CHORE(k8s): update PostgreSQL namespace reference

- Update PostgreSQL service namespace reference
- Fix database connection configuration

deploy/k8s/base/deployment.yaml

@@ -41,12 +41,12 @@ spec:
           value: "https://api.groq.com/openai/v1"
         # Chainlit uses asyncpg directly (not SQLAlchemy)
         - name: CHAINLIT_DATABASE_URL
-          value: "postgresql://bluemayne:$(POSTGRES_PASSWORD)@postgresql-cnpg-rw.postgresql-cnpg.svc.cluster.local:5432/mas"
+          value: "postgresql://bluemayne:$(POSTGRES_PASSWORD)@postgresql-rw.postgresql.svc.cluster.local:5432/mas"
         # SQLAlchemy format (if needed)
         - name: DATABASE_URL
-          value: "postgresql://bluemayne:$(POSTGRES_PASSWORD)@postgresql-cnpg-rw.postgresql-cnpg.svc.cluster.local:5432/mas"
+          value: "postgresql://bluemayne:$(POSTGRES_PASSWORD)@postgresql-rw.postgresql.svc.cluster.local:5432/mas"
         - name: POSTGRES_HOST
-          value: "postgresql-cnpg-rw.postgresql-cnpg.svc.cluster.local"
+          value: "postgresql-rw.postgresql.svc.cluster.local"
         - name: POSTGRES_PORT
           value: "5432"
         - name: POSTGRES_USER