Build a React PWA called 'Park Pin' using WebInfer with vision, Geolocation API, and MediaDevices. UI: big 'I Parked Here' button, saved spot view with photo and directions, parking history. Save spot flow: one tap opens camera, capture photo of surroundings (show car, section signs if possible). Simultaneously capture geolocation. Vision model analyzes photo with generateObject to return { sectionMarkers: string[], floorIndicators: string[], nearbyLandmarks: string[], carVisible: boolean, vehicleDescription?: string }. Save to IndexedDB: { photo, gps: {lat, lng, accuracy}, timestamp, parsedSection, duration?, notes }. Optional: set parking duration for meter (e.g., '2 hours'), schedule notification at 15min and 5min before expiration. Find car view: show saved photo prominently, parsed section info, 'Navigate' button opens maps with saved coordinates (or shows compass direction + distance if offline). Parking timer: shows elapsed time, useful for hourly garages. History: past parking spots with photos (helpful for 'where did I park last time at this mall?'). Share: send parking location to passenger who's meeting you. Widget/shortcut: quick access to 'I Parked Here' from home screen. Battery-conscious: no background tracking, only captures on explicit action.