Triggers VS Code tab styling on the docs' YAML/config blocks
where surrounding prose names the file. Mechanical, ~1 edit
across the guides section (building-context.mdx); primary-sources.mdx
and context-sources.mdx already had title= on their Connection config
blocks, so only the prose-named semantic source output example needed
updating.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Activates fumadocs' built-in collapse on every section. Only the
section containing the current page expands; others stay collapsed
until the user clicks them. Foundation for the typographic sidebar
pass in the next commit.