- Update all command module docstrings to consistent format ending with "for AITBC CLI"
- Remove unused imports (json, httpx, pydantic) from multiple command modules
- Reorder imports to group utils imports together
- Change sys.path in click_cli.py from /opt/aitbc to /opt/aitbc/cli
- Fix relative imports in cross_chain.py and ipfs.py to use .config