- relative links and anchors resolve against the renderer's heading IDs
- summer and ./bin/<app> command names come from the real command
constructors through docsite.Options.Commands; a nil set is a problem
- consuming-application names fail in page sources and built outputs
- go fences in docs/ pages need src=, callouts are NOTE, TIP or WARNING,
docs/ headings are plain ASCII
- gate gains --claude and self-test plants for each new rule
