Zen adds Mozilla account sync for Spaces across devices

Zen now lets users sync Spaces, folders, tabs, and more across devices using a Mozilla account. When the feature is enabled for the first time, Zen merges local and cloud Spaces.

Zen newest release also adds interface and onboarding changes, updates to Firefox 155.0 and 155.0.1, and fixes issues with GitHub live folders, Linux sleep, scrolling, and background audio.