Summary by cubic

Updates automations to use natural‑language durations and align field names with the new Automation API. Implements duration and timeout strings and switches step identifiers from ref to key (PRODUCT-1906).

• New Features

  • Delay and wait_for_event now accept strings like "1 hour" and "1 day".

• Migration

  • Replace seconds with duration: string in delay steps.
  • Replace timeoutSeconds with timeout: string in wait_for_event.
  • Replace ref with key for step identifiers (interfaces and API parsing).

^{Written for commit e5a534e. Summary will update on new commits.}