fix: remove AI agent page header

apps/web_v1/src/pages/projects/project-ai.tsx

@@ -10,18 +10,11 @@ import type { AISession, ProjectWorkspace } from './project-types'
 const { Title, Text } = Typography
 
 export function ProjectAi({ activeWorkspace, onSelectItem }: { activeWorkspace: ProjectWorkspace; onSelectItem: (title: string) => void }) {
-  const { aiSessions, project } = activeWorkspace
+  const { aiSessions } = activeWorkspace
   const groupedSessions = groupSessions(aiSessions)
 
   return (
     <div className="project-channel-page project-ai-page overview-page">
-      <div className="overview-head">
-        <div>
-          <Title heading={4}>AI智能体</Title>
-          <Text type="secondary">{project.name} 的项目内智能体工作台，选择专家后开始上下文对话。</Text>
-        </div>
-      </div>
-
       <div className="agent-chat-shell">
         <Card className="agent-session-list queue-section" bordered>
           <Button className="agent-new-chat" icon={<IconPlusCircle />}>