Apply when facing a novel UI interaction or architectural decision with no precedent in the codebase. Build 2-3 competing prototypes and compare side by side before committing.
npx skills add https://github.com/backnotprop/pstack --skill principle-exhaust-the-design-space
It also applies to product design decisions where user experience depends on feel, not logic.
Take backnotprop/principle-exhaust-the-design-space from the repository into ~/.claude/skills for personal
use, or into .claude/skills inside a project.
The agent identifies a skill by the name field in its header. Two skills with the
same name cannot sit side by side — one of them will be ignored.