simplify production database configuration

deploy/ack/secrets.example.yaml

@@ -1,15 +1,16 @@
 # Example only. Replace every placeholder and keep the populated file out of Git.
-# Secrets marked "(local development only)" are not referenced by the first
-# production deployment; keep or drop them as your local workflow requires.
+# Provider, OSS, public API, and webhook secrets are optional add-ons and are
+# intentionally not injected by the minimal production Deployment.
 apiVersion: v1
 kind: Secret
 metadata:
-  name: zhinian-web-db
+  name: zhinian-rds-ca
   namespace: zhinian
 type: Opaque
 stringData:
-  # Local development only: the production Web workload holds no RDS credentials.
-  DATABASE_URL: postgresql://APP_USER:APP_PASSWORD@RDS_INTERNAL_HOST:5432/APP_DATABASE
+  # Public CA certificate for the RDS endpoint used in DATABASE_URL.
+  ca.pem: |
+    REPLACE_WITH_RDS_CA_PEM
 ---
 apiVersion: v1
 kind: Secret
@@ -19,17 +20,7 @@ metadata:
 type: Opaque
 stringData:
   # Manual schema execution only: run database/migrations/*.sql with this role.
-  DATABASE_URL: postgresql://MIGRATION_USER:MIGRATION_PASSWORD@RDS_INTERNAL_HOST:5432/APP_DATABASE
----
-apiVersion: v1
-kind: Secret
-metadata:
-  name: zhinian-worker-auth
-  namespace: zhinian
-type: Opaque
-stringData:
-  # Local development only: the Node Worker is not deployed in production.
-  ZHINIAN_INTERNAL_WORKER_TOKEN: REPLACE_WITH_A_LONG_RANDOM_VALUE
+  DATABASE_URL: "postgresql://MIGRATION_USER:MIGRATION_PASSWORD@RDS_INTERNAL_HOST:5432/APP_DATABASE?sslmode=verify-full&sslrootcert=/etc/zhinian/rds/ca.pem"
 ---
 apiVersion: v1
 kind: Secret
@@ -50,7 +41,7 @@ metadata:
 type: Opaque
 stringData:
   # Application role (least privilege): grants applied manually after the SQL.
-  DATABASE_URL: postgresql://APP_USER:APP_PASSWORD@RDS_INTERNAL_HOST:5432/APP_DATABASE
+  DATABASE_URL: "postgresql://APP_USER:APP_PASSWORD@RDS_INTERNAL_HOST:5432/APP_DATABASE?sslmode=verify-full&sslrootcert=/etc/zhinian/rds/ca.pem"
 ---
 apiVersion: v1
 kind: Secret
@@ -63,35 +54,3 @@ stringData:
   # administrator exists. Password must be at least 8 characters.
   ZHINIAN_BOOTSTRAP_ADMIN_PHONE: REPLACE_WITH_ADMIN_PHONE
   ZHINIAN_BOOTSTRAP_ADMIN_PASSWORD: REPLACE_WITH_STRONG_PASSWORD
-  ZHINIAN_BOOTSTRAP_ADMIN_NAME: 平台超级管理员
----
-apiVersion: v1
-kind: Secret
-metadata:
-  name: zhinian-go-providers
-  namespace: zhinian
-type: Opaque
-stringData:
-  # Provider credentials. Delete keys for providers you do not use; the Go
-  # workload tolerates missing optional keys and fails closed when an enabled
-  # engine has no credentials.
-  VOLCENGINE_ACCESS_KEY_ID: REPLACE_OR_REMOVE
-  VOLCENGINE_SECRET_ACCESS_KEY: REPLACE_OR_REMOVE
-  JIMENG_IMAGE_GENERATE_46_REQ_KEY: REPLACE_OR_REMOVE
-  EVOLINK_API_KEY: REPLACE_OR_REMOVE
-  SEEDANCE_API_KEY: REPLACE_OR_REMOVE
-  BAILIAN_API_KEY: REPLACE_OR_REMOVE
-  DASHSCOPE_API_KEY: REPLACE_OR_REMOVE
-  ALI_OSS_ACCESS_KEY_ID: REPLACE_OR_REMOVE
-  ALI_OSS_ACCESS_KEY_SECRET: REPLACE_OR_REMOVE
----
-apiVersion: v1
-kind: Secret
-metadata:
-  name: zhinian-go-secrets
-  namespace: zhinian
-type: Opaque
-stringData:
-  ZHINIAN_WEBHOOK_SECRET: REPLACE_WITH_A_LONG_RANDOM_VALUE
-  ZHINIAN_API_KEYS: REPLACE_WITH_PUBLIC_API_KEYS
-  ZHINIAN_INTERNAL_WORKER_TOKEN: REPLACE_OR_REMOVE