Apply a codebase-wide comment audit against the comment conventions:
split banned semicolons and multi-sentence lines into one sentence per
line, cut cross-file and history narration, trim file-top headers to a
single purpose line, and drop verbosity that did not earn its place.
Prose docs (CLAUDE.md, install.md) get the same one-sentence-per-line
and no-semicolon treatment.
Add modules.desktop.portals, enabled by the desktop aggregator, pinning the
XDG desktop portal routing explicitly: the three interfaces the Hyprland
portal implements (screencast, screenshot, global shortcuts) go to Hyprland,
and GTK is the default for file dialogs and appearance.
The backend packages already arrive with the Hyprland compositor integration,
so this module owns only the routing, which was previously empty and rode on
the config file the Hyprland package happens to ship. Making it a first-class
module so in-app screen sharing does not depend on that incidental default.
