The cover row carried its own hidden file input and upload call, so authors
had two different image flows in one page.
- 添加封面 now opens window.JioSubmitMedia with type=image, the same dialog
the toolbar's 图片 button uses (mine / upload / external link).
- The picked image is stored as the full-size URL plus its attachment id,
matching FrontSubmitFeatured's image branch, which re-checks ownership
and sets the post thumbnail.
- Removes the now-unused uploadCover path, apiUpload/nonce imports, and the
.jio-creator__cover-input rule.
Contract added; 887 widget-system tests pass.
kate522
4cd296c066