itd-146 says the ahoy-installed marker block tells every managed repository to run `abcd rules`; the ahoy chapter says a default install writes that block into no conventions file

itd-146 says the ahoy-installed marker block tells every managed repository to run abcd rules; the ahoy chapter says a default install writes that block into no conventions file

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

• End A: .abcd/development/brief/04-surfaces/01-ahoy.md:1071 — "install writes it into none of the repository's committed conventions files"
• End B: .abcd/development/intents/shipped/itd-146-abcd-s-help-renders-in-labelled-command.md:77 — "--help contradict the ahoy-installed marker block, which tells every"

itd-146 keeps rules visible in help because hiding it would contradict the ahoy-installed marker block, which it says tells every managed repository to run abcd rules. The ahoy chapter says the docs target defaults to skip, so a default install writes the block into none of the repository's committed conventions files, and only a project that names agents_md gets it. The block does not reach every managed repository, so the reason itd-146 gives rests on a premise the chapter denies.

Evidence: .abcd/work/reviews/2026-10-26-consistency/00-summary.md, finding 375.

Grounds

• declined: Closed in the 2026-10-27 triage (dcn-2610271112330536): a later record already settles which end holds. The premise was true when the intent was written and the later resolved issue records the change; only an incidental rationale in a shipped intent is stale.