Two issues with the 0.37.0 folder zip-download:
1. Hang / server error (reported as 501) on "some folders". archive_dir
tried to zip every entry, including non-regular files. Opening a FIFO
blocks forever (no writer); a unix socket / unreadable file raised an
OSError that aborted the whole archive. Now only real regular files are
zipped — FIFOs, sockets, devices and symlinks are skipped without ever
open()-ing them, and a per-file read error skips just that file instead
of failing the download.
2. No feedback while a large folder is being prepared. The zip is built
server-side before any bytes flow, so the click felt dead. The Files
page now shows an indeterminate "Preparing <name>…" bar from click,
switching to a real percentage during the transfer (Content-Length is
known for the finished zip). filesApi.download forwards onDownloadProgress.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
