v0.12.0

• On an Omarchy desktop, an omarchy theme paints the panel from the desktop's own colour scheme; it is built from the live palette rather than fetched from the repository, and appears in the Alt+T picker only where Omarchy is installed.
• The omarchy theme follows the desktop: changing the desktop theme recolours a running session in place, through a small theme-set hook hcmd installs itself and a SIGUSR1 reload.