It was textContent, so formatting appeared literally. It now renders inline
Markdown only — bold, italic, code, links, breaks — because this text is
injected into every page and must not be able to introduce headings, images
or block layout that shifts the app around.
parseInline rather than parse, a tag allow-list, event-handler and style
attributes forbidden, data attributes off, and one innerHTML assignment that
can only be reached through DOMPurify. Missing either library, or any failure
while rendering, falls back to the literal text rather than to unsanitised
markup.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Dv6sqaY6Vq3ChZHMem3cnU
e2444066a0