Install Donkeycar on Mac

Create a persistent named venv
uv venv ~/.venvs/donkeycar --python 3.12
Activate on login
echo 'source ~/.venvs/donkeycar/bin/activate' >> ~/.zshrc
source ~/.venvs/donkeycar/bin/activate
User install (PyPI release):
uv pip install donkeycar[macos]
Developer install (git clone):
uv pip install -e ".[macos,dev]"