~anthropic/claude-sonnet-latest → B (6:4)

Side B removes a fragile legacy-projection code path (dead branching, ambiguous fallback logic) in favor of a single well-defined Evidence-envelope source of truth, simplifying multiple endpoints and updating tests/schema fields consistently, which is a real architectural cleanup with lasting maintainability value. Side A is a focused feature/UI improvement (fullscreen vote-compare page, edge-history sorting/legend) that's useful but more localized and cosmetic, touching CSS/markup without addressing core data-model correctness.