Step 2 of strategy/01-git-excision.md: CommitMessageEngine and the composer seam relocate to a neutral module renamed away from commit vocabulary (ChangeNarrator, ChangeNarrationRequest, ChangeNarrating, SemanticChangeNarration, ChangeAuthorship), GitChangedPath extracts from GitCommitOperation as ChangedPath, and the one git tie severs — authorship's foreign case carries a display name, not a GitIdentity. The spec tests transplant as ChangeNarratorTests, alive until the journal work begins. 3,009 tests green.
Claude-Session: https://claude.ai/code/session_014PtZdPwqZuqEDLc6wZMtEy
