- media upload policy now allows text/html, text/markdown, text/x-markdown,
text/csv (in addition to images/av, pdf, txt, zip, office docs)
- blob endpoint adds X-Content-Type-Options: nosniff, and forces
Content-Disposition: attachment for script-capable types (html, xhtml, svg,
xml) so an uploaded file can't render/execute inline from the IIOS origin
(stored-XSS). Images/video/audio/pdf still serve inline for preview.
- dev-opa test covering the allowed types + unknown/oversize denials
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
maaz519
b4104b9769