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

src/app/(dashboard)/settings/page.tsx

@@ -1,12 +1,16 @@
 import { redirect } from "next/navigation"
+import { getTranslations } from "next-intl/server"
 
 import { requireAuth } from "@/shared/lib/auth-guard"
 import { SettingsView } from "@/modules/settings/components/settings-view"
-import { StudentSettingsView } from "@/modules/settings/components/student-settings-view"
-import { TeacherSettingsView } from "@/modules/settings/components/teacher-settings-view"
-import { ParentSettingsView } from "@/modules/settings/components/parent-settings-view"
+import { SettingsServiceProvider } from "@/modules/settings/components/settings-service-context"
+import { resolveRoleSettingsConfig } from "@/modules/settings/config/role-settings-config"
+import type { SettingsService } from "@/modules/settings/types"
 import { getUserProfile } from "@/modules/users/data-access"
+import { updateUserProfile } from "@/modules/users/actions"
 import { getNotificationPreferences } from "@/modules/notifications/preferences"
+import { updateNotificationPreferencesAction } from "@/modules/messaging/actions"
+import type { UpdateNotificationPreferencesInput } from "@/modules/notifications/types"
 
 export const dynamic = "force-dynamic"
 
@@ -14,6 +18,32 @@ export const metadata = {
   title: "Settings",
 }
 
+/**
+ * 将通知偏好输入对象转换为 FormData，适配 updateNotificationPreferencesAction 的签名。
+ * Action 内部通过 formData.get(key) === "on" 解析布尔值。
+ */
+function buildNotificationFormData(input: UpdateNotificationPreferencesInput): FormData {
+  const formData = new FormData()
+  const booleanFields: Array<keyof UpdateNotificationPreferencesInput> = [
+    "emailEnabled",
+    "smsEnabled",
+    "pushEnabled",
+    "homeworkNotifications",
+    "gradeNotifications",
+    "announcementNotifications",
+    "messageNotifications",
+    "attendanceNotifications",
+    "quietHoursEnabled",
+  ]
+  for (const field of booleanFields) {
+    const value = input[field]
+    if (value === true) formData.set(field, "on")
+  }
+  if (input.quietHoursStart) formData.set("quietHoursStart", input.quietHoursStart)
+  if (input.quietHoursEnd) formData.set("quietHoursEnd", input.quietHoursEnd)
+  return formData
+}
+
 export default async function SettingsPage() {
   const ctx = await requireAuth()
 
@@ -24,22 +54,36 @@ export default async function SettingsPage() {
 
   const roles = ctx.roles
   const notificationPrefs = await getNotificationPreferences(userId)
+  const t = await getTranslations("settings")
 
-  if (roles.includes("admin")) {
-    return (
+  const config = resolveRoleSettingsConfig(roles)
+  const description = t(config?.descriptionKey ?? "title")
+  const backHref = config?.backHref ?? "/dashboard"
+  const generalExtra = config?.generalExtra
+
+  // 构建 SettingsService 实现，注入到 SettingsServiceProvider
+  // 组件层通过 useSettingsService() 消费，不直接 import users/messaging actions
+  const service: SettingsService = {
+    profile: {
+      getProfile: async () => getUserProfile(userId),
+      updateProfile: async (input) => updateUserProfile(input),
+    },
+    notifications: {
+      getPreferences: async () => getNotificationPreferences(userId),
+      updatePreferences: async (input) =>
+        updateNotificationPreferencesAction(null, buildNotificationFormData(input)),
+    },
+  }
+
+  return (
+    <SettingsServiceProvider service={service}>
       <SettingsView
-        description="Manage your admin preferences and account access."
-        backHref="/admin/dashboard"
+        description={description}
+        backHref={backHref}
         user={userProfile}
         notificationPreferences={notificationPrefs}
+        generalExtra={generalExtra}
       />
-    )
-  }
-  if (roles.includes("student")) {
-    return <StudentSettingsView user={userProfile} notificationPreferences={notificationPrefs} />
-  }
-  if (roles.includes("parent")) {
-    return <ParentSettingsView user={userProfile} notificationPreferences={notificationPrefs} />
-  }
-  return <TeacherSettingsView user={userProfile} notificationPreferences={notificationPrefs} />
+    </SettingsServiceProvider>
+  )
 }