fix: 修正 weixin barrel export 中 interface 的导出方式

ChannelPermissionRequestParams 是纯类型，必须用 export type 导出，
否则 Bun 运行时会报 "export not found" 错误。

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: claude-code-best

packages/weixin/src/index.ts

@@ -96,13 +96,13 @@ export type {
 
 // Permission state
 export {
-  ChannelPermissionRequestParams,
   setActivePermissionChat,
   getActivePermissionChat,
   savePendingPermission,
   consumePendingPermission,
 } from './permissions.js'
 export type {
+  ChannelPermissionRequestParams,
   PendingPermissionRequest,
   ActivePermissionChat,
 } from './permissions.js'