Folder layout

Models, content, blocks, and the catch-all route.

The first document used a model, a content file, and a route. Those folders are the registry. Adding a file is enough. Nothing else has to be imported by hand.

The tree

backmatter.config.ts
models/blog.ts
content/blog/hello.mdx
blocks/Hero.tsx
layouts/blog.tsx
app/[...backmatter]/page.tsx
.backmatter/

Path	Role
`backmatter.config.ts`	Workspace and API settings. Models are not listed here.
`models/{type}.ts`	`export default defineModel(...)`. The file name is `model.type`.
`content/{type}/{slug}.mdx`	One document.
`blocks/{Name}.tsx`	A React component used as an MDX tag. The file name is the tag.
`layouts/{type}.tsx`	Optional wrapper for every document of that type.
`sources/{type}.ts`	`export default defineSource(...)` for a model with `external: true`. Loads the outside record (a catalog product) that blocks receive as `props.data`. See External sources.
`app/[...backmatter]/page.tsx`	One route that mounts every model.
`.backmatter/`	Generated client. Gitignored. Import it as `backmatter`.

route on the model is the public URL. route: "/blog/{slug}" serves content/blog/hello.mdx at /blog/hello.

Content is what happens after the file exists: the published copy, the working copy an editor changes, and the commit publish writes back to git.