'decision log' is the live shared-tier store in configuration, but in ahoy it is a legacy single file kept as frozen history

'decision log' is the live shared-tier store in configuration, but in ahoy it is a legacy single file kept as frozen history

A naming conflict (severity minor) found by the cross-document consistency pass.

• End A: .abcd/development/brief/05-internals/03-configuration.md:805 — "current orientation, the append-only decision log, the external-contribution runbook"
• End B: .abcd/development/brief/04-surfaces/01-ahoy.md:295 — "any single decisions log the repository already keeps left untouched as frozen history"

The configuration chapter's tier table says the shared work tier holds an append-only decision log. The ahoy chapter seeds a decisions folder with one file per decision, and treats any single decisions log as frozen history that is left untouched. One name points to two different things: the current decision store in one chapter and the retired legacy file in the other.

Evidence: .abcd/work/reviews/2026-10-26-consistency/00-summary.md, finding 293.