openai/gpt-chat-latest → A (4:3)

Side A performs a substantial architectural refactor by moving canonicalization, path identity, and room-aware URL generation into shared `slug_types::paths` newtypes (`GardenItemUrl`, `ForumThreadUrl`, `TildeOntologyPath`) and updating API/RPC types to use those abstractions instead of ad hoc string helpers. Side B is a valuable correctness fix that consistently enforces vote ratio bounds (both sides 1–100) across the parser, UI, reducer, and tests, but its scope is a targeted validation improvement rather than a foundational API and type-system redesign.