~x-ai/grok-latest → A (3:2)

A adds lasting product and parser design: typed/deterministic BlockMasker, a real prose item-ref tokenizer (URLs/~/− refs, fence-aware, punctuation/newline handling), braced body rules, and garden linkify wired to that tokenizer with focused tests. B’s composable url_rules + full-URL ItemId is also foundational, but a large share of the diff is cascading test/id string rewrites and migration noise rather than net new behavior.