Added
- Firefox's Bookmarks, History and Synced Tabs panels (Cmd+B, Cmd+Shift+H, or View > Sidebar) are a second sidebar: beside the page, full height on the window's own background like the tabs, and no wider than the tab sidebar may be. Their rows are measured off your tabs (text, colours, height, gaps, padding, folder indent), with highlights shaped like the space name's and long titles fading as a tab's do. The title sits level with the space's name in its colour, with Zia's close button; Zia's solid icons replace Firefox's, and the search field gets a soft fill and a faint focus line. Its look and its place beside the page can each be switched off in settings