style: fix pre-commit issues

- Fix trailing whitespace
- Fix import ordering with isort
- Apply autopep8 formatting

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

test_agentcore_icons.py

@@ -9,17 +9,18 @@ from diagrams import Diagram
 from diagrams.aws.ml import (
     Agentcore,
     AiAgent,
-    Runtime,
+    BrowserTool,
+    CodeInterpreter,
+    Evaluations,
     Gateway,
     Identity,
-    CodeInterpreter,
-    Observability,
-    BrowserTool,
     Memory,
-    Evaluations,
+    Observability,
-    PolicyEngineAgenticGuardrails
+    PolicyEngineAgenticGuardrails,
+    Runtime,
 )
 
+
 def test_agentcore_icons():
     """Test all Agentcore icons in a sample diagram"""
 
@@ -54,5 +55,6 @@ def test_agentcore_icons():
     print("📁 Generated file: agentcore_test.png")
     print("🔍 Please verify the icons render correctly in the diagram")
 
+
 if __name__ == "__main__":
     test_agentcore_icons()

test_nova_icons.py

@@ -8,6 +8,7 @@ Tests Amazon Nova, AWS App Studio, Amazon CodeWhisperer, and AWS Neuron
 from diagrams import Diagram
 from diagrams.aws.ml import AmazonNova, AWSAppStudio, AWSNeuron
 
+
 def test_nova_icons():
     """Test the new Nova and AI service icons"""
 
@@ -24,5 +25,6 @@ def test_nova_icons():
     print("📁 Generated file: nova_test.png")
     print("🔍 Please verify the icons render correctly in the diagram")
 
+
 if __name__ == "__main__":
     test_nova_icons()