fix: resolve CI/CD package filtering issues

- Fix pyproject.toml package include/exclude to only include config_auditor package
- Add MANIFEST.in to exclude unrelated directories from sdist distribution

app/pyproject.toml

@@ -49,8 +49,8 @@ dev = [
 
 [tool.setuptools.packages.find]
 where = ["."]
-include = ["config_auditor*"]
-exclude = ["tests*", "fixtures*"]
+include = ["config_auditor"]
+exclude = ["tests", "fixtures"]
 
 [tool.pytest.ini_options]
 testpaths = ["tests"]