feat: 新增多模块后端管理、数据同步工具与鸿蒙路由适配

本次提交新增了以下核心内容：
1. 后端管理模块：包含字体同步、插件元数据、插件用户设置、稍后读消息/共享列表的控制器、模型、验证器与多语言配置
2. Flutter数据同步模块：统一的事件总线与兼容层，替代分散的StreamController
3. 鸿蒙端路由适配：完整的路由定义、构建器与占位组件
4. 后端API接口：字体同步与插件更新的服务端API，支持自动建表与跨域请求
5. 鸿蒙权限校验脚本：用于校验module.json5与string.json的权限声明一致性

lib/features/auth/presentation/register_section.dart

@@ -1,9 +1,9 @@
 /// ============================================================
 /// 闲言APP — 注册区域组件
 /// 创建时间: 2026-05-10
-/// 更新时间: 2026-05-23
+/// 更新时间: 2026-06-01
 /// 作用: 登录页面的注册区域，分步式注册流程
-/// 上次更新: 添加Tips提醒卡片，邮箱已注册跳转登录弹窗
+/// 上次更新: 接入多语言翻译系统，替换硬编码中文文本
 /// ============================================================
 
 import 'package:flutter/cupertino.dart';
@@ -14,6 +14,8 @@ import '../../../../core/theme/app_spacing.dart';
 import '../../../../core/theme/app_typography.dart';
 import '../../../../core/theme/app_radius.dart';
 import '../../../../core/utils/logger.dart';
+import '../../../../l10n/translation_resolver.dart';
+import '../../../../l10n/types/t.dart';
 import '../../../../shared/widgets/feedback/app_toast.dart';
 import '../../../../shared/widgets/containers/glass_container.dart';
 import '../providers/auth_provider.dart';
@@ -94,16 +96,19 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
   @override
   Widget build(BuildContext context) {
     final authState = ref.watch(authProvider);
+    final t = ref.watch(translationsProvider);
+    final auth = t.auth;
+    final common = t.common;
 
     return Column(
       children: [
-        _buildHeader(),
+        _buildHeader(auth),
         _buildStepIndicator(),
         const SizedBox(height: AppSpacing.md),
         GlassContainer(
           depth: GlassDepth.elevated,
           padding: const EdgeInsets.all(AppSpacing.lg),
-          child: _buildRegStepContent(authState),
+          child: _buildRegStepContent(authState, auth, common),
         ),
         const SizedBox(height: AppSpacing.md),
         CupertinoButton(
@@ -112,7 +117,7 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
             setState(() => _regStep = 1);
           },
           child: Text(
-            '已有账号？去登录',
+            auth.hasAccountLogin,
             style: AppTypography.subhead.copyWith(color: ext.accent),
           ),
         ),
@@ -120,7 +125,7 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
     );
   }
 
-  Widget _buildHeader() {
+  Widget _buildHeader(TAuth auth) {
     return Padding(
       padding: const EdgeInsets.only(bottom: AppSpacing.xl),
       child: Row(
@@ -148,7 +153,7 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
               crossAxisAlignment: CrossAxisAlignment.start,
               children: [
                 Text(
-                  '创建账号',
+                  auth.createAccount,
                   style: AppTypography.title2.copyWith(
                     color: ext.textPrimary,
                     fontWeight: FontWeight.w700,
@@ -156,7 +161,7 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
                 ),
                 const SizedBox(height: 2),
                 Text(
-                  '注册一个新账号开始使用',
+                  auth.registerNewAccount,
                   style: AppTypography.subhead.copyWith(
                     color: ext.textSecondary,
                   ),
@@ -196,25 +201,25 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
     );
   }
 
-  Widget _buildRegStepContent(AuthState authState) {
+  Widget _buildRegStepContent(AuthState authState, TAuth auth, TCommon common) {
     switch (_regStep) {
       case 1:
         return Column(
           children: [
             LabeledInputField(
-              label: '用户名',
+              label: auth.username,
               labelIcon: CupertinoIcons.person_add,
               controller: _usernameController,
-              placeholder: '3-30位，字母/数字/下划线/中文',
+              placeholder: auth.usernameHint,
               icon: CupertinoIcons.person_add,
               ext: ext,
             ),
             const SizedBox(height: AppSpacing.md),
             LabeledInputField(
-              label: '邮箱（必填）',
+              label: auth.emailRequired,
               labelIcon: CupertinoIcons.mail,
               controller: _emailController,
-              placeholder: '用于验证和找回密码',
+              placeholder: auth.emailHint,
               icon: CupertinoIcons.mail,
               ext: ext,
               keyboardType: TextInputType.emailAddress,
@@ -224,6 +229,8 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
               width: double.infinity,
               height: 50,
               child: CupertinoButton(
+                padding: EdgeInsets.zero,
+                minimumSize: Size.zero,
                 color: ext.accent,
                 borderRadius: AppRadius.mdBorder,
                 onPressed:
@@ -242,7 +249,7 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
                     ),
                     const SizedBox(width: 6),
                     Text(
-                      '下一步',
+                      auth.nextStep,
                       style: AppTypography.callout.copyWith(
                         color: CupertinoColors.white,
                         fontWeight: FontWeight.w600,
@@ -265,7 +272,7 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
                   Icon(CupertinoIcons.mail, size: 36, color: ext.accent),
                   const SizedBox(height: AppSpacing.xs),
                   Text(
-                    '验证码已发送至 ${_emailController.text.trim()}',
+                    '${auth.codeSentTo} ${_emailController.text.trim()}',
                     style: AppTypography.footnote.copyWith(
                       color: ext.textSecondary,
                     ),
@@ -275,10 +282,10 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
               ),
             ),
             LabeledInputField(
-              label: '验证码',
+              label: auth.verifyCode,
               labelIcon: CupertinoIcons.number,
               controller: _regCodeController,
-              placeholder: '输入6位验证码',
+              placeholder: auth.enterCodeHint,
               icon: CupertinoIcons.number,
               ext: ext,
               keyboardType: TextInputType.number,
@@ -294,7 +301,7 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
                   child: _emsSending
                       ? CupertinoActivityIndicator(radius: 6, color: ext.accent)
                       : Text(
-                          _emsCountdown > 0 ? '${_emsCountdown}s' : '重新发送',
+                          _emsCountdown > 0 ? '${_emsCountdown}s' : auth.resend,
                           style: AppTypography.caption1.copyWith(
                             color: ext.accent,
                           ),
@@ -331,7 +338,7 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
                         ),
                         const SizedBox(height: 2),
                         Text(
-                          '若未收到验证码，请检查垃圾邮箱。如需帮助，请联系客服。',
+                          auth.codeNotReceivedTip,
                           style: AppTypography.caption2.copyWith(
                             color: ext.textSecondary,
                           ),
@@ -349,6 +356,8 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
                   child: SizedBox(
                     height: 50,
                     child: CupertinoButton(
+                      padding: EdgeInsets.zero,
+                      minimumSize: Size.zero,
                       color: ext.bgSecondary,
                       borderRadius: AppRadius.mdBorder,
                       onPressed: () => setState(() => _regStep = 1),
@@ -363,7 +372,7 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
                           ),
                           const SizedBox(width: 6),
                           Text(
-                            '上一步',
+                            auth.prevStep,
                             style: AppTypography.callout.copyWith(
                               color: ext.textPrimary,
                               fontWeight: FontWeight.w600,
@@ -379,6 +388,8 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
                   child: SizedBox(
                     height: 50,
                     child: CupertinoButton(
+                      padding: EdgeInsets.zero,
+                      minimumSize: Size.zero,
                       color: ext.accent,
                       borderRadius: AppRadius.mdBorder,
                       onPressed: _regCodeController.text.trim().isNotEmpty
@@ -395,7 +406,7 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
                           ),
                           const SizedBox(width: 6),
                           Text(
-                            '下一步',
+                            auth.nextStep,
                             style: AppTypography.callout.copyWith(
                               color: CupertinoColors.white,
                               fontWeight: FontWeight.w600,
@@ -415,10 +426,10 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
         return Column(
           children: [
             LabeledInputField(
-              label: '设置密码',
+              label: auth.setPassword,
               labelIcon: CupertinoIcons.lock,
               controller: _regPasswordController,
-              placeholder: '6-30位密码',
+              placeholder: auth.passwordHint,
               icon: CupertinoIcons.lock,
               ext: ext,
               obscureText: _obscureRegPassword,
@@ -427,7 +438,10 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
                 onTap: () =>
                     setState(() => _obscureRegPassword = !_obscureRegPassword),
                 child: ConstrainedBox(
-                  constraints: const BoxConstraints(minWidth: 44, minHeight: 44),
+                  constraints: const BoxConstraints(
+                    minWidth: 44,
+                    minHeight: 44,
+                  ),
                   child: Center(
                     child: Icon(
                       _obscureRegPassword
@@ -442,10 +456,10 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
             ),
             const SizedBox(height: AppSpacing.md),
             LabeledInputField(
-              label: '确认密码',
+              label: auth.confirmPassword,
               labelIcon: CupertinoIcons.lock_shield,
               controller: _regConfirmPasswordController,
-              placeholder: '再次输入密码',
+              placeholder: auth.confirmPasswordHint,
               icon: CupertinoIcons.lock_shield,
               ext: ext,
               obscureText: true,
@@ -477,7 +491,7 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
                     ),
                     const SizedBox(width: AppSpacing.sm),
                     Text(
-                      '🛡️ 密保问题（选填）',
+                      auth.secQuestionOptional,
                       style: AppTypography.subhead.copyWith(
                         color: _showSecQuestion
                             ? ext.accent
@@ -486,7 +500,9 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
                     ),
                     const Spacer(),
                     Text(
-                      _selectedSecQuestionText.isNotEmpty ? '已选择' : '增强账号安全',
+                      _selectedSecQuestionText.isNotEmpty
+                          ? auth.selected
+                          : auth.enhanceSecurity,
                       style: AppTypography.caption1.copyWith(
                         color: ext.textHint,
                       ),
@@ -516,7 +532,7 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
                 borderRadius: AppRadius.mdBorder,
                 onPressed: _secQuestions.isEmpty
                     ? null
-                    : () => _showSecQuestionPicker(context),
+                    : () => _showSecQuestionPicker(context, auth, common),
                 child: Row(
                   children: [
                     Icon(
@@ -529,7 +545,7 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
                       child: Text(
                         _selectedSecQuestionText.isNotEmpty
                             ? _selectedSecQuestionText
-                            : '选择密保问题',
+                            : auth.selectSecQuestion,
                         style: AppTypography.subhead.copyWith(
                           color: _selectedSecQuestionText.isNotEmpty
                               ? ext.textPrimary
@@ -554,7 +570,7 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
                   ),
                   child: CupertinoTextField(
                     controller: _secAnswerController,
-                    placeholder: '输入密保答案（1-50位）',
+                    placeholder: auth.enterSecAnswerHint,
                     placeholderStyle: AppTypography.body.copyWith(
                       color: ext.textHint,
                     ),
@@ -598,7 +614,7 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
                   ),
                   const SizedBox(width: AppSpacing.sm),
                   Text(
-                    '订阅闲言团队的邮箱推送',
+                    auth.subscribeEmail,
                     style: AppTypography.footnote.copyWith(
                       color: ext.textSecondary,
                     ),
@@ -613,6 +629,8 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
                   child: SizedBox(
                     height: 50,
                     child: CupertinoButton(
+                      padding: EdgeInsets.zero,
+                      minimumSize: Size.zero,
                       color: ext.bgSecondary,
                       borderRadius: AppRadius.mdBorder,
                       onPressed: () => setState(() => _regStep = 2),
@@ -627,7 +645,7 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
                           ),
                           const SizedBox(width: 6),
                           Text(
-                            '上一步',
+                            auth.prevStep,
                             style: AppTypography.callout.copyWith(
                               color: ext.textPrimary,
                               fontWeight: FontWeight.w600,
@@ -643,6 +661,8 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
                   child: SizedBox(
                     height: 50,
                     child: CupertinoButton(
+                      padding: EdgeInsets.zero,
+                      minimumSize: Size.zero,
                       color: ext.accent,
                       borderRadius: AppRadius.mdBorder,
                       onPressed:
@@ -666,7 +686,7 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
                                 ),
                                 const SizedBox(width: 6),
                                 Text(
-                                  '完成注册',
+                                  auth.completeRegister,
                                   style: AppTypography.callout.copyWith(
                                     color: CupertinoColors.white,
                                     fontWeight: FontWeight.w600,
@@ -688,6 +708,7 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
   }
 
   Future<void> _handleRegister() async {
+    final t = ref.read(translationsProvider);
     final username = _usernameController.text.trim();
     final password = _regPasswordController.text;
     final confirmPassword = _regConfirmPasswordController.text;
@@ -695,22 +716,22 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
     final code = _regCodeController.text.trim();
 
     if (username.isEmpty || password.isEmpty || email.isEmpty) {
-      AppToast.showWarning('请填写所有必填项');
+      AppToast.showWarning(t.auth.pleaseFillRequired);
       return;
     }
 
     if (password != confirmPassword) {
-      AppToast.showError('两次密码不一致');
+      AppToast.showError(t.auth.passwordMismatch);
       return;
     }
 
     if (password.length < 6) {
-      AppToast.showWarning('密码长度不能少于6位');
+      AppToast.showWarning(t.auth.passwordTooShort);
       return;
     }
 
     if (code.isNotEmpty && !EmailService.verifyCode(email: email, code: code)) {
-      AppToast.showError('验证码错误');
+      AppToast.showError(t.auth.codeError);
       return;
     }
 
@@ -726,16 +747,17 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
               : null,
         );
     if (success && mounted) {
-      AppToast.showSuccess('注册成功，欢迎加入！');
+      AppToast.showSuccess(t.auth.registerSuccess);
       widget.onRegisterSuccess();
     }
   }
 
   Future<void> _sendCode(String email) async {
+    final t = ref.read(translationsProvider);
     if (_emsSending || _emsCountdown > 0 || email.isEmpty) return;
 
     if (!email.contains('@')) {
-      AppToast.showWarning('请输入有效的邮箱地址');
+      AppToast.showWarning(t.auth.pleaseEnterValidEmail);
       return;
     }
 
@@ -751,13 +773,13 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
         code: code,
       );
       if (!ok && mounted) {
-        AppToast.showError('验证码发送失败，请检查邮箱地址');
+        AppToast.showError(t.auth.codeSendFailed);
         setState(() {
           _emsSending = false;
           _emsCountdown = 0;
         });
       } else if (mounted) {
-        AppToast.showSuccess('验证码已发送');
+        AppToast.showSuccess(t.auth.codeSent);
         setState(() => _emsSending = false);
       }
     } catch (e) {
@@ -769,7 +791,7 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
             errorMsg.contains('exists')) {
           _showEmailRegisteredDialog(email);
         } else {
-          AppToast.showError('验证码发送失败');
+          AppToast.showError(t.auth.codeSendFailedShort);
         }
         setState(() {
           _emsSending = false;
@@ -789,19 +811,20 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
   }
 
   void _showEmailRegisteredDialog(String email) {
+    final t = ref.read(translationsProvider);
     showCupertinoDialog<void>(
       context: context,
       builder: (ctx) => CupertinoAlertDialog(
-        title: const Text('邮箱已注册'),
-        content: Text('该邮箱 ($email) 已被注册。是否跳转到登录页面？'),
+        title: Text(t.auth.emailRegistered),
+        content: Text(t.auth.emailRegisteredHint.replaceAll('{email}', email)),
         actions: [
           CupertinoDialogAction(
-            child: const Text('取消'),
+            child: Text(t.common.cancel),
             onPressed: () => Navigator.pop(ctx),
           ),
           CupertinoDialogAction(
             isDefaultAction: true,
-            child: const Text('去登录'),
+            child: Text(t.auth.goLogin),
             onPressed: () {
               Navigator.pop(ctx);
               widget.onSwitchToLogin();
@@ -812,7 +835,11 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
     );
   }
 
-  void _showSecQuestionPicker(BuildContext context) {
+  void _showSecQuestionPicker(
+    BuildContext context,
+    TAuth auth,
+    TCommon common,
+  ) {
     showCupertinoModalPopup<void>(
       context: context,
       builder: (ctx) => Container(
@@ -825,7 +852,7 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
               children: [
                 CupertinoButton(
                   child: Text(
-                    '取消',
+                    common.cancel,
                     style: AppTypography.subhead.copyWith(
                       color: ext.textSecondary,
                     ),
@@ -833,7 +860,7 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
                   onPressed: () => Navigator.pop(ctx),
                 ),
                 Text(
-                  '选择密保问题',
+                  auth.selectSecQuestion,
                   style: AppTypography.headline.copyWith(
                     color: ext.textPrimary,
                     fontWeight: FontWeight.w600,
@@ -841,7 +868,7 @@ class _RegisterSectionState extends ConsumerState<RegisterSection> {
                 ),
                 CupertinoButton(
                   child: Text(
-                    '确定',
+                    common.confirm,
                     style: AppTypography.subhead.copyWith(
                       color: ext.accent,
                       fontWeight: FontWeight.w600,