lib/widgets/order_row_actions.dart
new file mode 100644
index 0000000..cb57197
--- /dev/null
+++ b/client/lib/widgets/order_row_actions.dart
@@ -0,0 +1,54 @@
+import 'package:flutter/material.dart';
+
+import '../core/theme/app_theme.dart';
+import 'write_guard.dart';
+
+/// 入/出库单行内操作按钮，列表表格与移动端卡片、入库与出库两屏共用。
+///
+/// 此前 stock_in / stock_out 各自逐字重复了「详情/打印/结清/修改/删除/提交/通过/拒绝」
+/// 的状态门控（draft/pending/approved）与 WriteGuard 包裹脚手架，仅单据类型、路由、
+/// 打印函数与回调不同。这里把**相同的结构**收敛到单一来源，差异通过回调注入：
+///
+///   - [afterPrint]：紧随「打印」之后的附加按钮（入库的「打标签」；出库传空）。
+///   - 各 `on*` 回调由调用方绑定到对应单据的确认/跳转逻辑。
+List<Widget> buildOrderRowActions({
+  required bool readonly,
+  required String status,
+  required int orderId,
+  required VoidCallback onDetail,
+  required VoidCallback onPrint,
+  required VoidCallback onSettle,
+  required VoidCallback onEdit,
+  required VoidCallback onDelete,
+  required VoidCallback onSubmit,
+  required VoidCallback onApprove,
+  required VoidCallback onReject,
+  List<Widget> afterPrint = const [],
+}) {
+  TextButton btn(String text, Color color, VoidCallback onPressed, {Key? key}) =>
+      TextButton(
+        key: key,
+        onPressed: onPressed,
+        child: Text(text, style: TextStyle(fontSize: 12, color: color)),
+      );
+  return [
+    btn('详情', AppTheme.primary, onDetail),
+    btn('打印', AppTheme.primary, onPrint),
+    ...afterPrint,
+    if (!readonly && status == 'approved')
+      WriteGuard(child: btn('结清', AppTheme.accent, onSettle)),
+    if (!readonly && status == 'draft') ...[
+      WriteGuard(child: btn('修改', AppTheme.primary, onEdit)),
+      WriteGuard(child: btn('删除', AppTheme.danger, onDelete)),
+      WriteGuard(child: btn('提交', AppTheme.primary, onSubmit)),
+    ],
+    if (!readonly && status == 'pending') ...[
+      WriteGuard(
+          child: btn('通过', AppTheme.success, onApprove,
+              key: Key('btn_approve_$orderId'))),
+      WriteGuard(
+          child: btn('拒绝', AppTheme.danger, onReject,
+              key: Key('btn_reject_$orderId'))),
+    ],
+  ];
+}
diff --git a/client/lib/widgets/write_guard.dart b/client/lib/widgets/write_guard.dart
index 1d11ccd..829aa09 100644
--- a/client/lib/widgets/write_guard.dart
+++ b/client/lib/widgets/write_guard.dart
@@ -1,26 +1,34 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import '../core/auth/auth_state.dart';
+import '../core/config/license_copy.dart';
+import '../providers/license_provider.dart';
 
-/// 写操作守卫：当前登录用户为只读角色（role == 'readonly'）时，
-/// 隐藏被包裹的写操作控件（新增/编辑/删除/审核/提交/结清/导入…）。
+/// 写操作守卫：按「角色只读」和「授权过期」两种受限场景**区分处理**被包裹的写控件
+/// （新增/编辑/删除/审核/提交/结清/导入…）：
+///
+/// - **角色只读**（role == 'readonly'）→ 隐藏（不显示）。
+/// - **授权过期 >7 天**（phase == 'readonly' | 'locked'）→ 显示但置灰禁用，
+///   点击弹提示说明原因并引导去激活。
+/// - **其它**（normal / grace 宽限期）→ 原样显示且可点（宽限期后端仍允许写）。
 ///
 /// 统一入口，避免在各页面散落 `if (!ref.watch(isReadonlyProvider))` 判断。
-/// 后端 `middleware.ReadOnly()` 仍会对只读用户的写请求兜底返回 403，
-/// 本控件只负责「不让按钮出现」，二者配合：UI 不误导 + 后端不可绕过。
+/// 后端 `middleware.ReadOnly()` / `LicenseGuard()` 仍会对写请求兜底返回 403，
+/// 本控件只负责「不误导」：只读不显示、过期显示但不可点。
 ///
 /// 用法：
 /// ```dart
 /// WriteGuard(child: ElevatedButton(onPressed: _add, child: const Text('新建')))
 /// ```
-/// 列表 children 里可用 [hidden] 配合 collection-if 直接剔除分隔符：
+/// 列表 children 里可用 collection-if 配合 [isReadonly] 直接剔除分隔符；
+/// 过期置灰仍由内层 [WriteGuard] 负责：
 /// ```dart
-/// if (!WriteGuard.isReadonly(ref)) ...[button, const SizedBox(width: 8)]
+/// if (!WriteGuard.isReadonly(ref)) ...[WriteGuard(child: button), const SizedBox(width: 8)]
 /// ```
 class WriteGuard extends ConsumerWidget {
   final Widget child;
 
-  /// 只读时显示的占位控件，默认完全隐藏（不占位）。
+  /// 只读角色时显示的占位控件，默认完全隐藏（不占位）。
   final Widget placeholder;
 
   const WriteGuard({
@@ -29,11 +37,58 @@ class WriteGuard extends ConsumerWidget {
     this.placeholder = const SizedBox.shrink(),
   });
 
-  /// 供需要在 collection-if / 复合条件中判断的场景直接调用。
+  /// 当前是否只读角色（写按钮应**隐藏**）。供 collection-if / 复合条件直接调用。
   static bool isReadonly(WidgetRef ref) => ref.watch(isReadonlyProvider);
 
+  /// 当前是否因授权过期 >7 天而应**禁用**写操作（phase readonly/locked）。
+  static bool licenseBlocked(WidgetRef ref) {
+    final lic = ref.watch(licenseProvider).valueOrNull;
+    return lic != null && lic.isReadOnlyPhase;
+  }
+
   @override
   Widget build(BuildContext context, WidgetRef ref) {
-    return ref.watch(isReadonlyProvider) ? placeholder : child;
+    // 1) 角色只读：隐藏
+    if (ref.watch(isReadonlyProvider)) return placeholder;
+
+    // 2) 授权过期 >7 天：显示但置灰禁用 + 点击弹提示
+    final lic = ref.watch(licenseProvider).valueOrNull;
+    if (lic != null && lic.isReadOnlyPhase) {
+      return _DisabledByLicense(lic: lic, child: child);
+    }
+
+    // 3) normal / grace：原样可点
+    return child;
+  }
+}
+
+/// 授权过期态的写控件包装：视觉置灰 + 拦截点击并提示。
+class _DisabledByLicense extends StatelessWidget {
+  final LicenseInfo lic;
+  final Widget child;
+  const _DisabledByLicense({required this.lic, required this.child});
+
+  @override
+  Widget build(BuildContext context) {
+    return Stack(
+      children: [
+        // 置灰且不响应子控件自身的点击
+        IgnorePointer(child: Opacity(opacity: 0.45, child: child)),
+        // 覆盖一层透明手势层：捕获点击弹出原因说明
+        Positioned.fill(
+          child: GestureDetector(
+            behavior: HitTestBehavior.opaque,
+            onTap: () {
+              final messenger = ScaffoldMessenger.maybeOf(context);
+              messenger
+                ?..clearSnackBars()
+                ..showSnackBar(
+                  SnackBar(content: Text(LicenseCopy.writeBlockedToast(lic))),
+                );
+            },
+          ),
+        ),
+      ],
+    );
   }
 }
diff --git a/client/test/api_forbidden_flow_test.dart b/client/test/api_forbidden_flow_test.dart
new file mode 100644
index 0000000..c1bcace
--- /dev/null
+++ b/client/test/api_forbidden_flow_test.dart
@@ -0,0 +1,83 @@
+import 'package:dio/dio.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:http_mock_adapter/http_mock_adapter.dart';
+import 'package:jiu_client/core/api/api_client.dart';
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  group('ApiClient 403 拦截 → onForbidden 回调', () {
+    test('写请求收到 403 时，onForbidden 收到响应体（code=READONLY_USER）', () async {
+      dynamic captured;
+      final client = ApiClient(
+        token: 'test-token',
+        onForbidden: (body) => captured = body,
+      );
+      final adapter = DioAdapter(
+        dio: client.dioForTest,
+        matcher: const FullHttpRequestMatcher(),
+      );
+      adapter.onPost(
+        '/products',
+        (server) => server.reply(403, {'error': 'readonly user', 'code': 'READONLY_USER'}),
+        data: {'name': '测试'},
+      );
+
+      await expectLater(
+        client.post('/products', data: {'name': '测试'}),
+        throwsA(isA<DioException>()),
+      );
+
+      expect(captured, isA<Map>());
+      expect(captured['code'], 'READONLY_USER');
+    });
+
+    test('授权过期 403（phase=readonly）时，onForbidden 收到 phase 字段', () async {
+      dynamic captured;
+      final client = ApiClient(
+        token: 'test-token',
+        onForbidden: (body) => captured = body,
+      );
+      final adapter = DioAdapter(
+        dio: client.dioForTest,
+        matcher: const FullHttpRequestMatcher(),
+      );
+      adapter.onPost(
+        '/stock-in',
+        (server) => server.reply(403, {'error': 'license expired', 'phase': 'readonly'}),
+        data: {'x': 1},
+      );
+
+      await expectLater(
+        client.post('/stock-in', data: {'x': 1}),
+        throwsA(isA<DioException>()),
+      );
+
+      expect(captured, isA<Map>());
+      expect(captured['phase'], 'readonly');
+    });
+
+    test('非 403 错误不触发 onForbidden', () async {
+      var called = false;
+      final client = ApiClient(
+        token: 'test-token',
+        onForbidden: (_) => called = true,
+      );
+      final adapter = DioAdapter(
+        dio: client.dioForTest,
+        matcher: const FullHttpRequestMatcher(),
+      );
+      adapter.onGet(
+        '/products',
+        (server) => server.reply(404, {'error': 'not found'}),
+      );
+
+      await expectLater(
+        client.get('/products'),
+        throwsA(isA<DioException>()),
+      );
+
+      expect(called, isFalse);
+    });
+  });
+}
diff --git a/client/test/license_copy_test.dart b/client/test/license_copy_test.dart
new file mode 100644
index 0000000..2f74dde
--- /dev/null
+++ b/client/test/license_copy_test.dart
@@ -0,0 +1,74 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:jiu_client/core/config/license_copy.dart';
+import 'package:jiu_client/models/license.dart';
+
+LicenseInfo _lic(String phase, {int expiredDays = 0, bool permanent = false}) =>
+    LicenseInfo(
+      id: 1,
+      type: 'annual',
+      isActive: true,
+      maxDevices: 3,
+      phase: phase,
+      expiresAt:
+          permanent ? null : DateTime.now().subtract(Duration(days: expiredDays)),
+    );
+
+void main() {
+  group('writeBlockedToast', () {
+    test('readonly 阶段文案含过期天数并引导续费', () {
+      final s = LicenseCopy.writeBlockedToast(_lic('readonly', expiredDays: 10));
+      expect(s, contains('10'));
+      expect(s, contains('只读'));
+      expect(s, contains('设置 → 授权'));
+    });
+
+    test('locked 阶段文案标注已锁定', () {
+      final s = LicenseCopy.writeBlockedToast(_lic('locked', expiredDays: 20));
+      expect(s, contains('20'));
+      expect(s, contains('锁定'));
+    });
+  });
+
+  group('banner', () {
+    test('normal 阶段返回空串', () {
+      expect(LicenseCopy.banner(_lic('normal', permanent: true)), isEmpty);
+    });
+
+    test('grace/readonly/locked 各阶段含过期天数', () {
+      expect(LicenseCopy.banner(_lic('grace', expiredDays: 2)), contains('2'));
+      expect(
+          LicenseCopy.banner(_lic('readonly', expiredDays: 9)), contains('只读'));
+      expect(
+          LicenseCopy.banner(_lic('locked', expiredDays: 30)), contains('锁定'));
+    });
+  });
+
+  group('statusText / statusBar', () {
+    test('normal 永久授权', () {
+      final lic = _lic('normal', permanent: true);
+      expect(LicenseCopy.statusText(lic), contains('永久'));
+      expect(LicenseCopy.statusBar(lic, '2099-01-01'), contains('永久'));
+    });
+
+    test('readonly 阶段标注只读', () {
+      final lic = _lic('readonly', expiredDays: 9);
+      expect(LicenseCopy.statusText(lic), contains('只读'));
+      expect(LicenseCopy.statusBar(lic, '2024-01-01'), contains('只读'));
+    });
+  });
+
+  group('degradationNotes', () {
+    test('三条说明随阈值联动（含 7 与 15）', () {
+      final notes = LicenseCopy.degradationNotes();
+      expect(notes.length, 3);
+      expect(notes.join(), contains('${LicenseCopy.graceDays}'));
+      expect(notes.join(), contains('${LicenseCopy.readonlyDays}'));
+    });
+  });
+
+  group('readonlyUserToast', () {
+    test('只读账号提示固定文案', () {
+      expect(LicenseCopy.readonlyUserToast, contains('只读'));
+    });
+  });
+}
diff --git a/client/test/partners_screen_test.dart b/client/test/partners_screen_test.dart
index f8677e4..a9a42f3 100644
--- a/client/test/partners_screen_test.dart
+++ b/client/test/partners_screen_test.dart
@@ -4,10 +4,25 @@ import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:jiu_client/core/models/page_result.dart';
+import 'package:jiu_client/models/license.dart';
 import 'package:jiu_client/models/partner.dart';
+import 'package:jiu_client/providers/license_provider.dart';
 import 'package:jiu_client/providers/partner_provider.dart';
 import 'package:jiu_client/screens/partners/partners_screen.dart';
 
+/// WriteGuard 内层会 watch licenseProvider；测试里覆写成同步返回 normal 授权，
+/// 避免触发真实网络请求（否则留下 pending timer 导致测试失败）。
+class _FakeLicenseNotifier extends LicenseNotifier {
+  @override
+  Future<LicenseInfo?> build() async => const LicenseInfo(
+        id: 1,
+        type: 'annual',
+        isActive: true,
+        maxDevices: 3,
+        phase: 'normal',
+      );
+}
+
 // ---------------------------------------------------------------------------
 // Fake notifier
 // ---------------------------------------------------------------------------
@@ -80,6 +95,7 @@ Widget _buildApp({
 }) {
   return ProviderScope(
     overrides: [
+      licenseProvider.overrideWith(() => _FakeLicenseNotifier()),
       supplierListProvider.overrideWith(
         () => _FakePartnerNotifier('supplier', supplierState),
       ),
@@ -94,6 +110,7 @@ Widget _buildApp({
 Widget _buildLoadingApp() {
   return ProviderScope(
     overrides: [
+      licenseProvider.overrideWith(() => _FakeLicenseNotifier()),
       supplierListProvider.overrideWith(
         () => _FakeLoadingPartnerNotifier('supplier'),
       ),
diff --git a/client/test/readonly_write_forbidden_test.dart b/client/test/readonly_write_forbidden_test.dart
index d12e17a..36f0022 100644
--- a/client/test/readonly_write_forbidden_test.dart
+++ b/client/test/readonly_write_forbidden_test.dart
@@ -1,69 +1,156 @@
+import 'package:dio/dio.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:flutter_test/flutter_test.dart';
-import 'package:jiu_client/core/exceptions.dart';
+import 'package:http_mock_adapter/http_mock_adapter.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:jiu_client/core/api/api_client.dart';
+import 'package:jiu_client/core/auth/auth_state.dart';
+import 'package:jiu_client/core/config/license_copy.dart';
 import 'package:jiu_client/core/models/page_result.dart';
-import 'package:jiu_client/models/product.dart';
-import 'package:jiu_client/providers/product_provider.dart';
-import 'package:jiu_client/screens/products/products_screen.dart';
+import 'package:jiu_client/models/license.dart';
+import 'package:jiu_client/models/partner.dart';
+import 'package:jiu_client/providers/license_provider.dart';
+import 'package:jiu_client/providers/partner_provider.dart';
+import 'package:jiu_client/screens/partners/partners_screen.dart';
+
+// 只读角色：写按钮（新建/编辑/删除）应被 WriteGuard 隐藏。
+// 替换原先因 ProductsScreen 重构而 skip 的旧用例，改测稳定的 PartnersScreen。
+
+class _FakePartnerNotifier extends PartnerListNotifier {
+  final AsyncValue<PageResult<Partner>> _fixed;
+  _FakePartnerNotifier(String type, this._fixed) : super(type: type);
 
-class _ReadonlyProductNotifier extends ProductListNotifier {
   @override
-  Future<PageResult<Product>> build() async {
-    return const PageResult(data: [], total: 0, page: 1, pageSize: 20);
+  Future<PageResult<Partner>> build() async {
+    state = _fixed;
+    return state.value ??
+        const PageResult(data: [], total: 0, page: 1, pageSize: 20);
   }
 
   @override
   void reload() {}
-
   @override
   void setKeyword(String keyword) {}
-
   @override
   void setPage(int page) {}
-
   @override
-  Future<void> createProduct(Map<String, dynamic> data) async {
-    throw const AppException('readonly user', statusCode: 403);
-  }
-
+  Future<void> createPartner(Map<String, dynamic> data) async {}
   @override
-  Future<void> updateProduct(int id, Map<String, dynamic> data) async {}
-
+  Future<void> updatePartner(int id, Map<String, dynamic> data) async {}
   @override
-  Future<void> deleteProduct(int id) async {}
+  Future<void> deletePartner(int id) async {}
+}
+
+class _FakeLicenseNotifier extends LicenseNotifier {
+  @override
+  Future<LicenseInfo?> build() async => const LicenseInfo(
+        id: 1,
+        type: 'annual',
+        isActive: true,
+        maxDevices: 3,
+        phase: 'normal',
+      );
+}
+
+const _suppliers = PageResult<Partner>(
+  data: [Partner(id: 1, code: 'S001', name: '茅台供应商', type: 'supplier')],
+  total: 1,
+  page: 1,
+  pageSize: 20,
+);
+
+Widget _buildApp({required bool readonly}) {
+  return ProviderScope(
+    overrides: [
+      isReadonlyProvider.overrideWithValue(readonly),
+      licenseProvider.overrideWith(() => _FakeLicenseNotifier()),
+      supplierListProvider.overrideWith(
+        () => _FakePartnerNotifier('supplier', const AsyncValue.data(_suppliers)),
+      ),
+      customerListProvider.overrideWith(
+        () => _FakePartnerNotifier(
+          'customer',
+          const AsyncValue.data(
+              PageResult(data: [], total: 0, page: 1, pageSize: 20)),
+        ),
+      ),
+    ],
+    child: const MaterialApp(home: Scaffold(body: PartnersScreen())),
+  );
 }
 
 void main() {
-  // TODO: 新建按钮位置已变更，测试待更新
-  testWidgets('write operation shows forbidden error for readonly user',
-      skip: true, (tester) async {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  // 仅隐藏按钮不够：只读账号若绕过 UI（或后端授权过期）直接提交写操作，
+  // 必须验证 403 真的被 apiClientProvider 的 onForbidden 捕获并浮出只读提示。
+  test('只读账号提交写操作：后端 403(READONLY_USER) 经 apiClientProvider 浮出只读提示',
+      () async {
+    SharedPreferences.setMockInitialValues({});
+    final container = ProviderContainer();
+    addTearDown(container.dispose);
+
+    // 登录一个只读账号，使 apiClientProvider 携带 token 并构建真实客户端。
+    await container.read(authStateProvider.notifier).login(const AuthUser(
+          accessToken: 'ro-token',
+          refreshToken: 'ro-refresh',
+          username: 'viewer',
+          realName: '只读用户',
+          shopNo: 'S001',
+          shopId: 1,
+          role: 'readonly',
+        ));
+
+    final client = container.read(apiClientProvider);
+    final adapter = DioAdapter(
+      dio: client.dioForTest,
+      matcher: const FullHttpRequestMatcher(),
+    );
+    adapter.onPost(
+      '/partners',
+      (server) =>
+          server.reply(403, {'error': 'readonly user', 'code': 'READONLY_USER'}),
+      data: {'name': '新供应商'},
+    );
+
+    // 写请求被后端拒绝。
+    await expectLater(
+      client.post('/partners', data: {'name': '新供应商'}),
+      throwsA(isA<DioException>()),
+    );
+
+    // provider 的 onForbidden 把只读提示浮到全局消息通道（用户可见的「403 浮出」）。
+    expect(container.read(apiMessageProvider), LicenseCopy.readonlyUserToast);
+  });
+
+  testWidgets('只读角色：新建/编辑/删除按钮全部隐藏', (tester) async {
     tester.view.physicalSize = const Size(1280, 800);
     tester.view.devicePixelRatio = 1.0;
     addTearDown(tester.view.resetPhysicalSize);
 
-    await tester.pumpWidget(
-      ProviderScope(
-        overrides: [
-          productListProvider.overrideWith(() => _ReadonlyProductNotifier()),
-        ],
-        child: const MaterialApp(
-          home: Scaffold(body: ProductsScreen()),
-        ),
-      ),
-    );
+    await tester.pumpWidget(_buildApp(readonly: true));
     await tester.pumpAndSettle();
 
-    await tester.tap(find.text('新建'));
+    // 供应商已渲染，证明列表确实加载。
+    expect(find.text('茅台供应商'), findsOneWidget);
+    // 写按钮被 WriteGuard 隐藏。
+    expect(find.text('新建'), findsNothing);
+    expect(find.byKey(const Key('btn_edit_1')), findsNothing);
+    expect(find.byKey(const Key('btn_delete_1')), findsNothing);
+  });
+
+  testWidgets('普通角色（normal 授权）：写按钮可见', (tester) async {
+    tester.view.physicalSize = const Size(1280, 800);
+    tester.view.devicePixelRatio = 1.0;
+    addTearDown(tester.view.resetPhysicalSize);
+
+    await tester.pumpWidget(_buildApp(readonly: false));
     await tester.pumpAndSettle();
 
-    await tester.enterText(find.byType(TextFormField).at(0), '测试商品');
-    await tester.enterText(find.byType(TextFormField).at(1), 'P999');
-
-    await tester.tap(find.text('保存'));
-    await tester.pump();
-    await tester.pumpAndSettle();
-
-    expect(find.textContaining('保存失败：readonly user'), findsOneWidget);
+    expect(find.text('茅台供应商'), findsOneWidget);
+    expect(find.text('新建'), findsWidgets);
+    expect(find.byKey(const Key('btn_edit_1')), findsOneWidget);
+    expect(find.byKey(const Key('btn_delete_1')), findsOneWidget);
   });
 }
diff --git a/client/test/stock_in_screen_test.dart b/client/test/stock_in_screen_test.dart
index fa94a39..46a7796 100644
--- a/client/test/stock_in_screen_test.dart
+++ b/client/test/stock_in_screen_test.dart
@@ -5,10 +5,24 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:go_router/go_router.dart';
 import 'package:jiu_client/core/models/page_result.dart';
+import 'package:jiu_client/models/license.dart';
 import 'package:jiu_client/models/stock_in.dart';
+import 'package:jiu_client/providers/license_provider.dart';
 import 'package:jiu_client/providers/stock_in_provider.dart';
 import 'package:jiu_client/screens/stock_in/stock_in_list_screen.dart';
 
+/// WriteGuard 内层会 watch licenseProvider；覆写成同步 normal 授权，避免真实网络请求。
+class _FakeLicenseNotifier extends LicenseNotifier {
+  @override
+  Future<LicenseInfo?> build() async => const LicenseInfo(
+        id: 1,
+        type: 'annual',
+        isActive: true,
+        maxDevices: 3,
+        phase: 'normal',
+      );
+}
+
 // ---------------------------------------------------------------------------
 // Fake notifier
 // ---------------------------------------------------------------------------
@@ -102,6 +116,7 @@ Widget _buildApp(AsyncValue<PageResult<StockInOrder>> state) {
 
   return ProviderScope(
     overrides: [
+      licenseProvider.overrideWith(() => _FakeLicenseNotifier()),
       stockInListProvider.overrideWith(() => _FakeStockInNotifier(state)),
     ],
     child: MaterialApp.router(routerConfig: router),
@@ -125,6 +140,7 @@ Widget _buildLoadingApp() {
 
   return ProviderScope(
     overrides: [
+      licenseProvider.overrideWith(() => _FakeLicenseNotifier()),
       stockInListProvider.overrideWith(() => _FakeLoadingStockInNotifier()),
     ],
     child: MaterialApp.router(routerConfig: router),
diff --git a/client/test/write_guard_test.dart b/client/test/write_guard_test.dart
new file mode 100644
index 0000000..ef0a25e
--- /dev/null
+++ b/client/test/write_guard_test.dart
@@ -0,0 +1,132 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:jiu_client/core/auth/auth_state.dart';
+import 'package:jiu_client/core/config/license_copy.dart';
+import 'package:jiu_client/models/license.dart';
+import 'package:jiu_client/providers/license_provider.dart';
+import 'package:jiu_client/widgets/write_guard.dart';
+
+/// 用固定 LicenseInfo（含指定 phase）填充 licenseProvider 的 Fake Notifier。
+class _FakeLicenseNotifier extends LicenseNotifier {
+  final LicenseInfo? _value;
+  _FakeLicenseNotifier(this._value);
+
+  @override
+  Future<LicenseInfo?> build() async => _value;
+}
+
+LicenseInfo _lic(String phase, {int expiredDays = 0}) => LicenseInfo(
+      id: 1,
+      type: 'annual',
+      isActive: true,
+      maxDevices: 3,
+      phase: phase,
+      expiresAt: DateTime.now().subtract(Duration(days: expiredDays)),
+    );
+
+/// 把一个带 onPressed 的按钮包进 WriteGuard，按 role + license phase 覆写 provider。
+Widget _harness({
+  required bool readonly,
+  LicenseInfo? lic,
+  required VoidCallback onPressed,
+}) {
+  return ProviderScope(
+    overrides: [
+      isReadonlyProvider.overrideWithValue(readonly),
+      licenseProvider.overrideWith(() => _FakeLicenseNotifier(lic)),
+    ],
+    child: MaterialApp(
+      home: Scaffold(
+        body: WriteGuard(
+          child: ElevatedButton(
+            onPressed: onPressed,
+            child: const Text('新建'),
+          ),
+        ),
+      ),
+    ),
+  );
+}
+
+void main() {
+  testWidgets('只读角色：按钮隐藏（findsNothing）', (tester) async {
+    var tapped = false;
+    await tester.pumpWidget(
+      _harness(readonly: true, lic: _lic('normal'), onPressed: () => tapped = true),
+    );
+    await tester.pumpAndSettle();
+
+    expect(find.text('新建'), findsNothing);
+    expect(tapped, isFalse);
+  });
+
+  testWidgets('operator + normal：按钮可见且可点', (tester) async {
+    var tapped = false;
+    await tester.pumpWidget(
+      _harness(readonly: false, lic: _lic('normal'), onPressed: () => tapped = true),
+    );
+    await tester.pumpAndSettle();
+
+    expect(find.text('新建'), findsOneWidget);
+    await tester.tap(find.text('新建'));
+    await tester.pump();
+    expect(tapped, isTrue);
+  });
+
+  testWidgets('operator + grace（宽限期）：按钮可见且可点', (tester) async {
+    var tapped = false;
+    await tester.pumpWidget(
+      _harness(
+        readonly: false,
+        lic: _lic('grace', expiredDays: 3),
+        onPressed: () => tapped = true,
+      ),
+    );
+    await tester.pumpAndSettle();
+
+    expect(find.text('新建'), findsOneWidget);
+    await tester.tap(find.text('新建'));
+    await tester.pump();
+    expect(tapped, isTrue);
+  });
+
+  testWidgets('operator + readonly（过期>7天）：按钮可见但禁用，点击弹提示且不触发 onPressed',
+      (tester) async {
+    var tapped = false;
+    final lic = _lic('readonly', expiredDays: 10);
+    await tester.pumpWidget(
+      _harness(readonly: false, lic: lic, onPressed: () => tapped = true),
+    );
+    await tester.pumpAndSettle();
+
+    // 按钮仍渲染（不隐藏），但被 IgnorePointer + Opacity 包裹禁用。
+    expect(find.text('新建'), findsOneWidget);
+    expect(find.byType(IgnorePointer), findsWidgets);
+    expect(find.byType(Opacity), findsWidgets);
+
+    // 点击覆盖层弹出原因提示，且 onPressed 未被调用。
+    // 覆盖层（GestureDetector）盖在按钮上，命中的是覆盖层而非按钮文字，故 warnIfMissed:false。
+    await tester.tap(find.text('新建'), warnIfMissed: false);
+    await tester.pumpAndSettle();
+
+    expect(tapped, isFalse);
+    expect(find.text(LicenseCopy.writeBlockedToast(lic)), findsOneWidget);
+  });
+
+  testWidgets('operator + locked（过期>15天）：按钮可见但禁用，弹锁定提示', (tester) async {
+    var tapped = false;
+    final lic = _lic('locked', expiredDays: 20);
+    await tester.pumpWidget(
+      _harness(readonly: false, lic: lic, onPressed: () => tapped = true),
+    );
+    await tester.pumpAndSettle();
+
+    expect(find.text('新建'), findsOneWidget);
+    await tester.tap(find.text('新建'), warnIfMissed: false);
+    await tester.pumpAndSettle();
+
+    expect(tapped, isFalse);
+    expect(find.text(LicenseCopy.writeBlockedToast(lic)), findsOneWidget);
+  });
+}