feat(web): preview document attachments in the file viewer (#9292)

Co-authored-by: Julius Marminge <julius@mac.lan>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
7751299848Julius Marminge committed on 9/3/2026, 12:49:09 AM· committed by GitHubparentdbc7bfa
16 files changedLine totals unavailable