feat: encrypted root partition with btrfs(except /boot partition)

hosts/idols/ai/default.nix

@@ -37,15 +37,6 @@
   ];
 
   boot.kernelParams = [ "nvidia.NVreg_PreserveVideoMemoryAllocations=1" ];
-  # Bootloader.
-  boot.loader = {
-    efi = {
-      canTouchEfiVariables = true;
-      efiSysMountPoint = "/boot/efi"; # ← use the same mount point here.
-    };
-    systemd-boot.enable = true;
-
-  };
 
   networking = {
     hostName = "ai";
@@ -106,5 +97,5 @@
   # this value at the release version of the first install of this system.
   # Before changing this value read the documentation for this option
   # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
-  system.stateVersion = "22.11"; # Did you read the comment?
+  system.stateVersion = "23.11"; # Did you read the comment?
 }