Emil Kowalski's /break-ui Skill Stress-Tests UIs With Realistic Worst-Case Data
AIThe /break-ui Skill, added to the Skills For Designers and Engineers repo with 43K stars and 1.9M installs, plays the most annoying real user to stress UI components with worst-case but realistic data. It targets bugs manual testing misses, such as "1 members" pluralization errors, zero-value "0 seconds ago" rendering, cross-timezone date shifts, and emoji or CJK names breaking initials logic. The skill reports issues before fixing them, and only changes the data, never the component.








