~x-ai/grok-latest → A (5:1)

A delivers lasting product infrastructure: URL identity redesign (strip query/fragment by default, GitHub/YouTube canonicalization), a full on-demand GitHub resolver with SystemIngest, cooldowns, UI, and E2E coverage. B is a correct, focused fix (display_path in vote hrefs) plus a much stronger 45-pair ranking assertion, but its scope and durability are much narrower than A’s foundation and feature work.