feat(data-ana): 完善学情诊断服务并添加ClickHouse降级模式
config.py ClickHouse连接改可选+加DEV_MODE/kafka_brokers clickhouse_client.py 降级模式: host为空时返回None main.py 端点先查ClickHouse降级返回骨架数据+新增errorbook 新增clickhouse-init.sql创建宽表和错题表 Gateway添加/analytics路由
This commit is contained in: