Add a clipboard module to the desktop group, enabled through the
aggregator. Home-manager's services.cliphist runs the text and image
watchers as systemd user services bound to the graphical-session
target, and a rofi-dmenu picker recalls history on Super+Shift+V.
Add the hyprland-desktop spec, ADR 0003 recording the compositor choice
over Sway/KDE/niri, and the task breakdown (0021-0030) that decomposes
the desktop into granular grouped modules. Record the corrected host GPU
facts (zeus is AMD, raichu the sole Nvidia machine) in CLAUDE.md.
