- goLang follows the highlighter's chroma lookup, so golang and main.go need src=
- a src= fence in a module README is refused and never captioned
- shell fences inside callouts and lists are command-checked
- a fence with four or more leading spaces is an indented code block
- WinterCMS-style shell: header with search and theme toggle, grouped
sidebar, on-page TOC, pager, page actions, callouts, heading
permalinks, footer and a 404 page
- fenced code highlighted at build time by chroma/v2 into tok-* classes,
with a copy button; no inline script, style or handler
- vendored DM Sans/DM Mono fonts and Lucide icons with their licences
- client-side search over search-index.json built with textContent only
- summer docs:serve builds into a temp dir, serves on loopback by default,
returns 404.html with status 404 and rebuilds on change
