maxVeremchuk/backstage_commercials ? reverse-engineered prompt

Build me a demo app called BackstageCommercials that makes shopping feel built into a video scene instead of interrupting it.

I want a small web app with a Prime Video style front end where I can upload or choose a frame from a movie scene, type what product I want to place or find, and see a product blended into the background in a believable way. If a product is already visible in the scene, the app should help me find a similar item on Amazon. If I pick something, it should show a subtle on screen product card and let me add it to my cart or wishlist with one click.

Also make the backend endpoints work so an AI agent can identify the item in the frame, search Amazon for similar products, and hand off to a browser agent for checkout actions. If you need current docs for any model or API, look them up online while building it.