New users land on an empty search box with only a tiny fill-only "try example"
link; activation (first vin_decode_success) sits at ~32%. This adds a prominent
one-click "decode a sample vehicle" card that autoDecodes the sample VIN ->
straight to the vehicle page (the aha-moment).
Gated behind the exp-activation-guided-decode multivariate flag (control/guided),
read ONLY for unactivated users (empty history) so power-user decodes don't
dilute the metric; undefined -> control (status quo). PostHog experiment 83153
measures vin_decode_success. B2B-safe copy (sample vehicle, not "your car").
The experiment stays in draft until this ships to prod (web flags need the prod
VITE_POSTHOG_KEY), then launch.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>