- Introduced `fmt_bytes` function for human-readable byte size formatting.
- Added `DownloadProgress` class to track and display download progress with speed and completion percentage.
- Updated `download` functions in `civitai_fetch.py` and `llamacpp_fetch.py` to utilize progress tracking.
- Enhanced `ollama_pull.py` to support streaming progress updates during model pulls.
- Updated tests to validate new formatting and progress tracking functionalities, ensuring accurate output and user feedback.