Replace file-based JSON cron queue with DB-backed job queue (pp_cron_jobs,
pp_cron_schedules). New Domain\CronJob module: CronJobType (constants),
CronJobRepository (CRUD, atomic fetch, retry/backoff), CronJobProcessor
(orchestration with handler registration). Priority ordering guarantees
apilo_send_order (40) runs before sync tasks (50). Includes cron.php auth
protection, race condition fix in fetchNext, API response validation,
and DI wiring across all entry points. 41 new tests.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Jacek Pyziak
52119a0724