The /api/media endpoint served all file types with Cache-Control:
private, max-age=3600. For HTML inline previews (rendered via
loadHtmlInline() → fetch() → iframe srcdoc), this meant the browser
cached the response for 1 hour. When an agent edited and re-rendered
the same HTML file, the inline preview showed stale content — only a
manual full-page refresh revealed the update.
Two changes:
- Backend: serve text/html with no-store instead of max-age=3600
(images and other media keep the 1-hour cache)
- Frontend: loadHtmlInline() fetch with {cache:'no-store'} for
belt-and-suspenders defense against intermediate caches
Note: the /api/file/raw path already used no-store for HTML; this
fixes the /api/media path which was missed.
happy5318
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