Fix StatefulSet update: use server-side apply with force-conflicts

StatefulSets don't allow updating immutable spec fields with regular
kubectl apply. Use --server-side --force-conflicts to handle this,
falling back to --force if server-side apply isn't available.

Co-Authored-By: Claude Opus 4.6 <[email protected]>

Author: Darkhorse7stars

.github/workflows/deploy.yml

@@ -201,7 +201,8 @@ jobs:
         run: |
           kubectl apply -f k8s/api-service.yaml
           kubectl apply -f k8s/api-deployment.yaml
-          kubectl apply -f k8s/mpc-statefulset.yaml
+          kubectl apply -f k8s/mpc-statefulset.yaml --server-side --force-conflicts || \
+            kubectl apply -f k8s/mpc-statefulset.yaml --force
 
       - name: Apply dashboard
         run: |