Component catch-up: kube-prometheus-stack 65->88 (po v0.93, k8s 1.36); CRDs pre-applied

Co-Authored-By: Claude Opus 4.8 <[email protected]>

platform/monitoring/kube-prometheus-stack.yaml

@@ -17,7 +17,7 @@ spec:
   chart:
     spec:
       chart: kube-prometheus-stack
-      version: ">=65.0.0 <66.0.0"   # TODO(WS-OBS): pin at bring-up; Renovate maintains
+      version: ">=88.0.0 <89.0.0"   # k8s-1.36 catch-up (po v0.93; CRDs pre-applied server-side, Helm won't update them). Renovate maintains
       sourceRef:
         kind: HelmRepository
         name: prometheus-community