The three page-level buttons (Copy MD, View MD, Copy MDX) were broken
because the fetch URL missed the /ktx basePath. Replace with a single
"Copy as Markdown" button that strips frontmatter from the MDX source
already available client-side — no fetch needed. Drop the .md link
since agents discover markdown URLs through llms.txt and content
negotiation.
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>