openai/gpt-chat-latest → B (4:1)

Side B removes the application's legacy GitDiscovery projection path and makes evidence envelopes the only supported source across epoch, commit, and patch views, simplifying the data model and eliminating fallback code. It also tightens the Emission schema by requiring evidence-related fields and updates tests accordingly, whereas Side A mainly changes recent-vote storage from a deque to an append-only list with query-time capping and removes trimming logic, a more localized internal refactor despite adding a useful regression test.