MOJI6416/grubielauncher ? reverse-engineered prompt

Build me a modern desktop Minecraft launcher for Windows and Linux that feels like a real app, not a simple installer. I want it to let people sign in with Microsoft, offline, and a couple other common account types, then download Minecraft versions, the right Java, and mod loaders like Forge, Fabric, NeoForge, and Quilt.

It should keep each instance separate with mods, worlds, configs, launch settings, and let users import and export packs easily. Add a clean sidebar layout, a command palette with keyboard shortcuts, and a place to search and manage mods, resource packs, shaders, and datapacks.

I also want it to be helpful when something breaks, so it can read crash logs and explain what likely caused the problem. Bonus if it includes friends, chat, voice, world joining, backups, and an assistant that can help manage instances and settings. Keep it polished and modern, and look up current docs online if you need to.