The design's sidebar opens with an ELY title row plus a three-part
workspace picker: a layout-grid tile (opens spaces settings), a glass
pill showing the active space's emoji + name (cycles to next space on
click), and a plus button (opens spaces settings). The previous header
was a static title + space-name label that did not match the design.
Cycle behaviour reuses the existing select_next_space core API to avoid
introducing a new state flow; the existing SelectNextSpace shortcut
delegates through the same helper.
