Blueturboguy07/nut-ai ? reverse-engineered prompt

Build me an open source mobile app for tracking calories from photos, where I can point my camera at a meal and get calories and macros with an uncertainty range, not a fake exact number.

It should let me scan food photos, barcodes, nutrition labels, receipts, and also enter food manually. For photo scans, use my own AI key if I provide one, but the app should still work for barcode scanning, label OCR, search, and manual logging even without a key. I want every assumption to be visible and editable, and when I correct something it should update the totals instantly on the phone.

Please make it fully local, with no account, no server, and no subscription. Store everything on device, and let me export and restore all my data as one file. It should also include a simple health score, exercise logging, and adaptive calorie targets based on my weigh in trend. If you need to look up current docs or APIs while building it, go ahead.