给内测补上每日加密备份、宕机告警和日志上限。

主机安装和一次恢复演练留给产品。页面没有变化。

Co-Authored-By: Grok (agent loop)

deploy/docker-compose.postgres.yml

@@ -2,6 +2,11 @@ services:
   postgres:
     image: postgres:17-alpine
     restart: unless-stopped
+    logging:
+      driver: json-file
+      options:
+        max-size: "20m"
+        max-file: "10"
     shm_size: 128mb
     env_file:
       - ${DATABASE_ENV_FILE:-../.env.staging.database}
@@ -30,6 +35,11 @@ services:
     image: ${WEB_IMAGE:-jyotisha-web:local}
     profiles: ["migration"]
     restart: "no"
+    logging:
+      driver: json-file
+      options:
+        max-size: "20m"
+        max-file: "10"
     env_file:
       - ${DATABASE_ENV_FILE:-../.env.staging.database}
     working_dir: /app/frontend
@@ -43,6 +53,11 @@ services:
     image: ${WEB_IMAGE:-jyotisha-web:local}
     profiles: ["migration-check"]
     restart: "no"
+    logging:
+      driver: json-file
+      options:
+        max-size: "20m"
+        max-file: "10"
     env_file:
       - ${DATABASE_ENV_FILE:-../.env.staging.database}
     working_dir: /app/frontend