fix: reclaim idle remote runtimes and retire replaced agents

Remote tasks could leave idle Runtime processes behind, and replaced Agent installations lacked a drain-and-exit lifecycle. Keep the current Agent resident, let displaced Agents finish existing work and reconnect for its results, then retire them without restarting obsolete installations. Reclaim Runtime processes when their last active task finishes, preserve pending questions and shared active tasks, and restore conversation history when the next turn starts. Remove the Remote Projects technical preview label from settings, errors, tests, and current documentation; the feature remains disabled by default. Validation recorded during implementation: 213 lifecycle tests and 28 focused UI/IPC tests passed, as did SettingsPanel and lint. Linux x64 real-Host checks used 8 provider requests. Broader tests and final typecheck encountered unrelated concurrent changes; details and coverage limits are documented. Release note: 远程任务结束后自动释放空闲运行进程，下一轮对话恢复历史；更新后的旧 Agent 等待已有任务完成再退出，当前 Agent 保持常驻。远程项目移除“技术预览”标识，仍默认关闭。
2026-09-23 17:37:14 +08:00
parent cdd573778c
commit 83a48a4079
29 changed files with 402 additions and 63 deletions
@@ -164,6 +164,10 @@ daemon 参与。两种 acquisition 的差别只在于如何把同一个签名 co
 5. Main 确认 adoption 后显式执行 cleanup。cleanup 失败不回滚已经健康的 Agent/Runtime，
   也不阻塞下一次更新。

+新安装成为 current 后，旧 Agent 排空已有任务再退出，空闲旧 Agent 直接退出；当前 Agent
+可以常驻。Runtime 回收、待答问题与旧任务重连的规则见
+[远程主机技术设计](./technical-design.md)。
+
 这不是两个并行安装管理器，也不存在把 Agent 与 Runtime payload 逐文件走 SFTP 安装的
 第二条路径。两种 acquisition 共享相同的 prepare、commit、adoption、finalize 与 cleanup。