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/hyprland.nix

@@ -90,7 +90,8 @@ in
 
       # ── Behaviour ──────────────────────────────────────────────────
       input = {
-        kb_layout = "us";
+        kb_layout = config.nomarchy.keyboard.layout;
+        kb_variant = config.nomarchy.keyboard.variant;
         follow_mouse = 1;
         touchpad.natural_scroll = true;
       };
@@ -120,12 +121,21 @@ in
         "$mod, V, togglefloating"
         "$mod SHIFT, E, exit"
 
-        # Theme picker: fuzzel menu over the presets; apply writes the
-        # state and runs home-manager switch (progress via notify-send).
-        "$mod, T, exec, nomarchy-theme-sync apply \"$(nomarchy-theme-sync list | fuzzel --dmenu --prompt 'theme> ')\""
+        # Theme picker (menu dispatcher): apply writes the state and
+        # runs home-manager switch (progress via notify-send).
+        "$mod, T, exec, nomarchy-menu theme"
         # Cycle the current theme's wallpapers (instant, no rebuild).
         "$mod SHIFT, T, exec, nomarchy-theme-sync bg next"
 
+        # Power menu (fuzzel dmenu via the nomarchy-menu dispatcher).
+        "$mod, Escape, exec, nomarchy-menu power"
+
+        # Notification centre (swaync).
+        "$mod, N, exec, swaync-client -t"
+
+        # Clipboard history (cliphist via the menu dispatcher).
+        "$mod CTRL, V, exec, nomarchy-menu clipboard"
+
         # Focus
         "$mod, H, movefocus, l"
         "$mod, L, movefocus, r"