fix: harden real backend admin workflows and ui

src/layouts/AppShell.tsx

@@ -9,7 +9,6 @@ import {
   LogOut,
   PanelLeftClose,
   PanelLeftOpen,
-  Search,
 } from 'lucide-react';
 import { NavLink, Outlet, useNavigate } from 'react-router-dom';
 import { clearSession } from '@/api/session';
@@ -144,10 +143,6 @@ export function AppShell({
             >
               <ToggleIcon size={18} />
             </button>
-            <label className="topbar-search">
-              <Search size={17} />
-              <input placeholder="搜索模板、客户、发送记录" />
-            </label>
           </div>
 
           <div className="topbar-actions">