fix(docker): 添加 Kafka/Zookeeper JVM 时区配置

- 添加 KAFKA_OPTS="-Duser.timezone=Asia/Shanghai" 设置 JVM 时区
- 挂载 /usr/share/zoneinfo 确保容器内有完整的时区数据

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/services/docker-compose.yml

@@ -61,9 +61,12 @@ services:
       TZ: Asia/Shanghai
       ZOOKEEPER_CLIENT_PORT: 2181
       ZOOKEEPER_TICK_TIME: 2000
+      # Java timezone for confluentinc images
+      KAFKA_OPTS: "-Duser.timezone=Asia/Shanghai"
     volumes:
       - /etc/localtime:/etc/localtime:ro
       - /etc/timezone:/etc/timezone:ro
+      - /usr/share/zoneinfo:/usr/share/zoneinfo:ro
     healthcheck:
       test: ["CMD", "nc", "-z", "localhost", "2181"]
       interval: 10s
@@ -91,9 +94,12 @@ services:
       KAFKA_INTER_BROKER_LISTENER_NAME: PLAINTEXT
       KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
       KAFKA_AUTO_CREATE_TOPICS_ENABLE: "true"
+      # Java timezone for confluentinc images
+      KAFKA_OPTS: "-Duser.timezone=Asia/Shanghai"
     volumes:
       - /etc/localtime:/etc/localtime:ro
       - /etc/timezone:/etc/timezone:ro
+      - /usr/share/zoneinfo:/usr/share/zoneinfo:ro
     healthcheck:
       test: ["CMD", "kafka-topics", "--bootstrap-server", "localhost:9092", "--list"]
       interval: 30s