Posts on Conventions.

The highest-leverage navigation fix was a conditional on a frontmatter field

conventions.md ranked the N1 prerequisite chip as the single highest-value navigability fix before any phase of the learning-hub navigation plan shipped. After a scroll-spy TOC, hub track sections, and site-wide Pagefind search, the ranking holds. Reader-orientation at the chapter entry-point outperforms retrieval mechanics for an audience that doesn't know what it doesn't know.