Safer document drafts, accurate run details, and fewer duplicate runs

Document drafts are preserved when a polish pass fails, diagram auto-fix no longer deletes content, and paused tasks stop causing duplicate runs.

This update protects your document content and cleans up how runs behave. Drafts are no longer lost when a polish pass fails, and the editor's diagram auto-fix no longer deletes text. Paused tasks also stop causing duplicate runs.

• Your original draft is now kept when a polished reply comes back empty or is rejected, instead of leaving you with an empty document.
• The editor's diagram auto-fix no longer mistakes regular text for a diagram and deletes the content around it.
• Paused or queued pull request tasks no longer start duplicate runs or fail while waiting.
• The Runs tab now shows the correct computer after a run is re-routed.