Adds multi-gateway switching with isolated credentials, history, queues, and notification routing.

Upgrades chat with offline recovery, session search and groups, model and agent pickers, voice notes, actions, link previews, code and math rendering.

Adds workspace files, Cron details, terminal access, and Listen playback.

Improves onboarding, reconnects, keyboards, notification filtering, location, canvas safety, and voice reliability.

Thanks @IWhatsskill, @ioridev, and @narcissus0702.
