- Added `lib/utils.sh` and `lib/logging.sh` for reusable utility and logging functions.
- Updated `run.sh` and `scripts/generate-changelog.sh` to use the new utility and logging functions (`validate_arg`, `log_info`, `log_error`).
- Add `config.env` for better clarity and updated all references in the project.
- Enhanced documentation in `README.md` to reflect the new configuration file and usage instructions.
- Improved error handling and logging consistency across scripts.
