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/options.nix

@@ -23,6 +23,25 @@
       description = "Terminal emulator command, used by keybinds and $TERMINAL.";
     };
 
+    keyboard.layout = lib.mkOption {
+      type = lib.types.str;
+      default = "us";
+      example = "de";
+      description = ''
+        XKB layout for the Hyprland session. The console (and the LUKS
+        passphrase prompt) take theirs from the system side — the
+        installer writes services.xserver.xkb + console.useXkbConfig
+        into system.nix with the same value.
+      '';
+    };
+
+    keyboard.variant = lib.mkOption {
+      type = lib.types.str;
+      default = "";
+      example = "nodeadkeys";
+      description = "XKB variant for the Hyprland session.";
+    };
+
     package = lib.mkOption {
       type = lib.types.package;
       default = pkgs.nomarchy-theme-sync;
@@ -44,6 +63,9 @@
     # ── Component toggles ──────────────────────────────────────────
     hyprland.enable = lib.mkEnableOption "Nomarchy's Hyprland configuration" // { default = true; };
     waybar.enable = lib.mkEnableOption "Nomarchy's Waybar configuration" // { default = true; };
+    fuzzel.enable = lib.mkEnableOption "Nomarchy's themed fuzzel + the nomarchy-menu dispatcher (power menu)" // { default = true; };
+    swaync.enable = lib.mkEnableOption "swaync notifications, themed from the state file" // { default = true; };
+    idle.enable = lib.mkEnableOption "hyprlock + hypridle (idle lock, display off, suspend)" // { default = true; };
     ghostty.enable = lib.mkEnableOption "Nomarchy's Ghostty configuration" // { default = true; };
     btop.enable = lib.mkEnableOption "btop with the per-theme nomarchy theme" // { default = true; };
     stylix.enable = lib.mkEnableOption "Stylix theming for the long tail of apps (GTK, Qt, cursors)" // { default = true; };