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perf(node-agent-api): 会话提速与 VNC 第一阶段优化 - #10
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October 7, 2026 13:19
批量原子保存状态与流式事件，复用健康 Harness 线程，并以常驻只读通道获取最新桌面归属。 为查看器隔离授权路径，预热当前已有桌面的只读连接并复用同一 iframe，提供单资源 noVNC 核心构建与真实首帧验证。 Constraint: 保留服务器只读过滤、控制租约、撤销、配额和持久化失败关闭语义 Validation: Node Agent API 239/239；受控 Chromium 五组与真实只读桌面验收通过 Known-failure: 全量检查中未改动的 D17 对拍引用旧官方 chunk 名称；未修改或跳过 Scope-risk: moderate
说明查看器构建、独立授权和只读预热，并保留首轮及第一阶段测量的样本数、失败与限制。 记录本机重载保留密钥和会话，以及不实施第二阶段的决定。 Constraint: 不将合成夹具耗时视为真实 Docker 首帧或稳定线上 p95 Confidence: high
批处理测试冻结全局 setTimeout 时，Linux CI 的 fetch 客户端会在 JSON/SSE 边界超时。改用原生 HTTP 请求和流迭代器，让真实网络传输独立于批处理虚拟时钟。 Constraint: 保留全部事件持久化、顺序、去重和游标重连断言及五秒边界 Validation: Codex 适配器 52/52、Node Agent API 239/239 通过 Scope-risk: narrow
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网页会话提交和打开 VNC 会重复准备运行环境、加载查看器及建立连接。本次减少这些重复开销：合并状态与事件的原子写入，复用健康 Harness 线程，用常驻只读通道读取最新桌面归属，并为当前会话预热、保留一个独立授权的查看器。
查看器核心可构建为一个约 191KB 的资源；静态资源请求由实测的 83 个降为 1 个。服务器继续执行只读输入过滤、控制租约、权限撤销、容器/分配变化校验和原有持久化语义。当前查看器的重复观看可复用连接；接管和交还仍采用原来的重新授权流程。
验证：
本机已通过原 LaunchAgent 重载，原密钥及 13 个会话身份保持一致。没有更换模型、重建容器或重打包 App；近期多查看器池和同连接接管未实施。密钥、运行状态、实际会话内容、桌面图片和临时测量证据不进入提交。
构建与测量步骤见
tools/node-agent-api/README.md、tools/node-agent-api/bench/README.md；结果及限制见docs/NODE_AGENT_API_PERFORMANCE.md、docs/NODE_AGENT_VNC_PHASE_ONE.md。