docs: Scheduled checkpoints

[danielvallance]

No description provided.

[Copilot]

Pull request overview

Documents recurring scheduled checkpoints and links them with existing checkpoint guidance.

Changes:

• Adds the checkpoint scheduled action with an API example.
• Documents constraints, failure behavior, naming, and history.
• Adds cross-links between scheduling and checkpoint pages.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
pages/features/cron-jobs.mdx	Documents scheduled checkpoint configuration and behavior.
pages/features/checkpoints.mdx	Adds scheduled-checkpoint references and limitations.

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[unikraft-bot]

📝 [vale] _{reported by reviewdog 🐶}
[Microsoft.Semicolon] Try to simplify this sentence.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

Suppressed comments (1)

pages/features/cron-jobs.mdx:281

• The checkpoint history shown in the linked section contains names and creation times, not readiness state, so it cannot confirm that an asynchronous checkpoint finished successfully. Use history to discover the generated checkpoint, then tell readers to inspect it and verify that it reaches the checkpoint state before treating the occurrence as successful.

  Because the instance status reports only the next elapse of a schedule and not the result of past runs, use the checkpoint history to confirm that occurrences produce checkpoints.