iii-cron The worker schedules a registered function to run on a recurring cron expression. It exposes no callable functions — its entire surface is one trigger type, , bound via . On every firing the engine builds an event payload, optionally evaluates a condition function, acquires a distributed lock through the configured adapter, and invokes the target function. Each firing reports vs. so drift and reentrancy are observable from inside the handler. The schedule grammar is the seven-field cron dialect — — where the year is optional and defaults to . Both six- and seven-field forms work; the…