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

Side B introduces a well-structured, testable URL canonicalization graph (DFA traversal, generic fallback, builder with build-time validation) plus extensive matrix/edge-case tests, giving durable infrastructure for URL normalization. Side A is also solid (deterministic block tokens, prose ref tokenizer, stricter DSL body rules) but is more narrowly scoped and partly overlaps with fixing self-inflicted regressions (e.g., requiring braces around fenced bodies that previously worked without them), whereas B adds a genuinely new, reusable subsystem with strong safety guarantees (percent-encoding, tracking-param stripping).