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

A is a clean internal refactor (GroupState -> ScopeVotes) that removes cached edge state in favor of deriving it on demand, improving simplicity but is mostly mechanical renaming/restructuring of existing logic. B introduces a new, well-tested semantic URL graph (DFA traversal, builder with validation, generic fallback, extensive equivalence-class and regression tests) that adds real, durable functionality for canonicalizing and breadcrumbing URLs across reddit/youtube/generic sites, representing more net new capability with strong test coverage.