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

src/services/wechatMiniProgramSubscribe.test.ts

@@ -34,15 +34,35 @@ describe('wechatMiniProgramSubscribe', () => {
 
     expect(requested).toBe(true);
     expect(navigateTo).toHaveBeenCalledWith({
-      url: expect.stringMatching(
-        /^\/pages\/subscribe-message\/index\?.*autoRequest=1/u,
-      ),
+      url: expect.stringMatching(/^\/pages\/subscribe-message\/index\?/u),
       success: expect.any(Function),
       fail: expect.any(Function),
     });
+    expect(navigateTo.mock.calls[0]?.[0].url).not.toContain('autoRequest=1');
     expect(window.location.hash).toBe('');
   });
 
+  test('keeps waiting even when native page returns immediately after navigate success', async () => {
+    const navigateTo = vi.fn((options) => {
+      window.dispatchEvent(new Event('focus'));
+      options.success?.();
+    });
+    window.history.replaceState(
+      null,
+      '',
+      '/creation/puzzle?clientRuntime=wechat_mini_program',
+    );
+    window.wx = {
+      miniProgram: {
+        navigateTo,
+      },
+    };
+
+    const requested = await requestGenerationResultSubscribePermission();
+
+    expect(requested).toBe(true);
+  });
+
   test('still accepts legacy hash result from native mini program page', async () => {
     const navigateTo = vi.fn((options) => {
       options.success?.();