Version History for Entries

As a writer, I want to see previous versions of my entries and restore an earlier draft if needed so I can revise freely without fear of losing earlier work. Each explicit save (plus auto-saves every few minutes while the editor is open) would create a timestamped snapshot stored server-side. From the editor, writers could open a Version History panel showing all snapshots with relative timestamps, a diff view highlighting what changed, and a Restore button that loads the selected version as the current draft.