The mental model gives ADR files the shape `adr-N-<slug>.md`; the decide chapter says an ADR's filename is its stamp followed by its slug.

The mental model gives ADR files the shape adr-N-<slug>.md; the decide chapter says an ADR's filename is its stamp followed by its slug.

A premise contradiction (severity nitpick) found by the cross-document consistency pass.

• End A: .abcd/development/brief/01-product/03-mental-model.md:74 — "routes capture to the existing ADR store (.abcd/development/decisions/adrs/, adr-N-<slug>.md)"
• End B: .abcd/development/brief/04-surfaces/24-decide.md:134 — "The filename is the stamp followed by the slug"

03-mental-model names the ADR store's files adr-N-<slug>.md. 24-decide describes the store's minting verb and says the filename is the stamp followed by the slug. It also says the ordinals 0001–0058 keep their filenames, so no ADR file carries an adr- prefix. A reader looking up an ADR by the mental model's pattern would find no file.

Evidence: .abcd/work/reviews/2026-10-26-consistency/00-summary.md, finding 66.