Fix lint: add license header, remove unused import, fix formatting

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

Author: ckhordiasma

.tekton/odh-trustyai-nemo-guardrails-server-pull-request.yaml

@@ -81,4 +81,4 @@ spec:
   - name: git-auth
     secret:
       secretName: '{{ git_auth_secret }}'
-status: {}
+status: {}

scripts/generate_model_lockfile.py

@@ -1,4 +1,19 @@
 #!/usr/bin/env python3
+# SPDX-FileCopyrightText: Copyright (c) 2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 """
 Generate artifacts.lock.yaml for hermetic model prefetching.
 
@@ -14,7 +29,6 @@
 import logging
 import os
 import sys
-import tempfile
 import urllib.request
 from pathlib import Path
 from typing import Any
@@ -136,9 +150,7 @@ def build_hf_artifacts(
 ) -> tuple[str, list[dict]]:
     org, repo = model_id.split("/", 1)
     commit = get_hf_model_commit(model_id)
-    files = collect_hf_files(
-        model_id, skip_files, skip_extensions, skip_prefixes
-    )
+    files = collect_hf_files(model_id, skip_files, skip_extensions, skip_prefixes)
 
     artifacts = []
     for f in files:
@@ -155,11 +167,13 @@ def build_hf_artifacts(
             sha = download_and_hash(download_url)
             checksum = f"sha256:{sha}"
 
-        artifacts.append({
-            "download_url": download_url,
-            "filename": filename,
-            "checksum": checksum,
-        })
+        artifacts.append(
+            {
+                "download_url": download_url,
+                "filename": filename,
+                "checksum": checksum,
+            }
+        )
 
     return commit, artifacts
 
@@ -170,11 +184,13 @@ def build_nltk_artifacts(resources: set[str]) -> list[dict]:
         url = f"{NLTK_DATA_BASE}/packages/tokenizers/{resource}.zip"
         logging.info(f"  {resource} (downloading to compute checksum...)")
         sha = download_and_hash(url)
-        artifacts.append({
-            "download_url": url,
-            "filename": f"nltk--{resource}.zip",
-            "checksum": f"sha256:{sha}",
-        })
+        artifacts.append(
+            {
+                "download_url": url,
+                "filename": f"nltk--{resource}.zip",
+                "checksum": f"sha256:{sha}",
+            }
+        )
     return artifacts