feat: 로또 백테스트 탭 UI 폴리시 (1·2등 컬럼·빈 상태·차트 박스 CSS)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/pages/lotto/Evolver.css

@@ -58,6 +58,9 @@
 .winner-card .winner-meta strong { color: #f1f5f9; font-weight: 600; }
 .winner-card .winner-chart { background: rgba(0,0,0,0.15); border-radius: 8px; padding: 8px; }
 
+/* Backtest — WinnerAnalysisCard chart wrapper (standalone, not inside .winner-card) */
+.backtest-winner-chart { background: rgba(0,0,0,0.15); border-radius: 8px; padding: 8px; }
+
 /* TrialsGrid */
 .trials-grid .grid {
     display: grid; grid-template-columns: repeat(6, 1fr);

src/pages/lotto/evolver/TrackRecordCard.jsx

@@ -7,17 +7,22 @@ export default function TrackRecordCard({ byStrategy }) {
     if (!byStrategy) return null;
 
     const rows = STRATEGY_ORDER.filter((s) => byStrategy[s]);
-    if (rows.length === 0) return null;
 
     return (
         <div className="evolver-card backtest-track-record">
             <h2>누적 성적표</h2>
+            {rows.length === 0 ? (
+                <p className="backtest-note">아직 백테스트 데이터가 없습니다.</p>
+            ) : (
+                <>
                     <table className="backtest-table">
                         <thead>
                             <tr>
                                 <th>전략</th>
                                 <th>누적 장수</th>
                                 <th>회차수</th>
+                                <th>1등</th>
+                                <th>2등</th>
                                 <th>3등</th>
                                 <th>4등</th>
                                 <th>5등</th>
@@ -31,6 +36,8 @@ export default function TrackRecordCard({ byStrategy }) {
                                         <td>{STRATEGY_LABEL[s] || s}</td>
                                         <td>{(a.n_tickets || 0).toLocaleString()}</td>
                                         <td>{a.draws || 0}</td>
+                                        <td>{a['1st'] || 0}</td>
+                                        <td>{a['2nd'] || 0}</td>
                                         <td>{a['3rd'] || 0}</td>
                                         <td>{a['4th'] || 0}</td>
                                         <td>{a['5th'] || 0}</td>
@@ -42,6 +49,8 @@ export default function TrackRecordCard({ byStrategy }) {
                     <p className="backtest-note">
                         엔진이 무작위를 넘지 못하면 분석에 통계적 우위가 없다는 정직한 증거입니다.
                     </p>
+                </>
+            )}
         </div>
     );
 }

src/pages/lotto/evolver/WinnerAnalysisCard.jsx

@@ -25,7 +25,7 @@ export default function WinnerAnalysisCard({ analysis }) {
                 이번 당첨조합 분석치
                 <span className="badge">무작위 상위 {pct}</span>
             </h2>
-            <div className="winner-chart">
+            <div className="backtest-winner-chart">
                 <ResponsiveContainer width="100%" height={240}>
                     <RadarChart data={data}>
                         <PolarGrid stroke="rgba(255,255,255,0.12)" />