Search the wrolpi-help markdown in-process: files are parsed on demand
and cached by mtime; title matches outrank headings outrank body. No
database table — the corpus is dozens of small files. Pages are read
as paged markdown. The docker api container gets a read-only bind
mount of the help docs at the native /opt/wrolpi-help location; a
missing help directory degrades to empty results with a message.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
