Pin the new five-layer contract so a later refactor can't silently break
an import surface or lifecycle:
- domain: ExecutionResult defaults, terminal/failed state-set invariants,
naive_utc normalization (import-side-effect-free)
- infrastructure.storage: SchedulerStorageClient base64 upload via
httpx.MockTransport (no live server; base_url required for relative URL)
- scheduling: CronScheduler start/close lifecycle, global trigger cleared
- application: SchedulerService wires cron + orchestrator + worker, handler
dispatch table points at the wired NodeExecutor
- execution: schedule.notebook_runner shim re-exports the real main
25 schedule tests green; schedule/pyproject.toml untouched.
Co-Authored-By: Claude <noreply@anthropic.com>
