refactor(modules): update existing module implementations across attendance, audit, auth, classes, course-plans, exams, files, homework, layout, proctoring, questions, scheduling, textbooks, users

- Update attendance components and data-access for record management

- Update audit log views, filters, and data-access

- Update auth login and register forms

- Update classes actions, components, and data-access (admin, schedule, stats)

- Update course-plans actions, form, list, progress, and schema

- Update exams actions, AI pipeline, preview components, and hooks

- Update files components (icon, list, preview, upload) and data-access

- Update homework assignment form, review view, auto-save hook, and stats-service

- Update layout sidebar, header, and navigation config

- Update proctoring actions, anti-cheat monitor, and data-access

- Update questions actions, components (dialog, actions, columns, filters), and data-access

- Update scheduling actions, auto-scheduler, components, and schema

- Update textbooks constants and text-selection hook

- Update users class-registration, import-dialog, data-access, and user-service

src/modules/layout/components/app-sidebar.tsx

@@ -11,13 +11,6 @@ import {
   CollapsibleTrigger,
 } from "@/shared/components/ui/collapsible"
 import { ScrollArea } from "@/shared/components/ui/scroll-area"
-import {
-  Select,
-  SelectContent,
-  SelectItem,
-  SelectTrigger,
-  SelectValue,
-} from "@/shared/components/ui/select"
 import {
   Tooltip,
   TooltipContent,
@@ -35,11 +28,13 @@ interface AppSidebarProps {
 }
 
 export function AppSidebar({ mode }: AppSidebarProps) {
-  const { expanded, toggleSidebar, isMobile, currentRole, setCurrentRole } = useSidebar()
+  const { expanded, toggleSidebar, isMobile } = useSidebar()
   const pathname = usePathname()
-  const { permissions, roles, hasRole } = usePermission()
+  const { permissions, hasRole } = usePermission()
 
   // 自动检测当前角色（优先级 admin > student > parent > teacher）
+  // 注意：grade_head / teaching_head 统一归入 teacher，因为 teacher 导航已通过
+  // 权限点（GRADE_MANAGE 等）动态显示班主任专属功能，无需切换角色。
   function detectAutoRole(): Role {
     if (hasRole("admin")) return "admin"
     if (hasRole("student")) return "student"
@@ -47,14 +42,7 @@ export function AppSidebar({ mode }: AppSidebarProps) {
     return "teacher"
   }
 
-  // 用户在 NAV_CONFIG 中实际可用的角色（过滤掉未配置的角色）
-  const availableRoles = roles.filter((r) => NAV_CONFIG[r] !== undefined)
-
-  // 如果 context 中有 currentRole 且用户拥有该角色，使用 currentRole；否则自动检测
-  const effectiveRole: Role =
-    currentRole !== null && availableRoles.includes(currentRole)
-      ? currentRole
-      : detectAutoRole()
+  const effectiveRole: Role = detectAutoRole()
 
   const allNavItems = NAV_CONFIG[effectiveRole] ?? NAV_CONFIG.teacher ?? []
 
@@ -71,7 +59,7 @@ export function AppSidebar({ mode }: AppSidebarProps) {
   }))
 
   // Ensure consistent state for hydration
-  if (!expanded && mode === 'mobile') return null 
+  if (!expanded && mode === 'mobile') return null
 
   return (
     <div className="flex h-full flex-col gap-4">
@@ -179,26 +167,12 @@ export function AppSidebar({ mode }: AppSidebarProps) {
 
       {/* Sidebar Footer */}
       <div className="p-4">
-        {availableRoles.length > 1 && (expanded || isMobile) && (
-          <div className="px-2 pb-2">
-            <Select value={effectiveRole} onValueChange={(v) => setCurrentRole(v as Role)}>
-              <SelectTrigger className="w-full">
-                <SelectValue placeholder="切换角色" />
-              </SelectTrigger>
-              <SelectContent>
-                {availableRoles.map((r) => (
-                  <SelectItem key={r} value={r}>{r}</SelectItem>
-                ))}
-              </SelectContent>
-            </Select>
-          </div>
-        )}
         {!isMobile && (
            <button
              onClick={toggleSidebar}
              className="hover:bg-sidebar-accent text-sidebar-foreground flex w-full items-center justify-center rounded-md border p-2 text-sm transition-colors"
            >
-              {expanded ? "收起" : <ChevronRight className="size-4" />}
+             {expanded ? "收起" : <ChevronRight className="size-4" />}
            </button>
         )}
       </div>

src/modules/layout/components/sidebar-provider.tsx

@@ -9,15 +9,12 @@ import {
   SheetTitle,
 } from "@/shared/components/ui/sheet"
 import { cn } from "@/shared/lib/utils"
-import type { Role } from "@/shared/types/permissions"
 
 type SidebarContextType = {
   expanded: boolean
   setExpanded: (expanded: boolean) => void
   isMobile: boolean
   toggleSidebar: () => void
-  currentRole: Role | null
-  setCurrentRole: (role: Role | null) => void
 }
 
 const SidebarContext = React.createContext<SidebarContextType | undefined>(
@@ -41,8 +38,6 @@ export function SidebarProvider({ children, sidebar }: SidebarProviderProps) {
   const [expanded, setExpanded] = React.useState(true)
   const [isMobile, setIsMobile] = React.useState(false)
   const [openMobile, setOpenMobile] = React.useState(false)
-  // null 表示自动检测（按现有优先级 admin > student > parent > teacher）
-  const [currentRole, setCurrentRole] = React.useState<Role | null>(null)
 
   React.useEffect(() => {
     const checkMobile = () => {
@@ -67,7 +62,7 @@ export function SidebarProvider({ children, sidebar }: SidebarProviderProps) {
 
   return (
     <SidebarContext.Provider
-      value={{ expanded, setExpanded, isMobile, toggleSidebar, currentRole, setCurrentRole }}
+      value={{ expanded, setExpanded, isMobile, toggleSidebar }}
     >
       <div className="flex h-screen overflow-hidden w-full flex-col md:flex-row bg-background">
         {/* Mobile Trigger & Sheet */}

src/modules/layout/components/site-header.tsx

@@ -27,7 +27,7 @@ import {
 } from "@/shared/components/ui/dropdown-menu"
 import { GlobalSearch } from "@/shared/components/global-search"
 
-import { NotificationDropdown } from "@/modules/messaging/components/notification-dropdown"
+import { NotificationDropdown } from "@/modules/notifications/components/notification-dropdown"
 import { useSidebar } from "./sidebar-provider"
 import { NAV_CONFIG } from "../config/navigation"
 

src/modules/layout/config/navigation.ts

@@ -21,6 +21,7 @@ import {
   BookMarked,
   BookCopy,
   Files,
+  BookX,
 } from "lucide-react"
 import type { LucideIcon } from "lucide-react"
 import { Permissions } from "@/shared/types/permissions"
@@ -127,6 +128,12 @@ export const NAV_CONFIG: Partial<Record<Role, NavItem[]>> = {
       href: "/admin/files",
       permission: Permissions.FILE_READ,
     },
+    {
+      title: "错题分析",
+      icon: BookX,
+      href: "/admin/error-book",
+      permission: Permissions.ERROR_BOOK_ANALYTICS_READ,
+    },
     {
       title: "Audit Logs",
       icon: ScrollText,
@@ -242,6 +249,12 @@ export const NAV_CONFIG: Partial<Record<Role, NavItem[]>> = {
       href: "/teacher/diagnostic",
       permission: Permissions.DIAGNOSTIC_READ,
     },
+    {
+      title: "错题分析",
+      icon: BookX,
+      href: "/teacher/error-book",
+      permission: Permissions.ERROR_BOOK_ANALYTICS_READ,
+    },
     {
       title: "选修课",
       icon: BookMarked,
@@ -297,6 +310,12 @@ export const NAV_CONFIG: Partial<Record<Role, NavItem[]>> = {
         { title: "成绩分析", href: "/teacher/grades/analytics", permission: Permissions.GRADE_RECORD_READ },
       ]
     },
+    {
+      title: "错题分析",
+      icon: BookX,
+      href: "/teacher/error-book",
+      permission: Permissions.ERROR_BOOK_ANALYTICS_READ,
+    },
     ...COMMON_NAV_ITEMS,
   ],
   teaching_head: [
@@ -336,6 +355,12 @@ export const NAV_CONFIG: Partial<Record<Role, NavItem[]>> = {
         { title: "成绩分析", href: "/teacher/grades/analytics", permission: Permissions.GRADE_RECORD_READ },
       ]
     },
+    {
+      title: "错题分析",
+      icon: BookX,
+      href: "/teacher/error-book",
+      permission: Permissions.ERROR_BOOK_ANALYTICS_READ,
+    },
     ...COMMON_NAV_ITEMS,
   ],
   student: [
@@ -379,6 +404,12 @@ export const NAV_CONFIG: Partial<Record<Role, NavItem[]>> = {
       href: "/student/diagnostic",
       permission: Permissions.DIAGNOSTIC_READ,
     },
+    {
+      title: "错题本",
+      icon: BookX,
+      href: "/student/error-book",
+      permission: Permissions.ERROR_BOOK_READ,
+    },
     {
       title: "Electives",
       icon: BookMarked,
@@ -405,6 +436,12 @@ export const NAV_CONFIG: Partial<Record<Role, NavItem[]>> = {
       href: "/parent/attendance",
       permission: Permissions.ATTENDANCE_READ,
     },
+    {
+      title: "错题本",
+      icon: BookX,
+      href: "/parent/error-book",
+      permission: Permissions.ERROR_BOOK_READ,
+    },
     {
       title: "Leave Request",
       icon: CalendarRange,