feat(web): restore legacy channel editor

apps/web_v1/scripts/structure-check.mjs

@@ -136,8 +136,12 @@ for (const required of ['status-online-dot', 'status-upgrade', 'status-system',
   if (!statusbarSource.includes(required)) failures.push(`project statusbar must restore ${required}`)
 }
 
+const newChannelSource = readFileSync('src/pages/projects/project-new-channel.tsx', 'utf8')
+for (const required of ['保存频道', '频道名称', '频道类型', '链接地址', '创建后可接入的内容']) {
+  if (!newChannelSource.includes(required)) failures.push(`new channel page must restore ${required}`)
+}
+
 const unsupportedControls = [
-  { file: 'src/pages/projects/project-new-channel.tsx', required: '暂未开放', forbidden: ['保存频道', '<Input', '<Select', '<TextArea'] },
   { file: 'src/pages/projects/project-topbar.tsx', forbidden: ['停靠左边', '停靠右边', 'DockIcon', 'isDesktopRuntime'] },
 ]
 for (const check of unsupportedControls) {