fixes and improvements

backend/src/media_library_viewer_api/routers/tasks.py

@@ -14,7 +14,6 @@ from media_library_viewer_api.clients.local import LocalCommandClient
 from media_library_viewer_api.clients.ssh import RemoteSSHClient
 from media_library_viewer_api.config import get_settings
 from media_library_viewer_api.dependencies import get_settings_store
-from media_library_viewer_api.services.known_hosts import ensure_known_host
 from media_library_viewer_api.services.settings_store import SettingsStore
 
 logger = logging.getLogger(__name__)
@@ -67,7 +66,6 @@ def _client_for_machine(store: SettingsStore, machine: dict[str, Any]):
         raise HTTPException(status_code=400, detail="SSH machine is missing host or username")
 
     settings = get_settings()
-    ensure_known_host(host, int(machine.get("port") or 22), settings.ssh_known_hosts_file)
 
     private_key = str(machine.get("ssh_private_key") or "")
     passphrase = str(machine.get("ssh_private_key_passphrase") or "")