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>

.claude/settings.local.json

@@ -261,7 +261,8 @@
       "Bash(pkill -f \"qemu-system-x86_64.*NOMARCHY\\\\|qemu-system-x86_64.*nomarchy\")",
       "Bash(NOMARCHY_PATH=__TRACKED_VAR__ python3 pkgs/nomarchy-theme-sync/nomarchy-theme-sync.py --quiet apply summer-night --no-switch)",
       "Bash(NOMARCHY_PATH=__TRACKED_VAR__ python3 pkgs/nomarchy-theme-sync/nomarchy-theme-sync.py --quiet apply summer-day --no-switch)",
-      "Bash(xargs cat)"
+      "Bash(xargs cat)",
+      "Bash(nix-instantiate --parse modules/home/rofi.nix)"
     ]
   }
 }