feat(n8n): enable task runners

hosts/AZ-CLD-1/secrets.nix

@@ -28,6 +28,9 @@
       n8n-env = {
         file = ../../secrets/n8n-env.age;
       };
+      n8n-runner-auth-token = {
+        file = ../../secrets/n8n-runner-auth-token-cld.age;
+      };
       netbird-auth-secret = {
         file = ../../secrets/netbird-auth-secret.age;
       };

hosts/AZ-CLD-1/services/n8n.nix

@@ -4,7 +4,13 @@
 in {
   services.${serviceName} = {
     enable = true;
-    environment.WEBHOOK_URL = "https://wf.az-gruppe.com";
+    environment = {
+      WEBHOOK_URL = "https://wf.az-gruppe.com";
+      N8N_RUNNERS_ENABLED = true;
+      N8N_NATIVE_PYTHON_RUNNER = true;
+      N8N_RUNNERS_AUTH_TOKEN_FILE = config.age.secrets.n8n-runner-auth-token.path;
+    };
+    taskRunners.enable = true;
   };
 
   systemd.services.${serviceName}.serviceConfig = {