A partial upload only told the admin "some files failed" with no way to
find out which ones — even though the data existed. The backend already
returns per-file rejections (response.errors: [{filename, error}]) and the
progress hook already exposes failedPhotos, but both were dropped.
Add a dismissible failure report to the upload modal listing every file
that didn't make it into the gallery, grouped by stage with its reason:
- rejected: per-file validation rejections from the upload response
(previously discarded entirely)
- transfer: whole-chunk request failures (now captured with the error,
not just the filename)
- processing: background-worker failures from useUploadProgress.failedPhotos
Replace the count-only "some files failed" toast with one that points at
the list. Add en/de keys under upload.failures.* and a component test
covering the rejected + processing rows and dismissal.
André Deuerling
1b0100cfad