Head-to-Head · 상대 전적

DetailShell ("상대 전적") over a SummaryCard + CalloutCards + a "주요 상대" FeedList. States gate strictly in order: error → JUST a QueryErrorState (nothing else); loading → 2 SkeletonCards; no data OR zero records → ONE unified EmptyState (the code never distinguishes "no opponents" from "no matches"); else the full analysis. Win-rate everywhere is wins / (wins + losses) — draws are excluded from the denominator.