feat: add vault, external-secrets, monitoring, harbor, jenkins, sonarqube, headlamp

Two-source ArgoCD Applications (upstream chart + values from this repo),
same pattern as cluster-bootstrap. Each service paired with a *-config
Application for HTTPRoute/RBAC/ClusterSecretStore that must exist
after the main install (separate sync wave).

Chart targetRevision pins and HTTPRoute backendRef service names are
best-effort - marked TODO/verify in-file since no live helm repo access
this session to confirm current versions or actual rendered svc names.

manifests/jenkins/values.yaml

@@ -0,0 +1,14 @@
+controller:
+  serviceType: ClusterIP
+  persistence:
+    storageClass: nfs-delete
+    size: 20Gi
+  resources:
+    requests:
+      cpu: 250m
+      memory: 1Gi
+    limits:
+      memory: 2Gi
+
+agent:
+  enabled: true