Quick-reference card for caveman modes, skills, and commands with one-shot display.

• Six modes available: Lite, Full (default), Ultra, Wenyan-Lite, Wenyan-Full, and Wenyan-Ultra, each progressively compressing output from light article-dropping to extreme classical Chinese terseness
• Four skills included: caveman-commit for terse conventional commits, caveman-review for one-line PR feedback, caveman-compress for markdown token reduction, and caveman-help for this reference
• Modes persist until changed or session end; deactivate with "stop caveman" or "normal mode"
• Default mode configurable via environment variable or config file at ~/.config/caveman/config.json