A markdown document's frontmatter title now reaches the PDF
Setting `title:` in a markdown file's YAML frontmatter did not change the PDF's title; viewers showed "Document" instead. The frontmatter title is now written to the PDF, through the API, the CLI and the MCP render_markdown tool.
If you set the title in your markdown's frontmatter and sent no title option, the PDF came back titled "Document". PDF viewers show that title in the window and tab bar, and screen readers announce it, so the document looked untitled.
The frontmatter title is now used, as documented. A title in the request options still takes precedence over the frontmatter, and a document with neither is still titled "Document".
This affected POST /api/v1/md, POST /api/v1/markdown, makespdf md and the MCP render_markdown tool. Render the document again to get the corrected title.