fix: account open fire-and-forget; open-browser direct+sync

scripts/service/open_child_runner.py

@@ -1,5 +1,9 @@
-"""Playwright 仅打开浏览器子进程：由 browser_service.cmd_open 启动，argv[1] 为 JSON 配置路径。"""
+"""Playwright 仅打开浏览器子进程：由 browser_service.cmd_open 启动，argv[1] 为 JSON 配置路径。
+
+父进程拉起后即返回；本子进程自行维护浏览器生命周期，读完配置后删除临时 JSON。
+"""
 import json
+import os
 import sys
 
 from playwright.sync_api import sync_playwright
@@ -12,8 +16,14 @@ from util.playwright_stealth import (
 
 
 def main():
-    with open(sys.argv[1], encoding="utf-8") as f:
+    cfg_path = sys.argv[1]
+    with open(cfg_path, encoding="utf-8") as f:
         c = json.load(f)
+    try:
+        os.unlink(cfg_path)
+    except OSError:
+        pass
+
     with sync_playwright() as p:
         args, ignore_automation = persistent_context_launch_parts()
         lc_kw = dict(