Jianshu's HTML editor strips uploaded <img> tags during save, so previously
uploaded images vanished from the rendered article. After image upload,
convert each <img> (and surrounding <p> wrappers) to a markdown image block
in both the desktop and extension publish paths so the references survive.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
