Edge-swipe panes replace the bottom nav. On mobile, the bottom-tab navigation gave way to an edge-swipe pane flow. The chat sits in the center; swiping reaches the room list, the neuron brain, the Files pane, and the A/V panel. It's a more app-native gesture model that frees up the bottom of the screen for the composer and reads as one continuous surface rather than a stack of tabs.
A video window you can move. The voice-and-video experience got a draggable picture-in-picture: the live video can float over the chat, be docked into the A/V pane, or popped back out to chat as you move between contexts. The swipe gesture itself was tuned to be less twitchy so the up-swipe to A/V stops firing by accident while you're scrolling messages or using the composer.
Why it matters
Mobile is where group chat lives, and the old tab bar fought the gestures people already expect. Moving to edge-swipe navigation and giving the video call a window you can actually reposition makes GroupGPT feel like it was built for the phone, not squeezed onto it.