d91fb669e9
Review (2026-08-21) found that stage 1 promoted ExecutionResult from a plain class to @dataclass(frozen=True) along the way. No caller mutates or compares these objects by identity, so the only externally visible change is structured log output. User opted to keep the upgrade. - domain/execution.py module docstring: explicit note that the frozen + value-equality form is a deliberate enhancement, not a behavioral accident - CLAUDE.md "Schedule service layering" lesson: add a "don't silently upgrade dataclass-ness during a structural-only refactor" note so future refactors copy class definitions verbatim unless they intend to tighten semantics explicitly No code change; tests still 29 green. Co-Authored-By: Claude <noreply@anthropic.com>
Schedule Executor
独立调度执行服务，内置 APScheduler。
- Cron 任务持久化到 MySQL 的
apscheduler_jobs表； - FastAPI Backend 创建运行记录和 Outbox 事件后，通过 HTTP 尝试立即推送；
- HTTP 推送失败时，Executor 继续轮询 MySQL
outbox_events，保证任务不会丢失； - Executor 负责 DAG 节点派发、稳定版本执行、重试、状态推进和结果回写；
- 不依赖 Redis，MySQL 是调度状态与幂等状态的唯一权威。