Velite for MDX compilation (bible, docs, blog, about collections), rehype plugins (rehypeSlug for heading IDs, rehypePrettyCode with Shiki), content collection system (slug indexing, number-prefix stripping, hierarchical tree building, prev/next navigation, reading time, word count), MDX components (Cite for inline references with locators, Term for glossary hover cards, Alert/Badge/Card/CardGrid/Collapsible/Steps/Tabs/Kbd/Mermaid), references system (ref builder pattern with URL/archived/DOI types, screenshot assets, Bibliography component), glossary system (term definitions with hover cards, Glossary component), ContentSearchIsland wrapper, nextSteps resolution from numbered paths to clean slugs.