fix: SSH update modal polls locally, collapsed log by default (v0.5.9)

Modal owns job poll and completion UI with countdown; log hidden until user clicks Показать лог; db.refresh on remote-job; cache-bust poll requests.

backend/app/api/v1/hosts.py

@@ -653,6 +653,7 @@ def get_host_remote_job(
     host = db.get(Host, host_id)
     if host is None:
         raise HTTPException(status_code=404, detail="Host not found")
+    db.refresh(host)
     return HostRemoteActionJobResponse(**get_remote_action_status(host))