fix(argocd): switch to ingress-nginx, fix shared resource warning, add insecure mode

cluster/platform/argocd/ingress.yaml

@@ -0,0 +1,31 @@
+# ------------------------------------------------------------------------------
+# Ingress — ArgoCD via ingress-nginx
+# Temporary until Cilium Gateway API is stable
+# TLS terminated at ingress, argocd-server runs in insecure mode
+# ------------------------------------------------------------------------------
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: argocd
+  namespace: argocd
+  annotations:
+    nginx.ingress.kubernetes.io/ssl-passthrough: "false"
+    nginx.ingress.kubernetes.io/backend-protocol: "HTTP"
+    nginx.ingress.kubernetes.io/force-ssl-redirect: "true"
+spec:
+  ingressClassName: nginx
+  tls:
+    - hosts:
+        - argocd.local.mk-labs.cloud
+      secretName: argocd-tls
+  rules:
+    - host: argocd.local.mk-labs.cloud
+      http:
+        paths:
+          - path: /
+            pathType: Prefix
+            backend:
+              service:
+                name: argocd-server
+                port:
+                  number: 80