A site built to be read by machines and reviewers alike

Most prose on a real site does not sit at the top level of a content document — it sits inside an item that already exists, one or two fields deep. A build pipeline that only proves in-place edits at the top level has not proven the shape most edits actually take.

This page carries its prose the same way: a fixed set of sections, each holding a heading and a short run of paragraphs. Editing any sentence here is the same operation as editing one on a real site, at the same nesting depth.

The list of sections itself is fixed for this fixture — adding a fourth section is a deliberate structural change, not something the substitution lane is asked to do. What varies at serve time is the wording inside a section, never the count of sections.

That boundary is the point: a collection and an array of paragraphs look identical in JSON. The difference is which axis is allowed to move without a rebuild, and this fixture draws that line on purpose rather than leaving it to be inferred.

A diff that only touches string values inside `sections` should be servable without a rebuild. A diff that adds, removes, or reorders a section, or that touches an `id`, changes structure and should require one.

If a reviewer cannot tell which kind of diff they are looking at from the file alone, the content contract has failed at its one job on this page.