~anthropic/claude-sonnet-latest → B (3:1)

Side A merely deletes a speculative design doc, removing no functional code and providing no lasting value beyond repo tidiness. Side B consolidates real code by merging room_route.rs into paths.rs and moving url_identity_tests.rs into url_normalize.rs, reducing module fragmentation while preserving all functionality and tests intact, which is a genuine (if modest) structural improvement.