feat(h5): unify WeChat OAuth under m.runxian.top path routing

Serve user/shop/partner H5 under /user/, /shop/, /partner/ on a single authorized domain; update nginx, SSL script, and router base paths.

Co-authored-by: Cursor <cursoragent@cursor.com>

packages/weixin-sdk/src/index.ts

@@ -1,4 +1,5 @@
 export { isWechatBrowser, isMiniProgram, getRuntimePlatform } from './env';
+export { getRouterBasename, toAppPath, isOnAppPath } from './app-path';
 export { initWechatJssdk, ensureJssdkReady, isJssdkReady, normalizeJssdkPageUrl, stripOAuthParamsFromLocation } from './jssdk';
 export {
   getWechatLocation,