dot matrix display easter egg
- game ui revealed after 25% completion. helps prevents distraction by requiring user to be intentional
- each level gets harder, brush size decreases
nudge towards doing an action
- disclaimer to convey best practice
- disclaimer emphasized when user tries to go against recommendation
- button label clear the consequence
we saw ~22% save rate after shipping
typing transition
- edits the minimal diff
- jitter between keystrokes so it feels human, not robotic
- harder-to-reach chars like /{}- have larger jitter
- interruptible, so rapid model changes never queue stale animations
- reduced motion variant
- stable syntax highlighting