fix(ci): use server-side apply for ArgoCD install

applicationsets CRD exceeds 262144-byte annotation limit with client-side
apply. --server-side bypasses the last-applied-configuration annotation.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KoJ6zVHxYtUKtSNXinmct7

Author: 2 people

.github/workflows/ci.yml

@@ -82,7 +82,7 @@ jobs:
       - name: Install ArgoCD
         run: |
           kubectl create namespace argocd
-          kubectl apply -n argocd \
+          kubectl apply --server-side -n argocd \
             -f "https://raw.githubusercontent.com/argoproj/argo-cd/stable/manifests/install.yaml"
           kubectl rollout status deployment/argocd-server -n argocd --timeout=180s
 
@@ -184,7 +184,7 @@ jobs:
       - name: Re-install ArgoCD
         run: |
           kubectl create namespace argocd
-          kubectl apply -n argocd \
+          kubectl apply --server-side -n argocd \
             -f "https://raw.githubusercontent.com/argoproj/argo-cd/stable/manifests/install.yaml"
           kubectl rollout status deployment/argocd-server -n argocd --timeout=180s