Upload rollback fix: after uploading a file, do not store the remote
mtime/etag from the upload response PROPFIND. Nextcloud and other
WebDAV servers can change a file's Last-Modified or ETag after upload
(thumbnail generation, checksums, folder aggregation). Storing stale
metadata caused the next sync to see remoteChanged=true and download
the file back, reverting the upload. Leaving remoteAfterTransfer=null
forces the SKIP reconciliation pass to fill in remote state from the
directory listing, which is the same source all future syncs use.
Icon: update foreground to thick ribbons with 3D highlight stripes
(blue/green/red/orange, width 12 + highlight 5); update background
to dark space theme with star dots.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
