ReactMarkdown was running with no plugins, so README headers full of
raw <div align=center>, tables, <details>/<summary>, and other GFM
markup rendered as escaped text. Wire in remark-gfm for tables and
GFM features, rehype-raw for embedded HTML, and rehype-sanitize with
an extended schema that permits README-typical tags and attributes
(align, target, width/height, picture/source, etc.) while still
blocking script/iframe/object — READMEs come from external repos so
they need adversarial-input handling.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
rob thijssen
8a7177a54a
