openai/gpt-chat-latest → A (50:1)

Side A fundamentally restructures the project around hierarchical ItemId-based nodes and a GlobalTree, replacing flat scope-based rankings, adds canonical Reddit URL parsing, breadcrumb navigation, node persistence, and a journaled vote pipeline, with corresponding tests and UI updates. Side B only appends a single planning note ('have index be sorted by viewcount') to a seed ideas file and does not change application behavior.