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

Side A performs a real data-model migration (Deque→List) with a schema version bump, correctly moves the cap logic to query time, and adds a dedicated test verifying capping/ordering behavior—demonstrating careful reasoning about durable storage semantics. Side B is a reasonable UX improvement (form morphing instead of redirects) but is smaller in scope, purely additive UI plumbing without tests, and lower architectural stakes than a storage schema change.