feat(web): 网站底部悬挂工信部备案号

- 新增 IcpFooter 组件: 豫ICP备2026009947号-2, 链接 https://beian.miit.gov.cn/
- 登录页底部固定显示(访客可见, 备案审查入口)
- 主布局内容区底部显示(登录后所有页面可见)

apps/web/src/app/page.tsx

@@ -16,6 +16,7 @@ import ReportCenterPage from '@/components/ReportCenterPage'
 import RuleCenterPage from '@/components/RuleCenterPage'
 import SystemMonitorPage from '@/components/SystemMonitorPage'
 import AdminPage from '@/components/AdminPage'
+import IcpFooter from '@/components/IcpFooter'
 
 type Page = 'overview' | 'inquiry' | 'image' | 'product' | 'comparison' | 'lead-detail' | 'report-center' | 'rule-center' | 'system-monitor' | 'admin-tenants' | 'admin-users' | 'admin-stats' | 'admin-configs' | 'admin-plans'
 
@@ -43,7 +44,7 @@ export default function Home() {
     <ToastProvider>
       <div className="flex min-h-screen">
         <Sidebar current={page} onNavigate={setPage} user={user} onLogout={logout} />
-        <main className="flex-1 ml-64 p-8">
+        <main className="flex-1 ml-64 p-8 flex flex-col">
           <ErrorBoundary>
             {page === 'overview' && <OverviewPage onNavigate={(p) => setPage(p as Page)} />}
             {page === 'inquiry' && <InquiryPage onLeadDetail={handleLeadDetail} />}
@@ -56,6 +57,8 @@ export default function Home() {
             {page === 'system-monitor' && <SystemMonitorPage />}
             {page.startsWith('admin-') && <AdminPage section={page.replace('admin-', '') as any} />}
           </ErrorBoundary>
+          <div className="flex-1" />
+          <IcpFooter />
         </main>
       </div>
     </ToastProvider>

apps/web/src/components/IcpFooter.tsx

@@ -0,0 +1,14 @@
+export default function IcpFooter() {
+  return (
+    <div className="py-4 text-center">
+      <a
+        href="https://beian.miit.gov.cn/"
+        target="_blank"
+        rel="noreferrer noopener"
+        className="text-xs text-on-surface-variant hover:text-secondary transition-colors"
+      >
+        豫ICP备2026009947号-2
+      </a>
+    </div>
+  )
+}

apps/web/src/components/LoginPage.tsx

@@ -2,6 +2,7 @@
 
 import { useState } from 'react'
 import { useAuth } from './AuthProvider'
+import IcpFooter from './IcpFooter'
 
 export default function LoginPage() {
   const { login } = useAuth()
@@ -24,7 +25,7 @@ export default function LoginPage() {
   }
 
   return (
-    <div className="min-h-screen bg-[#f7f9fb] flex items-center justify-center">
+    <div className="min-h-screen bg-[#f7f9fb] relative flex items-center justify-center">
       <div className="w-full max-w-md">
         <div className="bg-white rounded-2xl shadow-sm border border-border-subtle p-10">
           <div className="text-center mb-10">
@@ -82,6 +83,9 @@ export default function LoginPage() {
           </div>
         </div>
       </div>
+      <div className="absolute bottom-0 left-0 right-0">
+        <IcpFooter />
+      </div>
     </div>
   )
 }