fix: retry launch page.goto to absorb transient DNS/timeout

Third launch failure this session (after two 顺心 load-timeouts and a 中通 ERR_NAME_NOT_RESOLVED) — each a transient network blip that killed the whole worker because launch_and_prepare opened sites with no retry. Wrap each site open+goto in _open_page: up to 3 attempts (2s apart) on domcontentloaded, so transient DNS/timeout is absorbed; only persistent failure (all 3) aborts. All 5 sites + 安能 now launch clean.

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

inbound_verify/runtime.py

@@ -299,23 +299,39 @@ def launch_and_prepare(debug_mode=False, debug_target=""):
     print("\n====================================================")
     print("【启动】正在打开各站点页面...")
     print("====================================================")
+
+    def _open_page(label, attempts=3):
+        """开一个页面并 goto(url, domcontentloaded)；容忍瞬时 DNS/超时抖动重试，全失败才抛。
+        domcontentloaded：DOM 就绪即返回，不等慢资源(广告/图片)的 load 事件，
+        避免某站 load 超 30s / 瞬时 DNS 失败导致整个 worker 启动失败。就绪轮询自会判登录态。"""
+        last = None
+        for i in range(1, attempts + 1):
+            pg = context.new_page()
+            try:
+                pg.goto(url, wait_until="domcontentloaded")
+                return pg
+            except Exception as e:
+                last = e
+                try:
+                    pg.close()
+                except Exception:
+                    pass
+                print(f"⚠️ 打开【{label}】第 {i}/{attempts} 次失败: {e}")
+                if i < attempts:
+                    time.sleep(2)
+        raise RuntimeError(f"打开【{label}】连续 {attempts} 次失败: {last}")
+
     for site_name, url in active_sites.items():
         if site_name == "顺心":
             # 顺心：两个归属地账号在同一窗口各开一个标签页
             sx_pages = []
             for acct in range(1, 3):
                 print(f">> 正在启动【顺心】账号{acct}标签页: {url}")
-                sx_page = context.new_page()
-                # domcontentloaded：DOM 就绪即返回，不等慢资源(广告/图片)的 load 事件，
-                # 避免顺心等站点 load 超 30s 导致整个 worker 启动失败。就绪轮询自会判登录态。
-                sx_page.goto(url, wait_until="domcontentloaded")
-                sx_pages.append(sx_page)
+                sx_pages.append(_open_page(f"顺心账号{acct}"))
             pages_map["顺心"] = sx_pages
         else:
             print(f">> 正在启动【{site_name}】页面: {url}")
-            page = context.new_page()
-            page.goto(url, wait_until="domcontentloaded")
-            pages_map[site_name] = page
+            pages_map[site_name] = _open_page(site_name)
 
     # 4. 安能 Electron
     anneng_proc = None