feedback patterns Shipped
What this lens looks for
Implement toast/snackbar (auto-dismiss 3-5s), inline alerts/banners, and modal dialogs; connect feedback weight to action weight; no alert() or dialogs for success; default focus on Cancel in destructive dialogs
What its verifier checks
Toast auto-dismisses after 3-5s; success never triggers window.alert() or <dialog>; destructive dialogs use explicit labels (not "OK"); focus set to Cancel/safe button on dialog open