Function default

First-run vehicle setup page — matches handoff-2's FirstRunNoVehicle (screens-onboarding.jsx). Trimmed-down variant of the design's NoVehicleScreen: manual entry form (Year / Make / Model / optional VIN), dashed-border explainer cards ("No saved vehicles yet" + "No Bluetooth adapter detected"), and a sidebar with "Why we need a vehicle" bullets + "What happens next" steps.

Submitting "Add vehicle" dispatches setVehicleDefaults and routes to /import so the user can drop their first CSV. The OBD-adapter

• saved-vehicle import paths are scaffolded with disabled controls — wired once the Bluetooth + vprofile features land.