fix: use type-specific endpoint for DGXCloud workload status

The status() method was calling GET /workloads/{job_id} (generic endpoint)
which returns 403 for distributed and training workloads. The correct
endpoints match the create paths: /workloads/distributed/{job_id} for
multi-node jobs and /workloads/trainings/{job_id} for single-node jobs.
This is consistent with how cancel() already uses /workloads/distributed/.

Adds test_status_distributed to verify the correct URL is used for
multi-node executors.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: ko3n1g

nemo_run/core/execution/dgxcloud.py

@@ -360,7 +360,8 @@ def nproc_per_node(self) -> int:
         return 1
 
     def status(self, job_id: str) -> Optional[DGXCloudState]:
-        url = f"{self.base_url}/workloads/{job_id}"
+        workload_type = "distributed" if self.nodes > 1 else "trainings"
+        url = f"{self.base_url}/workloads/{workload_type}/{job_id}"
         token = self.get_auth_token()
         if not token:
             logger.error("Failed to retrieve auth token for status request.")

test/core/execution/test_dgxcloud.py

@@ -895,7 +895,34 @@ def test_status(self, mock_get):
 
             assert status == DGXCloudState.RUNNING
             mock_get.assert_called_once_with(
-                "https://dgxapi.example.com/workloads/job123",
+                "https://dgxapi.example.com/workloads/trainings/job123",
+                headers=executor._default_headers(token="test_token"),
+            )
+
+    @patch("requests.get")
+    def test_status_distributed(self, mock_get):
+        mock_response = MagicMock()
+        mock_response.status_code = 200
+        mock_response.json.return_value = {"phase": "Running"}
+        mock_get.return_value = mock_response
+
+        with patch.object(DGXCloudExecutor, "get_auth_token", return_value="test_token"):
+            executor = DGXCloudExecutor(
+                base_url="https://dgxapi.example.com",
+                kube_apiserver_url="https://127.0.0.1:443",
+                app_id="test_app_id",
+                app_secret="test_app_secret",
+                project_name="test_project",
+                container_image="nvcr.io/nvidia/test:latest",
+                pvc_nemo_run_dir="/workspace/nemo_run",
+                nodes=8,
+            )
+
+            status = executor.status("job123")
+
+            assert status == DGXCloudState.RUNNING
+            mock_get.assert_called_once_with(
+                "https://dgxapi.example.com/workloads/distributed/job123",
                 headers=executor._default_headers(token="test_token"),
             )