Admin: Saving A Culture Post No Longer Depends On Its Media

Environment: Dev & QA
If an image or video upload failed while you were editing a culture post, the save went down with it — and the preview could show you something that had not actually been stored.
Saving a post and uploading its media are now separate. A failed upload no longer costs you the edit, the preview shows what is really there, and an upload error tells you what went wrong instead of failing silently.