fix: 修复多个页面显示与导航问题

- 分类管理：隐藏 Slug 列和输入框，自动生成去重 slug
- 题库管理/UGC 审核：拆分为独立视图，移除 tab 切换
- 侧栏导航：修复题库管理与 UGC 审核同时高亮问题
- 技能树：适配后端无分页响应，移除分页逻辑
- 知识卡：防御 questionStem 为 undefined 导致崩溃

src/components/category/CategoryFormDialog.tsx

@@ -38,6 +38,7 @@ interface CategoryFormDialogProps {
   open: boolean
   onOpenChange: (open: boolean) => void
   category?: Category | null
+  existingSlugs?: string[]
   onSubmit: (data: CategoryFormData) => Promise<void>
 }
 
@@ -50,10 +51,24 @@ function generateSlug(name: string): string {
     .replace(/^-|-$/g, "")
 }
 
+function generateUniqueSlug(name: string, existingSlugs: string[], currentSlug?: string): string {
+  const base = generateSlug(name)
+  if (!base) return base
+
+  // Exclude the current category's slug when editing
+  const taken = existingSlugs.filter((s) => s !== currentSlug)
+  if (!taken.includes(base)) return base
+
+  let i = 1
+  while (taken.includes(`${base}-${i}`)) i++
+  return `${base}-${i}`
+}
+
 export function CategoryFormDialog({
   open,
   onOpenChange,
   category,
+  existingSlugs = [],
   onSubmit,
 }: CategoryFormDialogProps) {
   const isEditing = !!category
@@ -111,7 +126,7 @@ export function CategoryFormDialog({
               {...register("name", {
                 onChange: (e: React.ChangeEvent<HTMLInputElement>) => {
                   if (!isEditing) {
-                    setValue("slug", generateSlug(e.target.value), {
+                    setValue("slug", generateUniqueSlug(e.target.value, existingSlugs, category?.slug), {
                       shouldValidate: true,
                     })
                   }
@@ -123,18 +138,6 @@ export function CategoryFormDialog({
             )}
           </div>
 
-          <div className="space-y-2">
-            <Label htmlFor="slug">Slug</Label>
-            <Input
-              id="slug"
-              placeholder="例：tang-dynasty"
-              {...register("slug")}
-            />
-            {errors.slug && (
-              <p className="text-sm text-destructive">{errors.slug.message}</p>
-            )}
-          </div>
-
           <div className="grid grid-cols-2 gap-4">
             <div className="space-y-2">
               <Label htmlFor="sortOrder">排序</Label>

src/components/category/columns.tsx

@@ -25,15 +25,6 @@ export function getColumns(ctx: ColumnContext): ColumnDef<Category>[] {
         <span className="font-medium">{row.getValue("name")}</span>
       ),
     },
-    {
-      accessorKey: "slug",
-      header: "Slug",
-      cell: ({ row }) => (
-        <code className="rounded bg-muted px-1.5 py-0.5 text-xs">
-          {row.getValue("slug")}
-        </code>
-      ),
-    },
     {
       accessorKey: "status",
       header: "状态",

src/components/layout/Header.tsx

@@ -7,7 +7,7 @@ export function Header() {
     <header className="flex h-14 items-center justify-between border-b bg-background px-6">
       <div />
       <div className="flex items-center gap-3 text-sm text-muted-foreground">
-        <span>管理员: {admin?.id ?? "admin"}</span>
+        <span>管理员: {admin?.username ?? "admin"}</span>
       </div>
     </header>
   )

src/components/layout/Sidebar.tsx

@@ -1,5 +1,5 @@
 import { useState } from "react"
-import { NavLink, useNavigate } from "react-router"
+import { useLocation, useNavigate } from "react-router"
 import {
   LayoutDashboard,
   BookOpen,
@@ -18,9 +18,16 @@ import {
 import { cn } from "@/lib/utils"
 import { useAuth } from "@/hooks/use-auth"
 import { ChangePasswordDialog } from "@/components/admin/ChangePasswordDialog"
+import type { LucideIcon } from "lucide-react"
 
-const navItems = [
-  { to: "/", label: "数据看板", icon: LayoutDashboard, end: true },
+interface NavItem {
+  to: string
+  label: string
+  icon: LucideIcon
+}
+
+const navItems: NavItem[] = [
+  { to: "/", label: "数据看板", icon: LayoutDashboard },
   { to: "/questions", label: "题库管理", icon: BookOpen },
   { to: "/questions?source=ugc", label: "UGC 审核", icon: FileCheck },
   { to: "/categories", label: "分类管理", icon: FolderOpen },
@@ -33,9 +40,32 @@ const navItems = [
   { to: "/settings", label: "系统设置", icon: Settings },
 ]
 
+function isNavItemActive(item: NavItem, pathname: string, search: string): boolean {
+  const itemUrl = new URL(item.to, "http://dummy")
+  const itemPath = itemUrl.pathname
+  const itemSearch = itemUrl.search
+
+  if (itemPath === "/") {
+    return pathname === "/" && search === ""
+  }
+
+  if (!pathname.startsWith(itemPath)) {
+    return false
+  }
+
+  // Pathname matches — check search params
+  if (itemSearch) {
+    return search === itemSearch
+  }
+
+  // No search params on nav item — only active if current URL also has no source=ugc
+  return !search.includes("source=ugc")
+}
+
 export function Sidebar() {
   const { logout } = useAuth()
   const navigate = useNavigate()
+  const location = useLocation()
   const [changePasswordOpen, setChangePasswordOpen] = useState(false)
 
   function handleLogout() {
@@ -51,24 +81,24 @@ export function Sidebar() {
         </div>
 
         <nav className="flex-1 space-y-1 p-3">
-          {navItems.map(({ to, label, icon: Icon, end }) => (
-            <NavLink
-              key={to}
-              to={to}
-              end={end}
-              className={({ isActive }) =>
-                cn(
-                  "flex items-center gap-3 rounded-md px-3 py-2 text-sm font-medium transition-colors",
+          {navItems.map((item) => {
+            const isActive = isNavItemActive(item, location.pathname, location.search)
+            return (
+              <button
+                key={item.to}
+                onClick={() => navigate(item.to)}
+                className={cn(
+                  "flex w-full items-center gap-3 rounded-md px-3 py-2 text-sm font-medium transition-colors",
                   isActive
                     ? "bg-sidebar-accent text-sidebar-accent-foreground"
                     : "text-sidebar-foreground/70 hover:bg-sidebar-accent/50 hover:text-sidebar-foreground",
-                )
-              }
+                )}
               >
-              <Icon className="h-4 w-4" />
-              {label}
-            </NavLink>
-          ))}
+                <item.icon className="h-4 w-4" />
+                {item.label}
+              </button>
+            )
+          })}
         </nav>
 
         <div className="border-t p-3 space-y-1">

src/lib/api/skill-tree-api.ts

@@ -1,24 +1,20 @@
 import { apiClient } from "@/lib/api-client"
-import type { PaginatedResponse, ApiResponse } from "@/types/api"
+import type { ApiResponse } from "@/types/api"
 import type { SkillTreeChapter, SkillTreeFormData } from "@/types/skill-tree"
 
 export interface FetchChaptersParams {
-  page?: number
-  limit?: number
   categoryId?: string
 }
 
 export async function fetchChapters(
   params: FetchChaptersParams = {}
-): Promise<PaginatedResponse<SkillTreeChapter>> {
+): Promise<ApiResponse<SkillTreeChapter[]>> {
   const searchParams = new URLSearchParams()
-  if (params.page) searchParams.set("page", String(params.page))
-  if (params.limit) searchParams.set("limit", String(params.limit))
   if (params.categoryId) searchParams.set("categoryId", params.categoryId)
 
   return apiClient
     .get("skill-tree", { searchParams })
-    .json<PaginatedResponse<SkillTreeChapter>>()
+    .json<ApiResponse<SkillTreeChapter[]>>()
 }
 
 export async function createChapter(

src/routes/categories/index.tsx

@@ -209,6 +209,7 @@ export default function CategoriesPage() {
         open={formOpen}
         onOpenChange={setFormOpen}
         category={editingCategory}
+        existingSlugs={categories.map((c) => c.slug)}
         onSubmit={handleFormSubmit}
       />
 

src/routes/knowledge-cards/index.tsx

@@ -124,10 +124,10 @@ export default function KnowledgeCardsPage() {
       accessorKey: "questionStem",
       header: "关联题目",
       cell: ({ row }) => {
-        const stem = row.original.questionStem
+        const stem = row.original.questionStem ?? ""
         return (
           <span className="line-clamp-2 max-w-xs" title={stem}>
-            {stem.length > 60 ? stem.slice(0, 60) + "..." : stem}
+            {stem.length > 60 ? stem.slice(0, 60) + "..." : stem || "—"}
           </span>
         )
       },

src/routes/questions/index.tsx

@@ -16,7 +16,6 @@ import {
   SelectTrigger,
   SelectValue,
 } from "@/components/ui/select"
-import { Tabs, TabsList, TabsTrigger } from "@/components/ui/tabs"
 import {
   Table,
   TableBody,
@@ -51,16 +50,8 @@ import type { Category } from "@/types/category"
 
 const PAGE_SIZE = 20
 
-type SourceTab = "all" | "system" | "ugc"
-
-const SOURCE_TABS = [
-  { value: "all" as const, label: "全部题目" },
-  { value: "system" as const, label: "官方题库" },
-  { value: "ugc" as const, label: "用户投稿" },
-] as const
-
 export default function QuestionsPage() {
-  const [searchParams, setSearchParams] = useSearchParams()
+  const [searchParams] = useSearchParams()
   const [questions, setQuestions] = useState<Question[]>([])
   const [categories, setCategories] = useState<Category[]>([])
   const [loading, setLoading] = useState(true)
@@ -73,21 +64,8 @@ export default function QuestionsPage() {
   const [sortField, setSortField] = useState<"createdAt" | "difficulty" | "updatedAt">("createdAt")
   const [sortOrder, setSortOrder] = useState<"asc" | "desc">("desc")
 
-  // 从 URL 查询参数读取 source，如果没有则默认为 "all"
-  const [sourceTab, setSourceTab] = useState<SourceTab>(
-    () => (searchParams.get("source") as SourceTab) || "all"
-  )
-
-  // 当 sourceTab 改变时，更新 URL
-  useEffect(() => {
-    const newParams = new URLSearchParams(searchParams)
-    if (sourceTab === "all") {
-      newParams.delete("source")
-    } else {
-      newParams.set("source", sourceTab)
-    }
-    setSearchParams(newParams, { replace: true })
-  }, [sourceTab, searchParams, setSearchParams])
+  // 根据 URL 决定模式：有 source=ugc 则为 UGC 审核模式，否则为题库管理模式
+  const isUgcMode = searchParams.get("source") === "ugc"
 
   // 删除对话框
   const [deleteOpen, setDeleteOpen] = useState(false)
@@ -132,7 +110,7 @@ export default function QuestionsPage() {
         difficulty: difficultyFilter !== "all"
           ? (Number(difficultyFilter) as Difficulty)
           : undefined,
-        source: sourceTab !== "all" ? sourceTab : undefined,
+        source: isUgcMode ? "ugc" : "system",
         sortBy: sortField,
         sortOrder,
       })
@@ -143,7 +121,7 @@ export default function QuestionsPage() {
     } finally {
       setLoading(false)
     }
-  }, [page, search, statusFilter, categoryFilter, difficultyFilter, sourceTab, sortField, sortOrder])
+  }, [page, search, statusFilter, categoryFilter, difficultyFilter, isUgcMode, sortField, sortOrder])
 
   useEffect(() => {
     loadQuestions()
@@ -250,7 +228,7 @@ export default function QuestionsPage() {
     categories,
     onDelete: openDelete,
     onStatusChange: handleStatusChange,
-    onReview: sourceTab === "ugc" ? openUgcReview : undefined,
+    onReview: isUgcMode ? openUgcReview : undefined,
   })
 
   // 选择列 + 数据列
@@ -316,20 +294,9 @@ export default function QuestionsPage() {
     <div className="space-y-6">
       {/* 页面头部 */}
       <div className="flex items-center justify-between">
-        <div className="space-y-2">
-          <h1 className="text-2xl font-bold">题库管理</h1>
-          <Tabs value={sourceTab} onValueChange={(val) => { setSourceTab(val as SourceTab); setPage(1) }}>
-            <TabsList>
-              {SOURCE_TABS.map((tab) => (
-                <TabsTrigger key={tab.value} value={tab.value}>
-                  {tab.label}
-                </TabsTrigger>
-              ))}
-            </TabsList>
-          </Tabs>
-        </div>
+        <h1 className="text-2xl font-bold">{isUgcMode ? "UGC 审核" : "题库管理"}</h1>
         <div className="flex gap-2">
-          {sourceTab === "ugc" && (
+          {isUgcMode && (
             <Button variant="outline" size="sm" onClick={() => {/* UGC 批量审核 - 后续实现 */}}>
               <FileCheck className="mr-1 size-4" />
               批量审核
@@ -339,17 +306,19 @@ export default function QuestionsPage() {
             <Download className="mr-1 size-4" />
             {exporting ? "导出中..." : "导出 CSV"}
           </Button>
-          {sourceTab === "system" && (
+          {!isUgcMode && (
             <Button variant="outline" onClick={() => setImportOpen(true)}>
               批量导入
             </Button>
           )}
+          {!isUgcMode && (
             <Button asChild>
               <Link to="/questions/new">
                 <Plus className="size-4" />
                 新建题目
               </Link>
             </Button>
+          )}
         </div>
       </div>
 

src/routes/skill-tree/index.tsx

@@ -35,14 +35,10 @@ import { fetchCategories } from "@/lib/api/category-api"
 import type { SkillTreeChapter, SkillTreeFormData } from "@/types/skill-tree"
 import type { Category } from "@/types/category"
 
-const PAGE_SIZE = 20
-
 export default function SkillTreePage() {
   const [chapters, setChapters] = useState<SkillTreeChapter[]>([])
   const [categories, setCategories] = useState<Category[]>([])
   const [loading, setLoading] = useState(true)
-  const [total, setTotal] = useState(0)
-  const [page, setPage] = useState(1)
   const [categoryFilter, setCategoryFilter] = useState<string>("all")
 
   // 对话框状态
@@ -51,8 +47,6 @@ export default function SkillTreePage() {
   const [deleteOpen, setDeleteOpen] = useState(false)
   const [deletingChapter, setDeletingChapter] = useState<SkillTreeChapter | null>(null)
 
-  const totalPages = Math.max(1, Math.ceil(total / PAGE_SIZE))
-
   // 加载分类列表
   useEffect(() => {
     fetchCategories({}).then((res) => setCategories(res.data))
@@ -62,18 +56,15 @@ export default function SkillTreePage() {
     setLoading(true)
     try {
       const res = await fetchChapters({
-        page,
-        limit: PAGE_SIZE,
         categoryId: categoryFilter !== "all" ? categoryFilter : undefined,
       })
-      setChapters(res.data)
-      setTotal(res.pagination.total)
+      setChapters(res.data ?? [])
     } catch {
       setChapters([])
     } finally {
       setLoading(false)
     }
-  }, [page, categoryFilter])
+  }, [categoryFilter])
 
   useEffect(() => {
     loadChapters()
@@ -173,7 +164,6 @@ export default function SkillTreePage() {
           value={categoryFilter}
           onValueChange={(val) => {
             setCategoryFilter(val)
-            setPage(1)
           }}
         >
           <SelectTrigger className="w-36">
@@ -246,33 +236,6 @@ export default function SkillTreePage() {
         </Table>
       </div>
 
-      {/* 分页 */}
-      {totalPages > 1 && (
-        <div className="flex items-center justify-between text-sm text-muted-foreground">
-          <span>
-            共 {total} 条，第 {page}/{totalPages} 页
-          </span>
-          <div className="flex gap-2">
-            <Button
-              variant="outline"
-              size="sm"
-              disabled={page <= 1}
-              onClick={() => setPage((p) => p - 1)}
-            >
-              上一页
-            </Button>
-            <Button
-              variant="outline"
-              size="sm"
-              disabled={page >= totalPages}
-              onClick={() => setPage((p) => p + 1)}
-            >
-              下一页
-            </Button>
-          </div>
-        </div>
-      )}
-
       {/* 对话框 */}
       <SkillTreeFormDialog
         open={formOpen}