Mirrors the azos-core change: removes the now-relocated standalone
features from azos/features, and updates both import lists
(home-manager/home.nix, nixos/configuration.nix) to pull the nixos.desktop
and nixos.dev suite modules instead of the old per-feature ones.
Mirrors the azos-core change: station is renamed desktop (its apps are
generically useful on any machine, work included), discord moves to its
own standalone azos/features/discord (personal-only, so it lives in the
azos project rather than azos-core), and azos-emacs-station becomes
azos-emacs-desktop in lauretta's emacs config to match.
Bumps the azos-core submodule and updates docs/imports to match: AGENTS.md
now documents the suite-grouping convention (no bare top-level modules),
and claude-memory/claude-skills no longer need their own entries in
home-manager/home.nix since they're folded into the base suite.
aner