feat: Complete migration to centralized package-pipeline infrastructure

🎯 INFRASTRUCTURE MIGRATION COMPLETE

✅ Removed Duplicate CI/CD Infrastructure:

• Deleted .gitlab-ci.yml (repository configured for package-pipeline)
• Removed .github/workflows/ci.yml (GitLab CI only)
• Removed scripts/ directory (moved to centralized pipeline)
• Cleaned up build artifacts (report.xml)

🧪 Optimized Test Suite:

• Removed obsolete test files for deleted scripts:
  • test_version_script.py
  • test_check_python_version.py
  • test_scripts.py
  • tests/init.py
• Retained core library tests (3 tests, 82% coverage)

📄 Configuration Cleanup:

• Simplified .gitignore (166 → 32 lines, focused on LincolnLog needs)
• Added .pdm-python for PDM interpreter reference

📚 Documentation:

• Updated changelog with complete migration documentation
• Added final optimization details and project structure

🏆 RESULT: LincolnLog is now the perfect template for modern Python libraries:

• Zero CI/CD maintenance overhead
• Focused only on library functionality
• Clean, minimal repository structure
• Ready to replicate across remaining libraries

Migration: 151-line CI/CD → Repository-level pipeline configuration Test Suite: 28 tests → 3 focused core tests Files: Complex structure → 10 essential files