openai/gpt-5.2-chat → A (9:1)

Side A introduces substantial architectural changes: migrating from Deque to List in storage, altering recent vote capping semantics (write-time to read-time), updating schema version, modifying reducer logic, removing trimming logic, and adding a new test. This impacts persistence, in-memory state, and query behavior. Side B is a minor HTML form attribute cleanup with negligible functional impact.