fix: set correct working directory and create home for ai-worker

modules/nixos/services/openclaw_node.nix

@@ -48,7 +48,7 @@ in {
         Type = "exec";
         User = cfg.user;
         Group = cfg.user;
-        WorkingDirectory = "/var/lib/${cfg.user}";
+        WorkingDirectory = "/home/${cfg.user}";
         ExecStart = ''
           ${openclawPkg}/bin/openclaw \
             node run \

users/ai-worker.nix

@@ -2,6 +2,8 @@
   users.users.ai-worker = {
     isSystemUser = true;
     group = "ai-worker";
+    home = "/home/ai-worker";
+    createHome = true;
     extraGroups = [ "docker" ];
     shell = pkgs.bashInteractive;
     openssh.authorizedKeys.keys = [