What probably matters to youSection of the release
What
The routine-creation instructions now always list run_once_at as an alternative to a cron expression, exactly one of which is required. Claude therefore always knows a routine can fire a single time at a future UTC timestamp and then disable itself.
Evidence
RFC3339 UTC timestamp. Must be in the future. Fires once, then auto-disables.
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
