#headless browser 环境必须做端到端 smoke test

• 远程浏览器候选端点的健康/渲染契约判定 20260427013139000
• 远程浏览器后端的前置条件是网络可达与端点可发现 20260427010702000
• 远程渲染入口的最小验收 20260426014049000
• Playwright bundled browser startup can fail on host ABI mismatch 20260426012736000