ZarScape/discord.js-v2-components ? reverse-engineered prompt

Build me a Discord bot example that shows off Discord Components V2 in a simple, easy to copy way.

I want one slash command that sends a rich interactive message without using embeds, so I can see how the new component based layout works in practice. Please include examples of formatted text, sections with thumbnails or buttons, separators, a channel picker, image gallery style media, and a file attachment shown inside the message. Make it feel like a polished reference bot, not just a plain demo, and keep the code organized so I can reuse the pieces in my own bot later.

If you need to check the current Discord.js docs or component names, feel free to look them up online. I also want it to be clear how the command is registered and how the reply is sent with the right flags for Components V2.