diff --git a/libs/cli/langgraph_cli/config.py b/libs/cli/langgraph_cli/config.py
index 4785812fc..d6653c923 100644
--- a/libs/cli/langgraph_cli/config.py
+++ b/libs/cli/langgraph_cli/config.py
@@ -373,7 +373,6 @@ class HttpConfig(TypedDict, total=False):
     """
 
 
-
 class Config(TypedDict, total=False):
     """Top-level config for langgraph-cli or similar deployment tooling."""
 
diff --git a/libs/cli/tests/unit_tests/test_util.py b/libs/cli/tests/unit_tests/test_util.py
index c26e776e9..f4b439959 100644
--- a/libs/cli/tests/unit_tests/test_util.py
+++ b/libs/cli/tests/unit_tests/test_util.py
@@ -9,17 +9,17 @@ def test_clean_empty_lines():
     input_str = "line1\n\nline2\n\nline3"
     result = clean_empty_lines(input_str)
     assert result == "line1\nline2\nline3"
-    
+
     # Test with no empty lines
     input_str = "line1\nline2\nline3"
     result = clean_empty_lines(input_str)
     assert result == "line1\nline2\nline3"
-    
+
     # Test with only empty lines
     input_str = "\n\n\n"
     result = clean_empty_lines(input_str)
     assert result == ""
-    
+
     # Test empty string
     input_str = ""
     result = clean_empty_lines(input_str)
@@ -29,33 +29,51 @@ def test_clean_empty_lines():
 def test_warn_non_wolfi_distro_with_debian(capsys):
     """Test that warning is shown when image_distro is 'debian'."""
     config = {"image_distro": "debian"}
-    
+
     warn_non_wolfi_distro(config)
-    
+
     captured = capsys.readouterr()
-    assert "⚠️  Security Recommendation: Consider switching to Wolfi Linux for enhanced security." in captured.out
-    assert "Wolfi is a security-oriented, minimal Linux distribution designed for containers." in captured.out
-    assert 'To switch, add \'"image_distro": "wolfi"\' to your langgraph.json config file.' in captured.out
+    assert (
+        "⚠️  Security Recommendation: Consider switching to Wolfi Linux for enhanced security."
+        in captured.out
+    )
+    assert (
+        "Wolfi is a security-oriented, minimal Linux distribution designed for containers."
+        in captured.out
+    )
+    assert (
+        'To switch, add \'"image_distro": "wolfi"\' to your langgraph.json config file.'
+        in captured.out
+    )
 
 
 def test_warn_non_wolfi_distro_with_default_debian(capsys):
     """Test that warning is shown when image_distro is missing (defaults to debian)."""
     config = {}  # No image_distro key, should default to debian
-    
+
     warn_non_wolfi_distro(config)
-    
+
     captured = capsys.readouterr()
-    assert "⚠️  Security Recommendation: Consider switching to Wolfi Linux for enhanced security." in captured.out
-    assert "Wolfi is a security-oriented, minimal Linux distribution designed for containers." in captured.out
-    assert 'To switch, add \'"image_distro": "wolfi"\' to your langgraph.json config file.' in captured.out
+    assert (
+        "⚠️  Security Recommendation: Consider switching to Wolfi Linux for enhanced security."
+        in captured.out
+    )
+    assert (
+        "Wolfi is a security-oriented, minimal Linux distribution designed for containers."
+        in captured.out
+    )
+    assert (
+        'To switch, add \'"image_distro": "wolfi"\' to your langgraph.json config file.'
+        in captured.out
+    )
 
 
 def test_warn_non_wolfi_distro_with_wolfi(capsys):
     """Test that no warning is shown when image_distro is 'wolfi'."""
     config = {"image_distro": "wolfi"}
-    
+
     warn_non_wolfi_distro(config)
-    
+
     captured = capsys.readouterr()
     assert captured.out == ""  # No output should be generated
 
@@ -63,42 +81,57 @@ def test_warn_non_wolfi_distro_with_wolfi(capsys):
 def test_warn_non_wolfi_distro_with_other_distro(capsys):
     """Test that warning is shown when image_distro is something other than 'wolfi'."""
     config = {"image_distro": "ubuntu"}
-    
+
     warn_non_wolfi_distro(config)
-    
+
     captured = capsys.readouterr()
-    assert "⚠️  Security Recommendation: Consider switching to Wolfi Linux for enhanced security." in captured.out
-    assert "Wolfi is a security-oriented, minimal Linux distribution designed for containers." in captured.out
-    assert 'To switch, add \'"image_distro": "wolfi"\' to your langgraph.json config file.' in captured.out
+    assert (
+        "⚠️  Security Recommendation: Consider switching to Wolfi Linux for enhanced security."
+        in captured.out
+    )
+    assert (
+        "Wolfi is a security-oriented, minimal Linux distribution designed for containers."
+        in captured.out
+    )
+    assert (
+        'To switch, add \'"image_distro": "wolfi"\' to your langgraph.json config file.'
+        in captured.out
+    )
 
 
 def test_warn_non_wolfi_distro_output_formatting():
     """Test that the warning output is properly formatted with colors and empty line."""
     config = {"image_distro": "debian"}
-    
-    with patch('click.secho') as mock_secho:
+
+    with patch("click.secho") as mock_secho:
         warn_non_wolfi_distro(config)
-    
+
     # Verify click.secho was called with the correct parameters
     expected_calls = [
         (
-            ("⚠️  Security Recommendation: Consider switching to Wolfi Linux for enhanced security.",),
-            {"fg": "yellow", "bold": True}
+            (
+                "⚠️  Security Recommendation: Consider switching to Wolfi Linux for enhanced security.",
+            ),
+            {"fg": "yellow", "bold": True},
         ),
         (
-            ("   Wolfi is a security-oriented, minimal Linux distribution designed for containers.",),
-            {"fg": "yellow"}
+            (
+                "   Wolfi is a security-oriented, minimal Linux distribution designed for containers.",
+            ),
+            {"fg": "yellow"},
         ),
         (
-            ('   To switch, add \'"image_distro": "wolfi"\' to your langgraph.json config file.',),
-            {"fg": "yellow"}
+            (
+                '   To switch, add \'"image_distro": "wolfi"\' to your langgraph.json config file.',
+            ),
+            {"fg": "yellow"},
         ),
         (
             ("",),  # Empty line
-            {}
-        )
+            {},
+        ),
     ]
-    
+
     assert mock_secho.call_count == 4
     for i, (expected_args, expected_kwargs) in enumerate(expected_calls):
         actual_call = mock_secho.call_args_list[i]
@@ -117,16 +150,18 @@ def test_warn_non_wolfi_distro_various_configs(capsys):
         ({"image_distro": "ubuntu"}, True, "ubuntu distro"),
         ({"other_config": "value"}, True, "unrelated config keys"),
     ]
-    
+
     for config, should_warn, description in test_cases:
         # Clear any previous output
         capsys.readouterr()
-        
+
         warn_non_wolfi_distro(config)
-        
+
         captured = capsys.readouterr()
         if should_warn:
-            assert "⚠️  Security Recommendation" in captured.out, f"Should warn for {description}"
+            assert "⚠️  Security Recommendation" in captured.out, (
+                f"Should warn for {description}"
+            )
             assert "Wolfi" in captured.out, f"Should mention Wolfi for {description}"
         else:
             assert captured.out == "", f"Should not warn for {description}"
@@ -137,7 +172,7 @@ def test_warn_non_wolfi_distro_return_value():
     config = {"image_distro": "debian"}
     result = warn_non_wolfi_distro(config)
     assert result is None
-    
+
     config = {"image_distro": "wolfi"}
     result = warn_non_wolfi_distro(config)
     assert result is None
@@ -147,7 +182,7 @@ def test_warn_non_wolfi_distro_does_not_modify_config():
     """Test that warn_non_wolfi_distro does not modify the input config."""
     original_config = {"image_distro": "debian", "other_key": "value"}
     config_copy = original_config.copy()
-    
+
     warn_non_wolfi_distro(config_copy)
-    
-    assert config_copy == original_config  # Config should remain unchanged
\ No newline at end of file
+
+    assert config_copy == original_config  # Config should remain unchanged