Adding a real database

The jump from prototype to product is persistence: your app has to remember things after the tab closes. Every serious AI coding stack can wire up a hosted database — you just have to ask for it explicitly. Prompt for the shape of the data, not the technology: "store bookings with a service, a stylist, a start time and a customer email" lets the agent pick sensible columns and types. Mention the database product only if you already know your stack. After the agent sets it up, verify like a skeptic: create a record, refresh the page, restart the app. If the data survives all three, you have a real database.