feat: add Redpanda and wp-deploy-coordinator to Legion

- Redpanda single-node StatefulSet in platform namespace
- wp-coordinator deployment consuming wp.deploy topic
- RBAC for coordinator to exec into harmonic-wordpress pods
- R2 credentials via ExternalSecret (no SSH key needed on coordinator)
- Sites config as ConfigMap — add new WP sites without code changes

servers/legion/apps/redpanda.yaml

@@ -0,0 +1,20 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: redpanda
+  namespace: argocd
+spec:
+  project: default
+  source:
+    repoURL: https://git.neuralplatform.ai/will/infrastructure.git
+    targetRevision: main
+    path: servers/legion/k8s/redpanda
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: platform
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=true

servers/legion/apps/wp-coordinator.yaml

@@ -0,0 +1,20 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: wp-coordinator
+  namespace: argocd
+spec:
+  project: default
+  source:
+    repoURL: https://git.neuralplatform.ai/will/infrastructure.git
+    targetRevision: main
+    path: servers/legion/k8s/wp-coordinator
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: platform
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=true