v1.18.0

1.18.0 (2026-07-08)

A navigation discipline, dogfooded from this repo's own README the day it got its
Contents section: past roughly 10 KB or 8+ sections, a README gains a linked
## Contents after the intro and a back-to-contents link at the foot of every section.
The load-bearing half is the anchor rule — GitHub's slugger is non-obvious (& collapses
to --, a trailing … leaves a trailing -, backticks and dots vanish), so internal
links are validated mechanically (the canonical github-slugger package, or the
rendered page's own anchors), never hand-computed: a 404 anchor is a broken deliverable
that no CI gate catches, the same silent-staleness class as a wrong diagram. Guarded by
the new readme-toc-anchor-validation eval scenario (suite 45 → 46).

Features

• skill: linked Contents + back-links + mechanical anchor validation on long READMEs (#91) (aa1058b)