DL-437

Compass surfaces follow rigel.build with stronger pane edges: shell chrome (topbar, both sidebars, the Session Log) sits on --cx-bg and pane heads on --cx-bg-panel; --cx-border is night-2 for lines inside a pane, and --cx-border-strong is selection and draws every pane edge (both sidebars, the Session Log, and the topbar’s bottom edge)

Status: Active (Matt, 2026-10-08)