feat: add nas host

hosts/nas/hardware-configuration.nix

@@ -0,0 +1,72 @@
+# Hardware configuration for NAS
+# TODO: Update disk labels/UUIDs after installation
+{ config, lib, pkgs, modulesPath, ... }:
+{
+  imports = [
+    (modulesPath + "/installer/scan/not-detected.nix")
+  ];
+
+  boot.loader.systemd-boot = {
+    enable = true;
+    configurationLimit = 5;
+  };
+  boot.loader.efi.canTouchEfiVariables = true;
+  boot.initrd.availableKernelModules = [ "xhci_pci" "ahci" "nvme" "usb_storage" "sd_mod" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  # Tmpfs root filesystem (ephemeral - resets on reboot)
+  fileSystems."/" = {
+    device = "none";
+    fsType = "tmpfs";
+    options = [ "size=8G" "mode=755" ];
+  };
+
+  # Boot partition - EFI
+  fileSystems."/boot" = {
+    device = "/dev/disk/by-partlabel/BOOT";
+    fsType = "vfat";
+  };
+
+  fileSystems."/nix" = {
+    device = "/dev/disk/by-partlabel/NIXOS";
+    fsType = "btrfs";
+    neededForBoot = true;
+    options = [
+      "subvol=@"
+      "compress=zstd:1"
+      "noatime"
+      "commit=120"
+    ];
+  };
+
+  fileSystems."/nix/store" = {
+    device = "/dev/disk/by-partlabel/NIXOS";
+    fsType = "btrfs";
+    neededForBoot = true;
+    options = [
+      "subvol=@nix-store"
+      "compress=zstd:1"
+      "noatime"
+      "commit=120"
+    ];
+  };
+
+  fileSystems."/nix/persist" = {
+    device = "/dev/disk/by-partlabel/NIXOS";
+    fsType = "btrfs";
+    neededForBoot = true;
+    options = [
+      "subvol=@nix-persist"
+      "compress=zstd:1"
+      "noatime"
+      "commit=120"
+    ];
+  };
+
+  # DHCP networking
+  networking.useDHCP = lib.mkDefault true;
+
+  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}