Ahoy says only host-delegated has a reviewer adapter; build routes lane reviews to RepoPrompt

Ahoy says only host-delegated has a reviewer adapter; build routes lane reviews to RepoPrompt

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

• End A: .abcd/development/brief/04-surfaces/01-ahoy.md:893 — "The oracle backend is not asked while host-delegated is the only answer with an adapter"
• End B: .abcd/development/brief/04-surfaces/34-build.md:542 — "A build lane's ruthless and security reviews can go to RepoPrompt over MCP instead of the host's own agents"

01-ahoy's install does not ask for the oracle backend, because host-delegated is the only answer with an adapter, and it says other reviewers arrive later. 34-build's reviewer route sends a lane's ruthless and security reviews to RepoPrompt over MCP through oracle.review. So either a second reviewer already has an adapter, which contradicts ahoy, or two different settings choose the reviewer and neither document says how they relate.

Evidence: .abcd/work/reviews/2026-10-26-consistency/00-summary.md, finding 286.