~anthropic/claude-sonnet-latest → B (7:3)

Side B fixes a real attribution bug (delegate leaking into DSL text), removes a broken fallback that silently used unrelated items, cleans up dead UI code, and renames a route across the whole codebase with matching test updates — a broader, functionally meaningful change. Side A is a small correctness/dead-code cleanup in the reducer with a decent test update, but it's narrower in scope and impact.