self-healing 3

Graceful restart + client auto-reconnect + cross-restart goal continuation for DeepSeek Harness (dsh). After a plugin update dsh-phoenix restarts dsh at a safe idle boundary, keeps the browser page connected, and resumes a running goal so a task can keep

DSH 插件：启动时自动寻找对端主机并建立 SSH 双向隧道，断线自愈。SSH tunnel auto-discovery and self-healing for DeepSeek Harness.

Repairs malformed tool-call blocks in the outbound DSH model request, so one degenerate generation cannot permanently poison a session.