Quartz Cron to Unix Converter

Convert Quartz schedules with second 0, wildcard year, and no L/W/# extensions into minute-based Unix cron.

Basic Quartz cron

ReadySupports second=0, wildcard year, and basic lists/ranges/steps. Quartz L, W, and # extensions are rejected rather than approximated.

Build → explain → project → verify

Treat cron as a deployment configuration: confirm dialect, field count, timezone, day-of-month/day-of-week behavior and several future runs before shipping.