fix: remote job stuck after SSH update completes (v0.5.4)

Treat agent_update_state as source of truth for active job; poll log thread no longer overwrites finished status.

backend/app/services/host_remote_actions.py

@@ -126,7 +126,10 @@ def _poll_ssh_update_log_loop(
         session = SessionLocal()
         try:
             row = session.get(Host, host_id)
-            if row is None or row.agent_update_state != "running":
+            if row is None or (row.agent_update_state or "").strip().lower() != "running":
+                continue
+            payload = dict(row.remote_action or {})
+            if (payload.get("status") or "").strip().lower() != "running":
                 continue
             cfg = get_effective_linux_admin_config(session)
             if not cfg.configured:
@@ -148,7 +151,12 @@ def _poll_ssh_update_log_loop(
                     continue
                 if tail:
                     break
+            session.refresh(row)
+            if (row.agent_update_state or "").strip().lower() != "running":
+                continue
             payload = dict(row.remote_action or {})
+            if (payload.get("status") or "").strip().lower() != "running":
+                continue
             if tail:
                 payload["output"] = tail
                 payload["message"] = "Выполняется обновление… (лог с хоста)"
@@ -339,8 +347,16 @@ def get_remote_action_status(host: Host) -> dict[str, Any]:
     payload = dict(host.remote_action or {})
     if not payload:
         return {"active": False, "host_id": host.id}
-    status = payload.get("status") or host.agent_update_state or "unknown"
-    active = status == "running" or host.agent_update_state == "running"
+    agent_state = (host.agent_update_state or "").strip().lower()
+    if agent_state == "running":
+        active = True
+        status = payload.get("status") or "running"
+    elif agent_state in ("success", "failed"):
+        active = False
+        status = payload.get("status") or agent_state
+    else:
+        status = payload.get("status") or host.agent_update_state or "unknown"
+        active = status == "running"
     return {
         "active": active,
         "host_id": host.id,