feat(web): restore legacy channel editor

apps/web_v1/src/pages/projects/project-new-channel.tsx

@@ -1,7 +1,9 @@
-import { Card, Empty, Typography } from '@arco-design/web-react'
+import { Button, Card, Input, Select, Space, Tag, Typography } from '@arco-design/web-react'
+import { IconApps, IconLink, IconPlus } from '@arco-design/web-react/icon'
 import type { ProjectWorkspace } from './project-types'
 
 const { Title, Text } = Typography
+const { TextArea } = Input
 
 export function ProjectNewChannel({ activeWorkspace }: { activeWorkspace: ProjectWorkspace }) {
   return (
@@ -9,11 +11,51 @@ export function ProjectNewChannel({ activeWorkspace }: { activeWorkspace: Projec
       <div className="overview-head">
         <div>
           <Title heading={4}>新建频道</Title>
-          <Text type="secondary">{activeWorkspace.project.name} 暂不支持自定义频道或外部链接接入。</Text>
+          <Text type="secondary">{activeWorkspace.project.name} 的频道入口配置，用于接入外部页面、资料集合或项目流程。</Text>
         </div>
+        <Button type="primary" icon={<IconPlus />}>保存频道</Button>
       </div>
+
+      <Card className="queue-section channel-editor-card" bordered>
+        <Space direction="vertical" size={12} className="action-form">
+          <label>
+            <Text>频道名称</Text>
+            <Input placeholder="例如：客户研究频道" />
+          </label>
+          <label>
+            <Text>频道类型</Text>
+            <Select defaultValue="link">
+              <Select.Option value="link">外部链接</Select.Option>
+              <Select.Option value="source">资料集合</Select.Option>
+              <Select.Option value="workflow">项目流程</Select.Option>
+            </Select>
+          </label>
+          <label>
+            <Text>图标</Text>
+            <Input placeholder="例如：link / user / file" prefix={<IconApps />} />
+          </label>
+          <label>
+            <Text>链接地址</Text>
+            <Input placeholder="https://example.com/channel" prefix={<IconLink />} />
+          </label>
+          <label>
+            <Text>说明</Text>
+            <TextArea rows={4} placeholder="频道用途、维护规则或采集说明" />
+          </label>
+        </Space>
+      </Card>
+
       <Card className="queue-section" bordered>
-        <Empty description="自定义频道暂未开放" />
+        <div className="section-header">
+          <Title heading={6}>创建后可接入的内容</Title>
+          <Tag color="gray">配置预览</Tag>
+        </div>
+        <Space wrap>
+          <Tag color="arcoblue">外部资料库</Tag>
+          <Tag color="green">项目流程页</Tag>
+          <Tag color="orange">RSS/探索结果</Tag>
+          <Tag color="purple">AI 对话上下文</Tag>
+        </Space>
       </Card>
     </div>
   )