Fix package structure for v4.0.1 - Critical import fix

[JoshuaWink]

🐛 Critical Fix: Package Structure Import Issue

Problem

• v3.0.0 published with incomplete package structure
• when importing modulink
• Users unable to import the package after installation

Solution

• Fixed setuptools configuration to properly include package
• Updated to use for automatic package discovery
• Excluded test files from distribution package
• Verified wheel build includes all necessary modules

Changes

• ✅ Fixed package structure configuration in
• ✅ Updated version to 4.0.1 (patch release for critical fix)
• ✅ Updated CHANGELOG.md with detailed release notes
• ✅ Tested wheel build and import functionality
• ✅ Excluded test files from distribution

Testing

• Creating isolated environment: venv+pip...
• Installing packages in isolated environment:
  • setuptools>=61.0
  • wheel
• Getting build dependencies for wheel...
  running egg_info
  writing modulink_py.egg-info/PKG-INFO
  writing dependency_links to modulink_py.egg-info/dependency_links.txt
  writing requirements to modulink_py.egg-info/requires.txt
  writing top-level names to modulink_py.egg-info/top_level.txt
  reading manifest file 'modulink_py.egg-info/SOURCES.txt'
  adding license file 'LICENSE'
  writing manifest file 'modulink_py.egg-info/SOURCES.txt'
• Building wheel...
  running bdist_wheel
  running build
  running build_py
  copying modulink/init.py -> build/lib/modulink
  copying modulink/cli_visualize.py -> build/lib/modulink
  copying modulink/main.py -> build/lib/modulink
  running egg_info
  writing modulink_py.egg-info/PKG-INFO
  writing dependency_links to modulink_py.egg-info/dependency_links.txt
  writing requirements to modulink_py.egg-info/requires.txt
  writing top-level names to modulink_py.egg-info/top_level.txt
  reading manifest file 'modulink_py.egg-info/SOURCES.txt'
  adding license file 'LICENSE'
  writing manifest file 'modulink_py.egg-info/SOURCES.txt'
  copying modulink/src/init.py -> build/lib/modulink/src
  copying modulink/src/_fuzzy_imports.py -> build/lib/modulink/src
  copying modulink/src/chain.py -> build/lib/modulink/src
  copying modulink/src/context.py -> build/lib/modulink/src
  copying modulink/src/docs.py -> build/lib/modulink/src
  copying modulink/src/graphviz_utils.py -> build/lib/modulink/src
  copying modulink/src/link.py -> build/lib/modulink/src
  copying modulink/src/listeners.py -> build/lib/modulink/src
  copying modulink/src/middleware.py -> build/lib/modulink/src
  copying modulink/src/modulink_doc.py -> build/lib/modulink/src
  installing to build/bdist.macosx-15.0-arm64/wheel
  running install
  running install_lib
  creating build/bdist.macosx-15.0-arm64/wheel
  creating build/bdist.macosx-15.0-arm64/wheel/modulink
  copying build/lib/modulink/init.py -> build/bdist.macosx-15.0-arm64/wheel/./modulink
  copying build/lib/modulink/cli_visualize.py -> build/bdist.macosx-15.0-arm64/wheel/./modulink
  copying build/lib/modulink/main.py -> build/bdist.macosx-15.0-arm64/wheel/./modulink
  creating build/bdist.macosx-15.0-arm64/wheel/modulink/src
  copying build/lib/modulink/src/link.py -> build/bdist.macosx-15.0-arm64/wheel/./modulink/src
  copying build/lib/modulink/src/_fuzzy_imports.py -> build/bdist.macosx-15.0-arm64/wheel/./modulink/src
  copying build/lib/modulink/src/listeners.py -> build/bdist.macosx-15.0-arm64/wheel/./modulink/src
  copying build/lib/modulink/src/chain.py -> build/bdist.macosx-15.0-arm64/wheel/./modulink/src
  copying build/lib/modulink/src/init.py -> build/bdist.macosx-15.0-arm64/wheel/./modulink/src
  copying build/lib/modulink/src/docs.py -> build/bdist.macosx-15.0-arm64/wheel/./modulink/src
  copying build/lib/modulink/src/context.py -> build/bdist.macosx-15.0-arm64/wheel/./modulink/src
  copying build/lib/modulink/src/modulink_doc.py -> build/bdist.macosx-15.0-arm64/wheel/./modulink/src
  copying build/lib/modulink/src/graphviz_utils.py -> build/bdist.macosx-15.0-arm64/wheel/./modulink/src
  copying build/lib/modulink/src/middleware.py -> build/bdist.macosx-15.0-arm64/wheel/./modulink/src
  running install_egg_info
  Copying modulink_py.egg-info to build/bdist.macosx-15.0-arm64/wheel/./modulink_py-4.0.1-py3.13.egg-info
  running install_scripts
  creating build/bdist.macosx-15.0-arm64/wheel/modulink_py-4.0.1.dist-info/WHEEL
  creating '/Users/joshuawink/Documents/github/modulink/modulink-py/dist/.tmp-f36m7rmz/modulink_py-4.0.1-py3-none-any.whl' and adding 'build/bdist.macosx-15.0-arm64/wheel' to it
  adding 'modulink/init.py'
  adding 'modulink/main.py'
  adding 'modulink/cli_visualize.py'
  adding 'modulink/src/init.py'
  adding 'modulink/src/_fuzzy_imports.py'
  adding 'modulink/src/chain.py'
  adding 'modulink/src/context.py'
  adding 'modulink/src/docs.py'
  adding 'modulink/src/graphviz_utils.py'
  adding 'modulink/src/link.py'
  adding 'modulink/src/listeners.py'
  adding 'modulink/src/middleware.py'
  adding 'modulink/src/modulink_doc.py'
  adding 'modulink_py-4.0.1.dist-info/licenses/LICENSE'
  adding 'modulink_py-4.0.1.dist-info/METADATA'
  adding 'modulink_py-4.0.1.dist-info/WHEEL'
  adding 'modulink_py-4.0.1.dist-info/top_level.txt'
  adding 'modulink_py-4.0.1.dist-info/RECORD'
  removing build/bdist.macosx-15.0-arm64/wheel
  Successfully built modulink_py-4.0.1-py3-none-any.whl
  Success
  ['BaseListener', 'Chain', 'Context', 'Link', 'Middleware', 'all', 'builtins', 'cached', 'doc', 'file', 'loader', 'name', 'package', 'path', 'spec', 'get_doc', 'is_link', 'main', 'src']

Release Process

This PR should be:

1. Reviewed and merged to main
2. Tagged as v4.0.1
3. Released to PyPI via GitHub Actions

Priority: HIGH - This fixes a critical import issue affecting all users of v3.0.0