Canonical build entrypoint for rllmdoc. Resolves the project once, runs any required pre-build steps once, then generates both files.
Value
Invisibly returns a named list with llms_txt and llms_full_txt
paths plus the mirrored _llms directory path.
Details
This is the public build step for a correctly configured project. It does
not perform project setup. It ensures the native companion markdown exists
when needed, replaces any native llms.txt in the site output with the
final curated, spec-valid llms.txt and llms-full.txt, and mirrors the
llms-only output into a root-level _llms/ directory for local agent
consumption.