openai/gpt-chat-latest → A (3:2)

Side A delivers integrated parser and rendering improvements: it adds deterministic typed block masking, a prose item-reference tokenizer that correctly avoids code fences and trims URL punctuation, enforces braced DSL bodies, updates HTML linkification to support raw URLs/external references, and adjusts serialization accordingly, all backed by focused tests. Side B introduces a substantial URL canonicalization graph and parser framework with extensive tests, but it is largely new infrastructure whose lasting value depends on broader integration, whereas Side A directly fixes parsing correctness and user-visible behavior across existing code paths.