Generate an 8-10 second video prompt centered on an app onboarding motion storyboard. Build it as a reusable video brief with three concrete beats: open on a clean welcome screen that frames the user's goal and the app's first promise; move through two or three editable UI panels where sign-up, setup, and first action connect through animated cards, arrows, tap cues, or cursor highlights; end on a stable success screen or dashboard hero frame that can work for a landing page preview, product showcase, or social cutdown. Shape the clip like a product explainer: keep interface text generic and editable, make screen transitions readable, preserve spatial continuity between panels, and show one satisfying motion beat that explains the workflow without exposing real customer data. Specify pacing, lens feel, camera distance, lighting, motion blur, and continuity rules so the output stays readable. Keep all app screens, interface text, user details, icons, colors, and logos editable. Avoid real brand names, celebrity references, fixed IP, unreadable microcopy, customer data, unsafe claims, sudden teleport cuts, inconsistent UI scale, warped hands, and unrelated extra scenes.