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

hosts/desktop.nix

@@ -0,0 +1,48 @@
+{ lib, pkgs, ... }:
+let
+  hardwareConfigPath = builtins.toString ./.
+    + "/../modules/nixos/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
+    ../modules/nixos/audio.nix
+    ../modules/nixos/graphics.nix
+
+    # Desktop Environments
+    ../modules/nixos/desktops/plasma.nix # KDE Plasma (for gaming)
+    ../modules/nixos/desktops/hyprland # Hyprland (for development)
+
+    # Desktop Apps & Theme
+    ../modules/nixos/desktops/apps/browsers.nix
+    ../modules/nixos/desktops/apps/terminals.nix
+    ../modules/nixos/desktops/themes/catppuccin.nix # Or use themes/default.nix for Adwaita
+
+    # Gaming & Features
+    ../modules/nixos/desktops/gaming.nix
+    ../modules/nixos/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";
+}