Schedule demos (activity windows + order expire)

Open-source samples, not a production campaign/acquiring stack. HTTP APIs require DevelopmentOnly / APP_ENABLE_DEV_TOOL.

Scenario	Approach	Precision
Activity once / daily window	demo_activities + activity:sync-status (every minute) + live IsActive	Gate ~ clock skew; stored status may lag ~1 min
Unpaid order auto-cancel	orders.expire_at + Delay job + order:cancel-expired every minute	Usually seconds; pay path re-checks expire_at

Full request examples: see the Chinese version.

Admin UI: System → Demo Activities. API: /api/admin/demo-activities.

Configurable cron (whitelist)

Per-tenant whitelist handlers on landlord flexible_schedules (unique handler+tenant_id, optional payload JSON). Tenant backup stays on kernel tenant:backup-scheduled. Tick: flexible-schedule:tick every minute. See Chinese doc for seed/permission notes.