The Threads app

Threads now has its own app, opened from the Threads icon on your home's Apps tab (or at /{you}/Chat). It works like the chat clients you know: a vertical list of your open threads on the left, newest first, with the composer beside it — start a new conversation and it opens full-screen.

Every thread row carries an ✕: clicking it closes the thread, so it leaves your list immediately. Closing never deletes anything — a closed thread stays searchable, and reopening it brings it right back.