feat(home): menu system, swaync, idle/lock, nm-applet, theme parity

- Themed fuzzel (modules/home/fuzzel.nix): palette/fonts/border from the
  JSON, themes/<slug>/fuzzel.ini whole-swap mechanism. Plus the
  nomarchy-menu dispatcher: root picker · power (SUPER+Escape) · theme
  (SUPER+T) · clipboard (SUPER+CTRL+V, cliphist) · calc (qalc) · files
  (fd→xdg-open) · web (DuckDuckGo).
- swaync notifications themed from the JSON (SUPER+N) — until now nothing
  rendered notify-send (theme toasts, font warnings, welcome msg).
- hyprlock + hypridle (modules/home/idle.nix): lock 5min, dpms off 10,
  suspend 30; enables the power menu's Lock entry. cliphist daemon on.
- NetworkManager applet in waybar's tray (preferStatusNotifierItems);
  network module on-click → $TERMINAL -e nmtui.
- nomarchy.keyboard.layout/.variant option → Hyprland kb_layout/kb_variant
  (the installer writes it; pairs with system-side xkb for tty/LUKS).
- Media-key/audio on-click moved to wpctl (pamixer was inconsistent).
- Theme parity: summer-day/night carry their legacy bar LAYOUTS as
  waybar.jsonc whole-swaps (the original import took waybar.css but not
  config.jsonc, so identity themes styled nonexistent modules). Dead
  legacy script-modules dropped, Nerd-Fonts-v2 codepoints → FontAwesome/v3
  (font-awesome now shipped), logo buttons open nomarchy-menu.

New toggles: nomarchy.{fuzzel,swaync,idle}.enable (all default true).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

modules/home/default.nix

@@ -12,8 +12,20 @@
     ./waybar.nix
     ./ghostty.nix
     ./btop.nix
+    ./fuzzel.nix    # launcher theming + the nomarchy-menu dispatcher
+    ./swaync.nix    # notification daemon, themed from the same JSON
+    ./idle.nix      # hyprlock + hypridle, themed from the same JSON
   ];
 
+  # Clipboard history (wl-paste watcher); browsed via the SUPER+CTRL+V
+  # menu module.
+  services.cliphist.enable = true;
+
+  # Wifi from the bar: nm-applet lives in waybar's tray (SNI flag via
+  # preferStatusNotifierItems — without it there is no tray icon).
+  services.network-manager-applet.enable = true;
+  xsession.preferStatusNotifierItems = true;
+
   home.stateVersion = "26.05";
 
   home.packages = with pkgs; [