fix(longhorn): enable worker-1 scheduling, 400Gi reserved

32 degraded + 3 faulted volumes from replica rebuild failures.
cp-1/cp-2 over-committed; worker-1 had 602Gi free but scheduling
disabled. Enable it with 400Gi reserved for LLM weights.

- Add worker-1 to longhorn-nodes.yaml (allowScheduling: true)
- Add worker-1 disk config to add-disks-job (storageReserved: 400Gi,
  evictionRequested: false)

k8s/infra/longhorn/longhorn-add-disks-job.yaml

@@ -117,6 +117,22 @@ spec:
             echo "  ✓ talos-cp-3 already has $CP3_DISKS disks configured"
           fi
 
+          # worker-1: enable scheduling, reserve 400Gi for LLM weights,
+          # clear eviction flag that was set when scheduling was disabled.
+          echo "Configuring worker-1 disk..."
+          kubectl -n longhorn-system patch nodes.longhorn.io worker-1 --type merge -p '{
+            "spec": {
+              "disks": {
+                "default-disk-1030400000000": {
+                  "allowScheduling": true,
+                  "evictionRequested": false,
+                  "storageReserved": 429496729600
+                }
+              }
+            }
+          }'
+          echo "  ✓ worker-1 disk configured (400Gi reserved)"
+
           echo
           echo "Waiting for disks to be ready..."
           sleep 10