fix: apply isort formatting to fix CI linting

Applied isort to properly sort all imports according to PEP8:
- Standard library imports first
- Third-party imports second
- Local imports last
- Alphabetical ordering within each group

All tests still passing after import reordering.

setup.py

@@ -2,9 +2,10 @@
 Setup configuration for Gemini MCP Server
 """
 
-from setuptools import setup
 from pathlib import Path
 
+from setuptools import setup
+
 # Read README for long description
 readme_path = Path(__file__).parent / "README.md"
 long_description = ""