~anthropic/claude-sonnet-latest → A (3:2)

Side A removes actual dead code in a code path (a redundant guard in apply_vote), verifies the correctness rationale, and updates a test to match real behavior with clear reasoning about invariants—this is a small, precise, functional cleanup. Side B is a large documentation-only rewrite that improves internal consistency of docs/plans but changes no code behavior and carries risk of documentation drift versus actual implementation; it's valuable but purely informational rather than a lasting code-level fix.