fix: correct PostgreSQL mountPath and add external NodePort services

- Fix postgres.yaml mountPath to /home/postgres/pgdata matching timescaledb-ha PGDATA
- Add NodePort services for external access: PostgreSQL (30432), OpenSearch (30920)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

deploy/opensearch.yaml

@@ -82,3 +82,17 @@ spec:
     - port: 9300
       targetPort: 9300
       name: transport
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: opensearch-external
+  namespace: cameleer
+spec:
+  type: NodePort
+  selector:
+    app: opensearch
+  ports:
+    - port: 9200
+      targetPort: 9200
+      nodePort: 30920

deploy/postgres.yaml

@@ -35,7 +35,7 @@ spec:
                   key: POSTGRES_PASSWORD
           volumeMounts:
             - name: data
-              mountPath: /var/lib/postgresql/data
+              mountPath: /home/postgres/pgdata
           resources:
             requests:
               memory: "1Gi"
@@ -89,3 +89,17 @@ spec:
     - port: 5432
       targetPort: 5432
       name: postgres
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: postgres-external
+  namespace: cameleer
+spec:
+  type: NodePort
+  selector:
+    app: postgres
+  ports:
+    - port: 5432
+      targetPort: 5432
+      nodePort: 30432