## Problem The glossary system only works with `.mdx` files, but most of our docs are `.md` files. Currently: 22 `.mdx` files can use glossary tooltips Goal: ~400 `.md` files converted to `.mdx` for full glossary coverage ## Tasks - [ ] Convert `.md` → `.mdx` files - [ ] Update internal links and references - [ ] Test that everything still builds and works ## Related Depends on (https://github.com/ClickHouse/clickhouse-docs/pull/4164) (Glossary System)