I asked Grok to explain mini app by flexa like I'm a 10 yr old. Imagine you're playing on your phone or tablet, and you have a big app like a game or a social network where you chat with friends. A mini app is like a tiny game or tool that lives inside that big app—it's not a whole separate thing you have to download. For example, think of it as a little toy hidden in your toy box. You open the big toy box (the main app), and inside, you find a small puzzle or sticker book (the mini app) that you can play with right there, without leaving the box. It might let you buy candy or share pictures super quick and easy, all without needing a real wallet or card. These mini apps are made to be fast and fun, especially in cool new worlds like blockchain (that's like a super-secure online playground where money and stuff can move around without bad guys stealing it). They're getting popular because they're simple—no big setups, just scan a code or tap, and boom, you're done!