add borg backup to thinkpad

hosts/nixos/thinkpad/system.nix

@@ -7,7 +7,7 @@
     ../../../modules/gnome/system.nix
     ../../../modules/tailscale.nix
     ../../../modules/login-display.nix
-    ../../../modules/borg/server.nix
+    ../../../modules/borg/client.nix
     ../../../modules/logiops.nix
   ];
 
@@ -242,6 +242,33 @@
       "/dev/nvme0n1" = "System_SSD";
     };
     showDiskUsage = true;
+    showBorgStatus = true;
+  };
+
+  # Borg backup configuration
+  services.borg-client-custom = {
+    enable = true;
+    repositoryUrl = "ssh://backup-box/./thinkpad";
+    backupPaths = [
+      "/home/yanlin/Archive"
+      "/home/yanlin/Credentials"
+      "/home/yanlin/Documents"
+    ];
+    backupFrequency = "*-*-* 00:00:00";
+    retention = {
+      keepDaily = 7;
+      keepWeekly = 4;
+      keepMonthly = 6;
+      keepYearly = 2;
+    };
+    passphraseFile = "/etc/borg-passphrase";
+
+    preHook = ''
+      echo "$(date): Starting Borg backup of ${config.networking.hostName}"
+    '';
+    postHook = ''
+      echo "$(date): Borg backup of ${config.networking.hostName} completed successfully"
+    '';
   };
 
 }