~anthropic/claude-sonnet-latest → B (6:4)

Side B performs a substantive, consistent refactor centralizing path/URL logic into a shared slug-types crate with new correct-by-construction newtypes (GardenItemUrl, ForumThreadUrl, TildeOntologyPath), reducing duplication and improving type safety across API responses, with tests migrated intact. Side A adds a real feature (typed form holes, vote redirect, vote page wiring) but bundles unrelated Cargo.lock dependency churn and CSS/JS additions with less architectural cohesion, making its net value more mixed.