refactor(web): Dashboard 页面统一改为 CSR 模式

将所有 dashboard 路由组页面改为客户端组件，避免 zustand persist 导致的 hydration mismatch 问题。

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/web/src/app/(dashboard)/dashboard/page.tsx

@@ -1,4 +1,4 @@
-import type { Metadata } from 'next';
+'use client';
 
 import {
   DashboardStats,
@@ -6,10 +6,6 @@ import {
   RecentActivity,
 } from '@/components/dashboard';
 
-export const metadata: Metadata = {
-  title: '仪表盘',
-};
-
 export default function DashboardPage() {
   return (
     <div className="space-y-6">

apps/web/src/app/(dashboard)/profile/page.tsx

@@ -1,4 +1,4 @@
-import type { Metadata } from 'next';
+'use client';
 
 import { PasswordForm } from '@/components/forms/PasswordForm';
 import { ProfileForm } from '@/components/forms/ProfileForm';
@@ -10,10 +10,6 @@ import {
   CardTitle,
 } from '@/components/ui/card';
 
-export const metadata: Metadata = {
-  title: '个人中心',
-};
-
 export default function ProfilePage() {
   return (
     <div className="space-y-6">

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

@@ -1,11 +1,7 @@
-import type { Metadata } from 'next';
+'use client';
 
 import { ThemeSettings, SidebarSettings } from '@/components/settings';
 
-export const metadata: Metadata = {
-  title: '系统设置',
-};
-
 export default function SettingsPage() {
   return (
     <div className="space-y-6">

apps/web/src/app/(dashboard)/users/page.tsx

@@ -1,4 +1,4 @@
-import type { Metadata } from 'next';
+'use client';
 
 import {
   Card,
@@ -9,10 +9,6 @@ import {
 } from '@/components/ui/card';
 import { UsersTable } from '@/components/users/UsersTable';
 
-export const metadata: Metadata = {
-  title: '用户管理',
-};
-
 export default function UsersPage() {
   return (
     <div className="space-y-6">