Sandbox demo
Camera and Image Picker
Capture, compress, upload — without permission-prompt hell.
expo-image-picker handles the camera roll and live capture. The trap most beginners hit is uploading raw photos — modern phones produce 5MB+ files. Compress to a sensible width (e.g. 1080px) before upload using expo-image-manipulator. Bandwidth saved is bandwidth your users don't pay for.
Sandbox transcript
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The transcript is canned — no real API calls. The point is to internalize the loop: user → plan → tool → result → answer.
Check your understanding
Q1. Why compress photos before upload on mobile?
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