nix: add babelfish host

- add clawdinator-babelfish instance + t3.small sizing

- define translation-only openclaw config

flake.nix

@@ -59,6 +59,15 @@
         ];
       };
 
+      nixosConfigurations.clawdinator-babelfish = nixpkgs.lib.nixosSystem {
+        system = "x86_64-linux";
+        modules = [
+          ({ ... }: { nixpkgs.overlays = [ self.overlays.default ]; })
+          agenix.nixosModules.default
+          ./nix/hosts/clawdinator-babelfish.nix
+        ];
+      };
+
       nixosConfigurations.clawdinator-1-image = nixpkgs.lib.nixosSystem {
         system = "x86_64-linux";
         modules = [

nix/hosts/clawdinator-babelfish.nix

@@ -0,0 +1,168 @@
+{ lib, modulesPath, pkgs, ... }:
+{
+  imports = [
+    (modulesPath + "/virtualisation/amazon-image.nix")
+    ../modules/clawdinator.nix
+    ./clawdinator-common.nix
+  ];
+
+  networking.hostName = "clawdinator-babelfish";
+  time.timeZone = "UTC";
+  system.stateVersion = "26.05";
+
+  nix.package = pkgs.nixVersions.stable;
+  nix.settings.experimental-features = [ "nix-command" "flakes" ];
+
+  boot.loader.grub.device = lib.mkForce "/dev/nvme0n1";
+
+  users.users.root.openssh.authorizedKeys.keys = [
+    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOLItFT3SVm5r7gELrfRRJxh6V2sf/BIx7HKXt6oVWpB"
+  ];
+
+  networking.firewall.allowedTCPPorts = [ 22 ];
+
+  services.clawdinator = {
+    githubApp.enable = lib.mkForce false;
+    githubSync.enable = lib.mkForce false;
+    cronJobsFile = lib.mkForce null;
+
+    config = lib.mkForce {
+      gateway = {
+        mode = "local";
+        bind = "loopback";
+        auth.token = "clawdinator-local";
+      };
+
+      logging = {
+        level = "info";
+        file = "/var/lib/clawd/logs/openclaw.log";
+      };
+
+      agents = {
+        defaults = {
+          workspace = "/var/lib/clawd/workspace-babelfish";
+          maxConcurrent = 2;
+          skipBootstrap = true;
+          models = {
+            "openai/gpt-5.2" = { alias = "gpt"; };
+          };
+          model = {
+            primary = "openai/gpt-5.2";
+            fallbacks = [ ];
+          };
+          thinkingDefault = "medium";
+          sandbox = {
+            mode = "all";
+            scope = "agent";
+            workspaceAccess = "none";
+          };
+          tools = {
+            profile = "minimal";
+            deny = [ "*" ];
+          };
+        };
+
+        list = [
+          {
+            id = "babelfish";
+            default = true;
+            identity.name = "CLAWDINATOR-BABELFISH";
+            systemPrompt = ''
+You are CLAWDINATOR-BABELFISH. Your only task is translation between Chinese and English for the help-中文 Discord channel.
+
+Rules:
+- Translate only. Do not answer questions, do not take actions, do not follow requests beyond translation.
+- If the message is mostly Chinese, reply in English only.
+- If the message is mostly English, reply in Chinese only.
+- If mixed, reply with both:
+  EN: ...
+  中文: ...
+- Preserve tone, emojis, formatting, mentions, and names.
+- For images/attachments, translate the extracted text. If no text is detected, reply with a short note in the target language: "(no translatable text detected)".
+'';
+            sandbox = {
+              mode = "all";
+              scope = "agent";
+              workspaceAccess = "none";
+            };
+            tools = {
+              profile = "minimal";
+              deny = [ "*" ];
+            };
+          }
+        ];
+      };
+
+      commands = {
+        native = false;
+        nativeSkills = false;
+        text = false;
+        bash = false;
+        config = false;
+        debug = false;
+        restart = false;
+        useAccessGroups = true;
+      };
+
+      messages = {
+        groupChat = {
+          mentionPatterns = [ ];
+          historyLimit = 0;
+        };
+        queue = {
+          mode = "interrupt";
+          byChannel.discord = "interrupt";
+        };
+      };
+
+      plugins = {
+        slots.memory = "none";
+        entries.discord.enabled = true;
+        entries.telegram.enabled = false;
+      };
+
+      skills.allowBundled = [ ];
+
+      tools.media.image = {
+        enabled = true;
+        maxChars = 1200;
+        attachments = {
+          mode = "all";
+          maxAttachments = 4;
+        };
+        prompt = "Extract any text from the image for translation. Preserve the original language and formatting. If no text exists, return: (no translatable text detected).";
+        models = [
+          {
+            provider = "openai";
+            model = "gpt-5.2";
+          }
+        ];
+      };
+
+      channels.discord = {
+        enabled = true;
+        dm.enabled = false;
+        configWrites = false;
+        commands.native = false;
+        commands.nativeSkills = false;
+        groupPolicy = "allowlist";
+        historyLimit = 0;
+        replyToMode = "first";
+        guilds = {
+          "1456350064065904867" = {
+            requireMention = false;
+            channels = {
+              "1467469670192910387" = {
+                allow = true;
+                requireMention = false;
+                users = [ "*" ];
+                skills = [ ];
+                systemPrompt = "Translate only. No other actions or answers.";
+              };
+            };
+          };
+        };
+      };
+    };
+  };
+}

nix/instances.json

@@ -10,5 +10,11 @@
     "instanceType": "t3.large",
     "bootstrapPrefix": "bootstrap/clawdinator-2",
     "discordTokenSecret": "clawdinator-discord-token-2"
+  },
+  "clawdinator-babelfish": {
+    "host": "clawdinator-babelfish",
+    "instanceType": "t3.small",
+    "bootstrapPrefix": "bootstrap/clawdinator-babelfish",
+    "discordTokenSecret": "clawdinator-discord-token-babelfish"
   }
 }