The report chapter says the sources store is keyed by the full root-commit SHA; the library chapter names a repository's sources ledger by the first twelve hex digits of its root commit.

The report chapter says the sources store is keyed by the full root-commit SHA; the library chapter names a repository's sources ledger by the first twelve hex digits of its root commit.

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

• End A: .abcd/development/brief/04-surfaces/07-library.md:109 — "A repository's ledger is named by the first twelve hex digits of its root commit"
• End B: .abcd/development/brief/04-surfaces/29-report.md:95 — "The inbox is a machine-scoped store beside the history, transcript, worktree, sources, labs and run stores. The sender key is the reporting repository's full root-commit SHA, the key those stores use"

29-report lists the sources store among the machine-scoped stores and says the full root-commit SHA is 'the key those stores use'. 07-library says a repository's ledger in the sources corpus is named by the first twelve hex digits of its root commit. The two pages cannot both describe the sources store's key correctly.

Evidence: .abcd/work/reviews/2026-10-26-consistency/00-summary.md, finding 415.