What
Publishing an artifact can now carry your own thumbnail images, one for light and one for dark. They must be PNG or JPG and under a size cap, and if the server refuses the custom image the publish is retried automatically with the auto-generated screenshot and a warning.
Details
- Thumbnail and thumbnailDark are validated by a new check on both the image link and its content, limited to PNG/JPG with size caps.
- A server rejection comes back as a distinct thumbnail_rejected reason, which triggers the retry rather than failing the publish.
Evidence
The custom thumbnail was not accepted by the server
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
Names in the bundlethumbnailthumbnailDark