mrowlinson/better-teams ? reverse-engineered prompt

Build me a native macOS Microsoft Teams client that feels fast and polished, not like a web wrapper.

I want chats, channels, activity, calendar, files, and meetings all in one app, with a clean SwiftUI interface and a Rust core if that helps keep it responsive. Chats should open instantly, keep recent messages local so they appear right away, support replies, reactions, editing, deleting, forwarding, pinning, sending files, and scheduled messages. Activity should show mentions, replies, reactions, and missed calls, and jump straight to the right message.

Meetings should open in their own window, with pre join controls for camera and mic. Files should feel like a Finder style table with preview and drag and drop. Also include a Catch Up summary view that can summarize a thread locally on the Mac, plus a simple app area for Teams apps and a keyboard first experience with quick switching and global shortcuts.

If you need current API or platform details, look up the latest docs online.