feat(attic): update storage config and refine system settings

- Switch disk device from `/dev/vda` to `/dev/sda` for compatibility.
- Add S3 storage configuration with bucket, region, and endpoint.
- Update system state version from `24.05` to `25.11`.
- Remove unused imports and clean up redundant attributes.

systems/x86_64-linux/attic/atticd.nix

@@ -31,6 +31,13 @@
 
       listen = "[::]:8080";
 
+      storage = {
+        type = "s3";
+        bucket = "attic";
+        region = "hel1";
+        endpoint = "https://hel1.your-objectstorage.com";
+      };
+
       # Data chunking
       #
       # Warning: If you change any of the values here, it will be

systems/x86_64-linux/attic/default.nix

@@ -1,9 +1,6 @@
 {
-  lib,
   ...
 }:
-with lib;
-with lib.metacfg;
 {
   imports = [
     ./hardware-configuration.nix
@@ -29,11 +26,11 @@ with lib.metacfg;
   security.tpm2.enable = false;
   security.tpm2.abrmd.enable = false;
 
-  networking.wireless.enable = false; # Enables wireless support via wpa_supplicant.
+  networking.wireless.enable = false;
   networking.firewall.allowedTCPPorts = [ 8080 ];
   networking.firewall.allowPing = true;
 
   powerManagement.cpuFreqGovernor = "ondemand";
 
-  system.stateVersion = "24.05";
+  system.stateVersion = "25.11";
 }

systems/x86_64-linux/attic/hardware-configuration.nix

@@ -14,7 +14,7 @@
     ./disko.nix
     (modulesPath + "/profiles/qemu-guest.nix")
   ];
-  disko.devices.disk.main.device = "/dev/vda";
+  disko.devices.disk.main.device = "/dev/sda";
 
   boot.initrd.availableKernelModules = [
     "ahci"