openai/gpt-chat-latest → A (4:3)

Side A introduces a durable URL identity and canonicalization subsystem (`url_rules` with composable normalization, breadcrumb/parent logic, `ItemId` integration, replay parsing, and widespread migration to canonical `https://` IDs), improving how entities are identified and stored across the project. Side B makes meaningful architectural improvements by removing demo-only code and adding a settlement worker plus cached ranking computation, but its main impact is performance and cleanup, whereas Side A establishes a broader foundational data model that affects persistence, replay, parsing, and navigation.