fix(desktop/weixin-gzh): tolerate numeric appMsgId and classify login timeout

The MP draft API sometimes returns appMsgId as a number or under the
appmsgid alias; coerce both shapes before treating the response as a
success. Also extend the platform auth adapter to recognize 登录超时/
请重新登录 wording so the runtime drives the account back to re-auth.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/desktop-client/src/main/adapters/weixin-gzh.ts

@@ -45,7 +45,8 @@ type WeixinCropResponse = {
 };
 
 type WeixinOperateResponse = {
-  appMsgId?: string;
+  appMsgId?: string | number;
+  appmsgid?: string | number;
   ret?: number;
   base_resp?: {
     ret?: number;
@@ -376,6 +377,17 @@ function formatWeixinError(response: WeixinOperateResponse | null | undefined):
   return typeof ret === "number" ? map[ret] || `同步到草稿箱失败 (错误码: ${ret})` : "同步到草稿箱失败";
 }
 
+function normalizeWeixinArticleId(response: WeixinOperateResponse | null | undefined): string {
+  const value = response?.appMsgId ?? response?.appmsgid;
+  if (typeof value === "number") {
+    return Number.isFinite(value) ? String(value) : "";
+  }
+  if (typeof value === "string") {
+    return value.trim();
+  }
+  return "";
+}
+
 function buildOperateForm(
   context: PublishAdapterContext,
   meta: WeixinMeta,
@@ -558,7 +570,7 @@ export const weixinGzhAdapter: PublishAdapter = {
         },
       }));
 
-      const articleId = response.appMsgId?.trim() || "";
+      const articleId = normalizeWeixinArticleId(response);
       if (!articleId) {
         const message = formatWeixinError(response);
         if (isWeixinChallengeMessage(message)) {