Fix py_docx import error: use setuptools + PYTHONPATH

pyproject.toml

@@ -1,6 +1,6 @@
 [build-system]
-requires = ["hatchling"]
-build-backend = "hatchling.build"
+requires = ["setuptools>=61.0"]
+build-backend = "setuptools.build_meta"
 
 [project]
 name = "py-docx-mcp"
@@ -15,10 +15,12 @@ dependencies = [
     "html5lib>=1.1",
     "regex>=2024.0.0",
     "aiofiles>=24.0.0",
+    "uvicorn>=0.24.0",
 ]
 
 [project.scripts]
 py-docx-mcp = "py_docx.server:main"
 
-[tool.hatch.build.targets.wheel]
-packages = ["src/py_docx"]
+[tool.setuptools.packages.find]
+where = ["src"]
+include = ["py_docx*"]