msveshnikov/allchat ? reverse-engineered prompt

Build me an AI chat app like AllChat where I can talk to different models in one place, save chat history, and switch between them easily.

I want a clean chat interface with Markdown support, message editing, and the ability to regenerate replies. It should let me upload files like PDFs, Word docs, and Excel sheets, and also handle image input, with image generation too. Please include features for custom assistants, shared chats, and some kind of memory so the app can remember useful things I tell it.

It should also be able to do practical tasks like run code, summarize YouTube videos, send email, and use web tools for things like weather, stocks, search, and Telegram. Make it mobile friendly and work well as a PWA. If you need to check current docs or APIs while building it, go ahead and look them up online.