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

Side B fixes a real concurrency bug where a non-reentrant RwLock read guard was held across nested locking calls, which could deadlock the RPC handler, and adds a regression test plus test-harness reliability fixes (timeouts, avoiding pipe-buffer deadlocks) that improve project robustness. Side A also fixes a legitimate bug (duplicate `#entity-section` ids breaking multi-item morph targets) and reduces duplication in vote card rendering, but it's more localized UI plumbing versus B's server-correctness and test-infra fix.