feat(menu): network/bluetooth/capture/ask modules + keybindings cheatsheet

Build out the rofi menu system roadmap item:

- New nomarchy-menu modules: network (nmtui), bluetooth (blueman-manager),
  capture (grim/slurp submenu → clipboard/file), ask (free-text → claude
  CLI in a terminal), and keybinds (the SUPER+? cheatsheet).
- modules/home/keybinds.nix is now the single source of truth for both the
  Hyprland bind strings and the cheatsheet, so the two can't drift —
  hyprland.nix maps it into `bind`, rofi.nix renders the padded two-column
  sheet (generated/mouse binds live in its `extra` rows).
- New binds: SUPER+Space (quick launch), SUPER+M (main menu), SUPER+?
  (cheatsheet). SUPER+D stays rofi -show drun.
- Ask Claude pulls claude-code fresh from npm via `npx
  @anthropic-ai/claude-code@latest` (the nixpkgs package lags model
  releases); nodejs is bundled for npx.

nix flake check passes.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

modules/home/hyprland.nix

@@ -17,6 +17,11 @@ let
         "$mod SHIFT, ${ws}, movetoworkspace, ${ws}"
       ])
     9);
+
+  # The keyboard binds — single source shared with the SUPER+? cheatsheet
+  # (rofi.nix renders the same list). Edit them in ./keybinds.nix.
+  keybinds = import ./keybinds.nix;
+  mkBind = b: "${b.mods}, ${b.key}, ${b.action}";
 in
 {
   wayland.windowManager.hyprland = lib.mkIf config.nomarchy.hyprland.enable {
@@ -125,41 +130,11 @@ in
         force_default_wallpaper = lib.mkDefault 0;
       };
 
-      bind = [
-        "$mod, Return, exec, $terminal"
-        "$mod, D, exec, rofi -show drun"
-        "$mod, E, exec, $terminal -e yazi"
-        "$mod, Q, killactive"
-        "$mod, F, fullscreen"
-        "$mod, V, togglefloating"
-        "$mod SHIFT, E, exit"
-
-        # Theme picker (menu dispatcher): apply writes the state and
-        # runs home-manager switch (progress via notify-send).
-        "$mod, T, exec, nomarchy-menu theme"
-        # Cycle the current theme's wallpapers (instant, no rebuild).
-        "$mod SHIFT, T, exec, nomarchy-theme-sync bg next"
-
-        # Power menu (rofi dmenu via the nomarchy-menu dispatcher).
-        # Not Escape: Super+Escape gets swallowed before reaching the
-        # dispatcher on some setups (input methods / modal handling).
-        "$mod, X, 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"
-        "$mod, K, movefocus, u"
-        "$mod, J, movefocus, d"
-
-        # Screenshot region to clipboard
-        ", Print, exec, grim -g \"$(slurp)\" - | wl-copy"
-      ] ++ workspaceBinds;
+      # Rendered from ./keybinds.nix (the cheatsheet reads the same list),
+      # plus the generated per-workspace binds. Like exec-once above this
+      # stays a normal-priority list, so a downstream `bind = [...]`
+      # concatenates rather than replaces.
+      bind = map mkBind keybinds.binds ++ workspaceBinds;
 
       # Media keys via swayosd-client: it performs the action AND shows
       # the on-screen display (the nomarchy.osd module). e = repeat,