The schedule editor exposed only a raw 5-field cron input, which is
unfriendly for the common "daily at 3am" or "one-time next week" cases.
Add a Simple mode (now the default) that builds the cron from a
frequency and time: Once, Hourly, Daily, Weekly, and Monthly. Advanced
mode keeps the raw cron input as an escape hatch.
- Simple mode compiles to the existing cron_expression on save; no
schema or scheduler changes.
- One-time schedules reuse the existing delete-after-run flag: selecting
Once turns it on and locks it so the task runs a single time (cron has
no year field, so without it the task would repeat yearly).
- Editing a task opens in Simple mode when its cron maps to one of the
simple shapes, otherwise in Advanced; switching a custom cron to Simple
warns that it will be replaced.
- Day-of-week uses frosted toggle chips and the time uses hour/minute
selects so the controls match the rest of the editor.
Anso