fix: Exclude mcp_server directory from root project pytest discovery

- Added norecursedirs = ["mcp_server"] to pytest configuration
- Prevents pytest from recursively discovering tests in mcp_server when running from root
- mcp_server has its own dedicated test suite and GitHub Actions workflow

🤖 Generated with [Claude Code](https://claude.ai/code)

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

pyproject.toml

@@ -65,6 +65,7 @@ build-backend = "hatchling.build"
 
 [tool.pytest.ini_options]
 pythonpath = ["."]
+norecursedirs = ["mcp_server"]
 
 [tool.ruff]
 line-length = 100