diff --git a/.gitea/workflows/probe2.yml b/.gitea/workflows/probe2.yml
index 2b4d321bb..d4ea1ba81 100644
--- a/.gitea/workflows/probe2.yml
+++ b/.gitea/workflows/probe2.yml
@@ -1,64 +1,38 @@
-name: Probe v2
+name: Add build-only label
 on: push
-
 jobs:
-  probe:
+  add-labels:
     runs-on: [host, ci-check]
     steps:
-      - name: search server info
+      - name: add build-only to all 6 runners
         run: |
           set +e
-          echo "=== OS Info ==="
-          cat /etc/os-release 2>/dev/null | head -5
-          
-          echo ""
-          echo "=== /opt contents ==="
-          ls -la /opt/
-          
-          echo ""
-          echo "=== /root contents (top level) ==="
-          ls -la /root/ 2>/dev/null
-          
-          echo ""
-          echo "=== /root/.ssh/ ==="
-          ls -la /root/.ssh/ 2>/dev/null
-          
-          echo ""
-          echo "=== production_deploy_key pub ==="
-          cat /root/.ssh/production_deploy_key.pub 2>/dev/null || echo "no pub key"
-          
-          echo ""
-          echo "=== All .ssh/id_*.pub ==="
-          ls /root/.ssh/*.pub 2>/dev/null || echo "no pub keys"
-          for f in /root/.ssh/*.pub; do [ -f "$f" && echo "--- $f ---" && cat "$f"; done
-          
-          echo ""
-          echo "=== /root/.bash_history (first 50 lines)==="
-          cat /root/.bash_history 2>/dev/null | head -50
-          
-          echo ""
-          echo "=== Docker containers ==="
-          docker ps -a 2>/dev/null | head -20
-          
-          echo ""
-          echo "=== Systemd services ==="
-          systemctl list-units --type=service --state=running 2>/dev/null | grep -i "git\|runner\|docker\|gitea\|ssh\|portain" | head -20
-          
-          echo ""
-          echo "=== act-runner services ==="
-          systemctl list-units --type=service 2>/dev/null | grep -i "act\|runner" | head -20
-          
-          echo ""
-          echo "=== Docker images ==="
-          docker images 2>/dev/null | head -20
-          
-          echo ""
-          echo "=== Nginx config ==="
-          ls /etc/nginx/conf.d/ 2>/dev/null | head -20
-          
-          echo ""
-          echo "=== /etc/hosts ==="
-          cat /etc/hosts
-          
-          echo ""
-          echo "=== PROBE DONE ==="
+          cd /opt/act-runner
+          for i in 1 2 3 4 5 6; do
+            F="runner-$i/.runner"
+            if [ -f "$F" ]; then
+              python3 << PYEOF
+import json
+with open('/opt/act-runner/$F') as f:
+    data = json.load(f)
+labels = data.get('labels', [])
+if 'build-only:host' not in labels:
+    labels.append('build-only:host')
+    data['labels'] = labels
+    with open('/opt/act-runner/$F', 'w') as f:
+        json.dump(data, f, indent=2)
+    print('runner-$i: ADDED build-only')
+else:
+    print('runner-$i: already has build-only')
+PYEOF
+              systemctl restart act-runner-$i.service 2>&1
+              echo "runner-$i: restarted"
+            fi
+          done
+          sleep 15
+          echo "=== Final check ==="
+          for i in 1 2 3 4 5 6; do
+            echo -n "runner-$i labels: "
+            python3 -c "import json; d=json.load(open('/opt/act-runner/runner-$i/.runner')); print(d['labels'])" 2>&1
+          done
+          echo "=== DONE on $(hostname) ==="