- m0021: usages JSON全量不截断为计费唯一事实源,req_tokens/resp_tokens同源冗余删除, 统计查询走JSON_EXTRACT+JSON_VALID守卫;backup_tables含llm_usage,dmig幂等(列不存在跳过) - m0025: 按项目统计费用,project_id NOT NULL DEFAULT '0'(哨兵=非项目调用,对齐org_id平台约定), idx_llm_usage_project(project_id,created_at);token绑定project_id全链透传落库 - 两迁移id字段与文件名一致性已校验;llm_call_trace新表走create_tables.py动态扫描models建表,无需迁移