fix(web): rename AI channel to AI 对话

apps/web_v1/src/api/mappers.tsx

@@ -95,7 +95,7 @@ function channelLabel(channel: WorkspaceChannelDTO) {
     case 'tasks':
       return '工作计划'
     case 'ai_sessions':
-      return 'AI 助手'
+      return 'AI 对话'
     case 'notes_sources':
       return '笔记资料'
     case 'cron':

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

@@ -110,7 +110,7 @@ export function ProjectAi({
     <div className="project-channel-page project-ai-page overview-page">
       <div className="overview-head">
         <div>
-          <Title heading={4}>AI 助手</Title>
+          <Title heading={4}>AI 对话</Title>
           <Text type="secondary">创建项目内普通会话；不会自动生成任务、笔记或资料。</Text>
         </div>
       </div>

apps/web_v1/src/pages/workspace-body.tsx

@@ -80,7 +80,7 @@ export function WorkspacePage({
   const workspaceMetrics = [
     { title: '项目总数', value: projects.length, delta: `${urgentProjects} 个高优先级`, icon: <IconDashboard />, color: 'arcoblue' },
     { title: '未完成计划', value: unfinishedTasks.length, delta: '跨项目聚合', icon: <IconCheckCircleFill />, color: 'green' },
-    { title: 'AI智能体', value: aiSessions.length, delta: '项目内上下文', icon: <IconRobot />, color: 'purple' },
+    { title: 'AI 对话', value: aiSessions.length, delta: '项目内上下文', icon: <IconRobot />, color: 'purple' },
     { title: '知识资料', value: notes.length, delta: '笔记与资料合计', icon: <IconFile />, color: 'cyan' },
   ]
 
@@ -89,7 +89,7 @@ export function WorkspacePage({
       <div className="overview-head">
         <div>
           <Title heading={4}>工作台</Title>
-          <Text type="secondary">所有项目的统一工作台，汇总项目任务、AI智能体和知识资产。</Text>
+          <Text type="secondary">所有项目的统一工作台，汇总项目任务、AI 对话和知识资产。</Text>
         </div>
       </div>