openai/gpt-5.2-chat → B (4:1)

Side A simply deletes a small HTML preview section (`vote-compare-preview-wrap`) from `garden.rs`, removing UI without adding structural improvement. Side B adds a substantial architectural plan (`plan.md`) and introduces a new `RouteContext` abstraction in `server/src/html/routing.rs`, re-exported in `html/mod.rs`, establishing a centralized routing layer for scoped href generation—an extensible design change with lasting impact.