openai/gpt-chat-latest → A (4:1)

Side A performs a substantial architectural refactor by moving path canonicalization and URL construction into a shared `types::paths` module, replacing ad hoc string helpers with strongly typed `GardenItemUrl`, `ForumThreadUrl`, and `TildeOntologyPath` throughout the API and shared types. This centralizes path identity, reduces duplication, and makes JSON/RPC interfaces more type-safe, while preserving behavior via migrated tests; Side B adds useful SSE-based Reddit fetch streaming and UI updates, but it is a more localized feature with additional dependencies rather than a cross-cutting improvement to core project design.