What you are building
A mini app opens inside Telegram and MAX — not in a browser. Almost everything else follows from that.

A mini app is a screen that opens inside the messenger, from your bot. Nobody installs it from an app store or creates a password: they tap a button in the chat with your bot and the app opens over the conversation.
You assemble it here with the mouse: screens, buttons, lists, forms. No code. When it is ready you press Publish, get an address and attach it to your bot.
That screen is yours: the Publish dialog → How the app looks outside the messenger sets the picture in the circle and your own wording instead of ours. Somebody who arrived from a poster is better served by “The listings live in Telegram — tap and they open” than by an explanation of how the product works. Left empty, ours stays.
What a visitor gets: their name and photo come from the messenger profile automatically — nothing to fill in. A phone number is shared only if they tap the button that asks for it.