Andrey Epifancev 27a1f22be4 Stream uploaded attachments to disk and cover the progress callback
UploadedFile already holds the whole attachment in memory; getvalue()
made a second full copy of each of the 230 files before writing. Copy
through the file interface instead. Smoke tests pin the progress
callback contract: once per XML file, including unreadable ones.

Refs #1

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
2026-10-09 19:14:43 +04:00
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