🔧 fix: configure modern Python packaging with hatchling

- Add proper build-system configuration with hatchling backend
- Configure explicit file selection for wheel packaging
- Remove deprecated setuptools configuration
- Ensures proper package building in CI environment

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

Co-Authored-By: Claude <[email protected]>

Author: kenibrewer

.github/workflows/lib/pyproject.toml

@@ -1,3 +1,7 @@
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
 [project]
 name = "github-approval-automation"
 version = "1.0.0"
@@ -8,17 +12,17 @@ dependencies = [
     "click>=8.0.0",
 ]
 
-[tool.setuptools]
-py-modules = ["approval"]
-packages = ["scripts"]
-
 [project.optional-dependencies]
 test = [
     "pytest>=7.4.4",
     "pytest-cov>=4.1.0",
     "pytest-asyncio>=0.21.1",
 ]
 
+[tool.hatch.build.targets.wheel]
+packages = ["scripts"]
+py-modules = ["approval"]
+
 [project.scripts]
 sig-approval = "scripts.sig_approval:main"
 rfc-approval = "scripts.rfc_approval:main"