MCP: Switch build from setuptools to hatch (#130)

Author: MonkeyCanCode

mcp-server/pyproject.toml

@@ -51,12 +51,14 @@ homepage = "https://polaris.apache.org/"
 repository = "https://github.com/apache/polaris-tools/"
 
 [build-system]
-requires = ["setuptools>=68.0"]
-build-backend = "setuptools.build_meta"
+requires = ["hatchling"]
+build-backend = "hatchling.build"
 
-[tool.setuptools.packages.find]
-where = ["."]
-include = ["polaris_mcp*"]
+[tool.hatch.build.targets.sdist]
+include = ["polaris_mcp"]
+
+[tool.hatch.build.targets.wheel]
+include = ["polaris_mcp"]
 
 [[tool.uv.index]]
 name = "pypi"