core(0004): 删 runs / usage_events 表 + cancel/SSE 改 task-level
usage_events 全代码库零引用,纯死代码;runs 表实质就是"task 当前 in-flight 状态"
影子表,tokens_p/c 写但从未被读,run_id 唯二实用是 broker 频道键 + cancel 参数 —
单活 run 形态下完全冗余,客户端只需 task_id。按"开发期不写兼容层"心智一把切干净。
- alembic 0004:DROP runs / usage_events,tasks 加 run_status (idle/running/cancelling/error) +
run_error 两列;ok/cancelled 终态都回 idle 不留持久标记,只有 error 持久
- ORM 删 Run / UsageEvent class
- Broker 全 task_id 索引,加 start(tid) 在新 run 前清 _done
- /v1/tasks/{tid}/runs/{rid}/{events,cancel} → /v1/tasks/{tid}/{events,cancel}
- POST /messages 返 {events_url} 去掉 run_id
- dev SPA: state.currentRunId → state.streaming(bool),路径去掉 /runs/{rid}/
- Smoke 18 case 全绿
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
caoqianming
2e519ab8a6