junaidjamel/cal_scanner — reverse-engineered prompt

Build me a polished Flutter app called Cal AI for Android and iOS. I want it to help someone track meals by taking or choosing a photo of their food, sending it to Grok AI, and showing an estimate for calories, protein, carbs, and fat.

Please include a friendly onboarding flow, a clean home dashboard that shows today’s calories compared with a personal goal, macro progress, and a meal history with time, photo, food name, and nutrition details. Let users set or edit their calorie and macro goals, save everything locally so it stays after closing the app, and show simple AI nutrition tips based on what they’ve logged.

Use a modern Material style that feels lightweight and fast. Keep the code organized into screens, widgets, models, services, and helpers. Put the Grok API key in a root .env file. If you need current Flutter or Grok docs, look them up online.