refactor: reorganize, add package (opencode, osgrep, beads), add ai agent shell

modules/nixos/hosts/desktop.nix

@@ -1,48 +0,0 @@
-{ lib, pkgs, ... }:
-let
-  hardwareConfigPath = builtins.toString ./.
-    + "/../desktops/hardware-configuration.nix";
-  hardwareModule = if builtins.pathExists hardwareConfigPath then
-    import hardwareConfigPath
-  else
-    (_: { });
-in {
-  # Unified desktop configuration for gaming and development
-  # Includes both KDE Plasma and Hyprland - switch at login screen
-
-  # Import hardware and desktop configurations
-  imports = [
-    # Hardware
-    hardwareModule
-
-    # Audio & Graphics
-    ../audio.nix
-    ../graphics.nix
-
-    # Desktop Environments
-    ../desktops/plasma.nix # KDE Plasma (for gaming)
-    ../desktops/hyprland # Hyprland (for development)
-
-    # Desktop Apps & Theme
-    ../desktops/apps/browsers.nix
-    ../desktops/apps/terminals.nix
-    ../desktops/themes/catppuccin.nix # Or use themes/default.nix for Adwaita
-
-    # Gaming & Features
-    ../desktops/gaming.nix
-    ../bluetooth.nix
-  ];
-
-  # Boot configuration with CachyOS LTS kernel
-  boot = {
-    loader.systemd-boot.enable = true;
-    loader.efi.canTouchEfiVariables = true;
-    kernelPackages = pkgs.linuxPackages_cachyos-lts;
-  };
-
-  # Hostname
-  networking.hostName = "desktop";
-
-  # This value determines the NixOS release compatibility
-  system.stateVersion = "24.05";
-}