修复订阅授权返回后生成中断

生成动作先进入拼图进度页并立即发起生成

订阅授权改为非阻塞尝试，避免闪回卡住提交

移除订阅结果回写 web-view URL 导致回首页的逻辑

更新小程序订阅消息授权与发送边界文档

miniprogram/pages/web-view/index.js

@@ -15,7 +15,6 @@ const MINI_PROGRAM_CLIENT_TYPE = 'mini_program';
 const MINI_PROGRAM_CLIENT_RUNTIME = 'wechat_mini_program';
 const CLIENT_INSTANCE_STORAGE_KEY = 'genarrative:mini-program-client-instance-id';
 const PAY_RESULT_STORAGE_KEY = 'genarrative:wechat-pay-result';
-const SUBSCRIBE_RESULT_STORAGE_KEY = 'genarrative:wechat-subscribe-result';
 const AUTH_RESULT_STORAGE_KEY = 'genarrative:mini-program-auth-result';
 const AUTH_ACTION_LOGIN = 'login';
 const PAY_RESULT_RECHECK_DELAY_MS = 120;
@@ -606,10 +605,8 @@ Page({
     }
 
     this.consumePayResult();
-    this.consumeSubscribeResult();
     setTimeout(() => {
       this.consumePayResult();
-      this.consumeSubscribeResult();
     }, PAY_RESULT_RECHECK_DELAY_MS);
   },
 
@@ -625,18 +622,6 @@ Page({
     }
   },
 
-  consumeSubscribeResult() {
-    const result = wx.getStorageSync(SUBSCRIBE_RESULT_STORAGE_KEY);
-    if (result && this.data.webViewUrl) {
-      wx.removeStorageSync(SUBSCRIBE_RESULT_STORAGE_KEY);
-      this.setData({
-        webViewUrl: appendHashParams(this.data.webViewUrl, {
-          wx_subscribe_result: result,
-        }),
-      });
-    }
-  },
-
   async handleGetPhoneNumber(event) {
     if (!this.data.authResult || !this.data.authResult.token) {
       this.handleRetryLogin();