fix(web): redirect unauthenticated users back after login

web/src/app/layout.tsx

@@ -71,6 +71,7 @@ export function Layout() {
             ) : (
               <Link
                 to="/login"
+                search={{ returnTo: '' }}
                 className="text-sm font-medium text-muted-foreground hover:text-foreground transition-colors"
                 activeProps={{ className: 'text-primary' }}
               >

web/src/app/router.tsx

@@ -42,10 +42,17 @@ const rootRoute = createRootRoute({
   component: Layout,
 })
 
-async function requireAuth() {
+function buildReturnTo(location: { pathname: string; searchStr?: string; hash?: string }) {
+  return `${location.pathname}${location.searchStr ?? ''}${location.hash ?? ''}`
+}
+
+async function requireAuth({ location }: { location: { pathname: string; searchStr?: string; hash?: string } }) {
   const user = await getCurrentUser()
   if (!user) {
-    throw redirect({ to: '/login' })
+    throw redirect({
+      to: '/login',
+      search: { returnTo: buildReturnTo(location) },
+    })
   }
   return { user }
 }
@@ -59,12 +66,18 @@ const skillsRoute = createRoute({
 const loginRoute = createRoute({
   getParentRoute: () => rootRoute,
   path: 'login',
+  validateSearch: (search: Record<string, unknown>) => ({
+    returnTo: typeof search.returnTo === 'string' ? search.returnTo : '',
+  }),
   component: LoginPage,
 })
 
 const registerRoute = createRoute({
   getParentRoute: () => rootRoute,
   path: 'register',
+  validateSearch: (search: Record<string, unknown>) => ({
+    returnTo: typeof search.returnTo === 'string' ? search.returnTo : '',
+  }),
   component: RegisterPage,
 })
 
@@ -152,8 +165,8 @@ const dashboardReviewDetailRoute = createRoute({
 const dashboardPromotionsRoute = createRoute({
   getParentRoute: () => rootRoute,
   path: 'dashboard/promotions',
-  beforeLoad: async () => {
-    const { user } = await requireAuth()
+  beforeLoad: async (ctx) => {
+    const { user } = await requireAuth(ctx)
     if (!user.platformRoles?.includes('SKILL_ADMIN') && !user.platformRoles?.includes('SUPER_ADMIN')) {
       throw redirect({ to: '/dashboard' })
     }
@@ -199,8 +212,8 @@ const settingsAccountsRoute = createRoute({
 const adminUsersRoute = createRoute({
   getParentRoute: () => rootRoute,
   path: 'admin/users',
-  beforeLoad: async () => {
-    const { user } = await requireAuth()
+  beforeLoad: async (ctx) => {
+    const { user } = await requireAuth(ctx)
     if (!user.platformRoles?.includes('USER_ADMIN') && !user.platformRoles?.includes('SUPER_ADMIN')) {
       throw redirect({ to: '/dashboard' })
     }
@@ -212,8 +225,8 @@ const adminUsersRoute = createRoute({
 const adminAuditLogRoute = createRoute({
   getParentRoute: () => rootRoute,
   path: 'admin/audit-log',
-  beforeLoad: async () => {
-    const { user } = await requireAuth()
+  beforeLoad: async (ctx) => {
+    const { user } = await requireAuth(ctx)
     if (!user.platformRoles?.includes('AUDITOR') && !user.platformRoles?.includes('SUPER_ADMIN')) {
       throw redirect({ to: '/dashboard' })
     }

web/src/pages/login.tsx

@@ -1,4 +1,4 @@
-import { Link } from '@tanstack/react-router'
+import { Link, useNavigate, useSearch } from '@tanstack/react-router'
 import { useState } from 'react'
 import { LoginButton } from '@/features/auth/login-button'
 import { useLocalLogin } from '@/features/auth/use-local-auth'
@@ -7,15 +7,19 @@ import { Input } from '@/shared/ui/input'
 import { Tabs, TabsContent, TabsList, TabsTrigger } from '@/shared/ui/tabs'
 
 export function LoginPage() {
+  const navigate = useNavigate()
+  const search = useSearch({ from: '/login' })
   const loginMutation = useLocalLogin()
   const [username, setUsername] = useState('')
   const [password, setPassword] = useState('')
 
+  const returnTo = search.returnTo && search.returnTo.startsWith('/') ? search.returnTo : '/dashboard'
+
   async function handleSubmit(event: React.FormEvent<HTMLFormElement>) {
     event.preventDefault()
     try {
       await loginMutation.mutateAsync({ username, password })
-      window.location.href = '/dashboard'
+      await navigate({ to: returnTo })
     } catch {
       // mutation state drives the error UI
     }
@@ -73,7 +77,11 @@ export function LoginPage() {
                 <p className="text-center text-sm text-muted-foreground">
                   还没有账号？
                   {' '}
-                  <Link to="/register" className="font-medium text-primary hover:underline">
+                  <Link
+                    to="/register"
+                    search={{ returnTo }}
+                    className="font-medium text-primary hover:underline"
+                  >
                     立即注册
                   </Link>
                 </p>

web/src/pages/register.tsx

@@ -1,4 +1,4 @@
-import { Link } from '@tanstack/react-router'
+import { Link, useNavigate, useSearch } from '@tanstack/react-router'
 import { useState } from 'react'
 import { LoginButton } from '@/features/auth/login-button'
 import { useLocalRegister } from '@/features/auth/use-local-auth'
@@ -8,16 +8,20 @@ import { Input } from '@/shared/ui/input'
 import { Tabs, TabsContent, TabsList, TabsTrigger } from '@/shared/ui/tabs'
 
 export function RegisterPage() {
+  const navigate = useNavigate()
+  const search = useSearch({ from: '/register' })
   const registerMutation = useLocalRegister()
   const [username, setUsername] = useState('')
   const [email, setEmail] = useState('')
   const [password, setPassword] = useState('')
 
+  const returnTo = search.returnTo && search.returnTo.startsWith('/') ? search.returnTo : '/dashboard'
+
   async function handleSubmit(event: React.FormEvent<HTMLFormElement>) {
     event.preventDefault()
     try {
       await registerMutation.mutateAsync({ username, email, password })
-      window.location.href = '/dashboard'
+      await navigate({ to: returnTo })
     } catch {
       // mutation state drives the error UI
     }
@@ -80,7 +84,11 @@ export function RegisterPage() {
                 <p className="text-center text-sm text-muted-foreground">
                   已有账号？
                   {' '}
-                  <Link to="/login" className="font-medium text-primary hover:underline">
+                  <Link
+                    to="/login"
+                    search={{ returnTo }}
+                    className="font-medium text-primary hover:underline"
+                  >
                     返回登录
                   </Link>
                 </p>

web/src/pages/skill-detail.tsx

@@ -1,4 +1,4 @@
-import { useParams, useNavigate } from '@tanstack/react-router'
+import { useParams, useNavigate, useRouterState } from '@tanstack/react-router'
 import { useMutation, useQueryClient } from '@tanstack/react-query'
 import { MarkdownRenderer } from '@/features/skill/markdown-renderer'
 import { FileTree } from '@/features/skill/file-tree'
@@ -20,6 +20,7 @@ import {
 
 export function SkillDetailPage() {
   const navigate = useNavigate()
+  const location = useRouterState({ select: (s) => s.location })
   const queryClient = useQueryClient()
   const { namespace, slug } = useParams({ from: '/@$namespace/$slug' })
   const { user, hasRole } = useAuth()
@@ -53,7 +54,12 @@ export function SkillDetailPage() {
   })
 
   const requireLogin = () => {
-    navigate({ to: '/login' })
+    navigate({
+      to: '/login',
+      search: {
+        returnTo: `${location.pathname}${location.searchStr}${location.hash}`,
+      },
+    })
   }
 
   if (isLoadingSkill) {