feat(settings): 设置与个人信息模块审计重构 — i18n + 服务注入解耦 + Error Boundary + 流式渲染

- 新增 SettingsService 接口 + Context 注入，组件层不再直接 import users/messaging actions

- 新增 resolveRoleSettingsConfig 配置驱动角色路由，删除 parent/student/teacher-settings-view 冗余文件

- 新增 SettingsSectionErrorBoundary，每个 TabsContent + profile 角色概览区块均包裹

- 新增 ProfileStudentOverview/ProfileTeacherOverview 异步 Server Component + 骨架屏，支持流式渲染

- 抽取 buildStudentOverviewData 等纯函数到 lib/student-overview-data.ts，便于单元测试

- 新增 settings.json 翻译文件（zh-CN + en），所有组件改用 useTranslations/getTranslations

- 重构 profile/page.tsx：i18n 适配 + Suspense 分区加载 + 业务逻辑抽离

- 同步更新架构图 004/005

docs/architecture/005_architecture_data.json

@@ -2735,6 +2735,14 @@
               "createExamAction"
             ]
           },
+          {
+            "name": "addExamQuestions",
+            "signature": "addExamQuestions(examId: string, items: Array<{ questionId: string; score: number; order: number }>): Promise<void>",
+            "purpose": "批量插入考试-题目关联（跨模块写接口，供 lesson-preparation/publish-service 调用，避免直查 examQuestions 表）",
+            "usedBy": [
+              "lesson-preparation/publish-service.publishLessonPlanHomework"
+            ]
+          },
           {
             "name": "persistAiGeneratedExamDraft",
             "signature": "persistAiGeneratedExamDraft(input: { examId, title, creatorId, subjectId, gradeId, scheduledAt?, description, structure, generated }): Promise<void>",
@@ -6258,56 +6266,125 @@
             "usedBy": [
               "data-access.getAiProviderForUpdate"
             ]
+          },
+          {
+            "name": "SettingsService",
+            "file": "types.ts",
+            "type": "interface",
+            "definition": "设置模块统一服务接口（profile + notifications + trackEvent），通过 React Context 注入实现解耦",
+            "usedBy": [
+              "components/settings-service-context.tsx",
+              "app/(dashboard)/settings/page.tsx"
+            ]
+          },
+          {
+            "name": "ProfileService",
+            "file": "types.ts",
+            "type": "interface",
+            "definition": "个人资料服务接口（getProfile + updateProfile），解耦组件对 users/actions 的直接依赖",
+            "usedBy": [
+              "types.SettingsService",
+              "components/profile-settings-form.tsx"
+            ]
+          },
+          {
+            "name": "NotificationPreferenceService",
+            "file": "types.ts",
+            "type": "interface",
+            "definition": "通知偏好服务接口（getPreferences + updatePreferences），解耦组件对 messaging/actions 的直接依赖",
+            "usedBy": [
+              "types.SettingsService",
+              "components/notification-preferences-form.tsx"
+            ]
           }
         ],
         "components": [
           {
             "name": "AiProviderSettingsCard",
-            "purpose": "AI Provider设置卡片"
+            "purpose": "AI Provider设置卡片（i18n：settings.ai.providers）"
           },
           {
             "name": "AdminSettingsView",
-            "purpose": "系统设置视图（学校信息/安全策略/文件上传/通知配置 4 个 Card，模拟保存；消费方：/admin/settings 页面）",
+            "purpose": "系统设置视图（学校信息/安全策略/文件上传/通知配置 4 个 Card，i18n；消费方：/admin/settings 页面）",
             "usedBy": [
               "app/(dashboard)/admin/settings/page.tsx"
             ]
           },
           {
             "name": "ProfileSettingsForm",
-            "purpose": "个人资料设置表单"
+            "purpose": "个人资料设置表单（通过 useSettingsService().profile.updateProfile 调用，i18n：settings.profile）",
+            "deps": [
+              "useSettingsService",
+              "shared/components/form-fields/text-field",
+              "shared/components/form-fields/select-field"
+            ]
           },
           {
             "name": "ThemePreferencesCard",
-            "purpose": "主题偏好卡片"
+            "purpose": "主题偏好卡片（i18n：settings.appearance）"
           },
           {
-            "name": "StudentSettingsView",
-            "purpose": "学生设置视图（含 Notifications tab）"
-          },
-          {
-            "name": "TeacherSettingsView",
-            "purpose": "教师设置视图（含 Notifications tab）"
-          },
-          {
-            "name": "ParentSettingsView",
-            "purpose": "家长设置视图（复用 SettingsView 布局，backHref 指向 /parent/dashboard，含家长专属快捷链接；消费方：/settings 页面 parent 角色分支）",
+            "name": "SettingsView",
+            "purpose": "统一设置页布局（5 标签页：General/Notifications/Appearance/Security/AI；角色差异通过 resolveRoleSettingsConfig 配置驱动 + generalExtra props 注入；Tab URL 持久化；每个 TabsContent 包裹 SettingsSectionErrorBoundary + Suspense 骨架屏；AI 标签页条件渲染需 AI_CONFIGURE 权限；登出 AlertDialog 二次确认；i18n：settings 命名空间）",
             "usedBy": [
               "app/(dashboard)/settings/page.tsx"
             ]
           },
           {
-            "name": "SettingsView",
-            "purpose": "统一设置页布局（5 标签页：General/Notifications/Appearance/Security/AI，角色差异通过 description/backHref/generalExtra 三个 props 注入；Tab 通过 URL ?tab= 参数持久化；AI 标签页条件渲染需 AI_CONFIGURE 权限；登出按钮使用 AlertDialog 二次确认；4 个消费方：admin/teacher/student/parent 设置页）",
+            "name": "SettingsServiceProvider",
+            "file": "components/settings-service-context.tsx",
+            "purpose": "SettingsService React Context Provider，页面层注入服务实现，组件层通过 useSettingsService() 消费",
             "usedBy": [
-              "AdminSettingsView",
-              "TeacherSettingsView",
-              "StudentSettingsView",
-              "ParentSettingsView"
+              "app/(dashboard)/settings/page.tsx"
+            ]
+          },
+          {
+            "name": "SettingsSectionErrorBoundary",
+            "file": "components/settings-section-error-boundary.tsx",
+            "purpose": "分区 Error Boundary，包裹每个 TabsContent 和 profile 角色概览区块，局部失败不影响整页",
+            "usedBy": [
+              "components/settings-view.tsx",
+              "app/(dashboard)/profile/page.tsx"
+            ]
+          },
+          {
+            "name": "QuickLinksCard",
+            "file": "components/quick-links-card.tsx",
+            "purpose": "快捷链接卡片（客户端组件，i18n 键驱动：settings.quickLinks）",
+            "usedBy": [
+              "config/role-settings-config.tsx"
+            ]
+          },
+          {
+            "name": "ProfileStudentOverview",
+            "file": "components/profile-student-overview.tsx",
+            "purpose": "学生概览异步 Server Component，独立获取学生数据并渲染（StatsGrid + UpcomingAssignments + Grades + TodaySchedule），可被 Suspense + ErrorBoundary 包裹实现流式渲染",
+            "deps": [
+              "classes/data-access.getStudentClasses",
+              "classes/data-access.getStudentSchedule",
+              "homework/data-access.getStudentHomeworkAssignments",
+              "homework/data-access.getStudentDashboardGrades",
+              "lib/student-overview-data.buildStudentOverviewData"
+            ],
+            "usedBy": [
+              "app/(dashboard)/profile/page.tsx"
+            ]
+          },
+          {
+            "name": "ProfileTeacherOverview",
+            "file": "components/profile-teacher-overview.tsx",
+            "purpose": "教师概览异步 Server Component，独立获取教师数据并渲染（任教科目 + 任教班级），可被 Suspense + ErrorBoundary 包裹",
+            "deps": [
+              "classes/data-access.getTeacherClasses",
+              "classes/data-access.getTeacherTeachingSubjects"
+            ],
+            "usedBy": [
+              "app/(dashboard)/profile/page.tsx"
             ]
           },
           {
             "name": "PasswordChangeForm",
-            "purpose": "密码修改表单（当前密码/新密码/确认密码 + 强度指示器 + 需求提示）",
+            "purpose": "密码修改表单（当前密码/新密码/确认密码 + 强度指示器 + 需求提示；i18n：settings.security；a11y：aria-label）",
             "deps": [
               "changePasswordAction",
               "getPasswordStrength",
@@ -6317,17 +6394,14 @@
           {
             "name": "NotificationPreferencesForm",
             "file": "components/notification-preferences-form.tsx",
-            "purpose": "通知偏好设置表单（Switch 切换 email/sms/push 通道 + 5 个分类开关：作业/成绩/公告/消息/考勤；隐藏 checkbox 与 Switch 同步，useActionState 调用 updateNotificationPreferencesAction）",
+            "purpose": "通知偏好设置表单（Switch 切换 email/sms/push 通道 + 5 个分类开关；通过 useSettingsService().notifications.updatePreferences 调用，i18n：settings.notifications）",
             "deps": [
-              "updateNotificationPreferencesAction",
+              "useSettingsService",
               "shared/components/ui/switch",
-              "shared/components/ui/card",
-              "react.useActionState"
+              "shared/components/ui/card"
             ],
             "usedBy": [
-              "TeacherSettingsView",
-              "StudentSettingsView",
-              "ParentSettingsView"
+              "SettingsView"
             ]
           }
         ]
@@ -12083,17 +12157,17 @@
           },
           {
             "name": "buildInitialContent",
-            "file": "data-access.ts",
+            "file": "lib/document-migration.ts（data-access.ts re-export）",
             "purpose": "基于模板构建初始课案内容（v2 nodes+edges）"
           },
           {
             "name": "migrateV1ToV2",
-            "file": "data-access.ts",
-            "purpose": "v1→v2 迁移：将旧 blocks 数组转换为 nodes + 线性 edges（节点按网格布局）"
+            "file": "lib/document-migration.ts（data-access.ts re-export）",
+            "purpose": "v1→v2 迁移：将旧 blocks 数组转换为 nodes + 线性 edges（节点按网格布局），使用类型守卫 isV1Document/isV2Document 替代 as 断言"
           },
           {
             "name": "normalizeDocument",
-            "file": "data-access.ts",
+            "file": "lib/document-migration.ts（data-access.ts re-export）",
             "purpose": "规范化：确保 content 为 v2 格式，兼容旧 v1 数据（自动调用 migrateV1ToV2）"
           },
           {
@@ -12149,7 +12223,7 @@
           {
             "name": "publishLessonPlanHomework",
             "file": "publish-service.ts",
-            "purpose": "发布课案为作业（编排 homework/exams/classes）"
+            "purpose": "发布课案为作业（编排 homework/exams/classes，通过对方 data-access 调用 addExamQuestions/getStudentIdsByClassIds，无直查跨模块表）"
           },
           {
             "name": "suggestKnowledgePoints",
@@ -12264,6 +12338,10 @@
         "types.ts",
         "constants.ts",
         "schema.ts",
+        "lib/document-migration.ts",
+        "lib/node-summary.ts",
+        "lib/rf-mappers.ts",
+        "config/block-registry.tsx",
         "data-access.ts",
         "data-access-versions.ts",
         "data-access-templates.ts",
@@ -12283,6 +12361,8 @@
         "components/node-editor.tsx",
         "components/node-edit-panel.tsx",
         "components/nodes/lesson-node.tsx",
+        "components/lesson-plan-error-boundary.tsx",
+        "components/lesson-plan-skeleton.tsx",
         "components/block-renderer.tsx",
         "components/template-picker.tsx",
         "components/version-history-drawer.tsx",
@@ -13027,7 +13107,11 @@
       "dependsOn": [
         "shared",
         "auth",
-        "messaging"
+        "classes",
+        "homework",
+        "dashboard",
+        "users",
+        "notifications"
       ],
       "uses": {
         "shared": [
@@ -13035,17 +13119,41 @@
           "auth-guard",
           "ai",
           "types",
-          "components.ui.switch"
+          "components.ui.switch",
+          "components.ui.card",
+          "components.ui.tabs",
+          "components.ui.alert-dialog",
+          "components.form-fields"
         ],
         "auth": [
           "auth"
         ],
-        "messaging": [
-          "notification-preferences.getNotificationPreferences",
-          "actions.getNotificationPreferencesAction",
-          "actions.updateNotificationPreferencesAction"
+        "classes": [
+          "data-access.getStudentClasses",
+          "data-access.getStudentSchedule",
+          "data-access.getTeacherClasses",
+          "data-access.getTeacherTeachingSubjects"
+        ],
+        "homework": [
+          "data-access.getStudentHomeworkAssignments",
+          "data-access.getStudentDashboardGrades"
+        ],
+        "dashboard": [
+          "components.student-dashboard.student-grades-card",
+          "components.student-dashboard.student-stats-grid",
+          "components.student-dashboard.student-today-schedule-card",
+          "components.student-dashboard.student-upcoming-assignments-card"
+        ],
+        "users": [
+          "data-access.UserProfile",
+          "data-access.UpdateUserProfileInput"
+        ],
+        "notifications": [
+          "types.NotificationPreferences",
+          "types.UpdateNotificationPreferencesInput"
         ]
-      }
+      },
+      "note": "组件层通过 SettingsService 接口注入解耦，不直接 import messaging/actions；页面层 app/(dashboard)/settings/page.tsx 负责注入 users/actions + messaging/actions 实现"
     },
     "users": {
       "dependsOn": [