openai/gpt-chat-latest → B (50:1)

Side B fixes a real correctness bug by moving the zero-ratio guard before `ensure_item` and `voted_pairs.insert`, preventing ghost items and incorrectly recorded voted pairs. It also updates the test to verify that no items, edges, or voted pairs are registered for zero-weight votes, whereas Side A only adds a new file containing the single line `open webui` without implementing project functionality.