openai/gpt-chat-latest → A (3:2)

Side A closes a correctness gap by enforcing vote ratio constraints consistently across the DSL parser, browser POST handler, and reducer, preventing invalid zero-sided votes and oversized ratios while adding targeted unit and integration regression tests. Side B fixes Reddit child import attachment and improves unranked labels by importing children under the intended parent and passing tree context into the ranking panel, but its impact is narrower to the Reddit import/UI path compared with A's project-wide data validation and invariant enforcement.