diff --git a/frontend/src/components/StockExplainView.jsx b/frontend/src/components/StockExplainView.jsx
index 68b067e..34e3243 100644
--- a/frontend/src/components/StockExplainView.jsx
+++ b/frontend/src/components/StockExplainView.jsx
@@ -153,6 +153,71 @@ function resolveEventCategory(event) {
   return 'signal';
 }
 
+function normalizeTradeRow(row, fallbackIndex = 0) {
+  if (!row || typeof row !== 'object') return null;
+  const timestamp = row.timestamp || row.ts || row.created_at || null;
+  const ticker = row.ticker || '';
+  const side = row.side || '';
+  const qtyValue = Number(row.qty ?? row.quantity ?? 0);
+  const priceValue = Number(row.price ?? 0);
+  return {
+    id: row.id || `trade-${ticker}-${timestamp || fallbackIndex}-${fallbackIndex}`,
+    timestamp,
+    trading_date: row.trading_date || row.trade_date || null,
+    ticker,
+    side,
+    qty: Number.isFinite(qtyValue) ? qtyValue : 0,
+    price: Number.isFinite(priceValue) ? priceValue : 0
+  };
+}
+
+function normalizeSignalRow(row, fallbackIndex = 0) {
+  if (!row || typeof row !== 'object') return null;
+  const timestamp = row.timestamp || row.created_at || null;
+  const date = row.date || row.trade_date || eventDateKey(timestamp) || '';
+  const rawSignal = row.signal || row.title || '';
+  const normalizedDirection = normalizeSignalDirection(rawSignal);
+  const confidenceValue = Number(row.confidence);
+  const realReturnValue = Number(row.real_return);
+  const parsedCorrect = typeof row.is_correct === 'string'
+    ? row.is_correct.toLowerCase() === 'true'
+      ? true
+      : row.is_correct.toLowerCase() === 'false'
+        ? false
+        : null
+    : typeof row.is_correct === 'boolean'
+      ? row.is_correct
+      : null;
+
+  return {
+    id: row.id || `signal-${row.agent_id || row.agentId || 'agent'}-${date || fallbackIndex}-${fallbackIndex}`,
+    timestamp,
+    date,
+    ticker: row.ticker || '',
+    signal: rawSignal,
+    confidence: Number.isFinite(confidenceValue) ? confidenceValue : null,
+    real_return: Number.isFinite(realReturnValue) ? realReturnValue : null,
+    is_correct: parsedCorrect,
+    agentId: row.agent_id || row.agentId || '',
+    agentName: row.agent_name || row.agentName || row.meta || '未知分析师',
+    role: row.role || row.meta || '',
+    normalizedDirection
+  };
+}
+
+function normalizeMentionRow(row, fallbackIndex = 0) {
+  if (!row || typeof row !== 'object') return null;
+  return {
+    id: row.id || `mention-${fallbackIndex}`,
+    feedId: row.id || `mention-${fallbackIndex}`,
+    timestamp: row.timestamp || null,
+    agent: row.agent || row.agentName || '未知角色',
+    content: row.body || row.content || '',
+    conferenceTitle: row.meta || '',
+    feedType: 'sqlite'
+  };
+}
+
 const EVENT_CATEGORY_META = {
   all: { label: '全部事件', color: '#111111' },
   discussion: { label: '讨论', color: '#555555' },
@@ -210,7 +275,7 @@ export default function StockExplainView({
     [holdings, selectedSymbol]
   );
 
-  const tickerTrades = useMemo(
+  const fallbackTrades = useMemo(
     () => trades
       .filter((trade) => trade.ticker === selectedSymbol)
       .sort((a, b) => new Date(b.timestamp).getTime() - new Date(a.timestamp).getTime()),
@@ -218,6 +283,12 @@ export default function StockExplainView({
   );
 
   const tickerSignals = useMemo(() => {
+    const snapshotSignals = Array.isArray(explainEventsSnapshot?.signals)
+      ? explainEventsSnapshot.signals.map((signal, index) => normalizeSignalRow(signal, index)).filter(Boolean)
+      : [];
+    if (snapshotSignals.length > 0) {
+      return snapshotSignals.sort((a, b) => new Date(b.timestamp || b.date).getTime() - new Date(a.timestamp || a.date).getTime());
+    }
     if (!selectedSymbol) return [];
     return (Array.isArray(leaderboard) ? leaderboard : []).flatMap((agent) => {
       const signals = Array.isArray(agent.signals) ? agent.signals : [];
@@ -231,7 +302,7 @@ export default function StockExplainView({
           normalizedDirection: normalizeSignalDirection(signal.signal)
         }));
     }).sort((a, b) => new Date(b.date).getTime() - new Date(a.date).getTime());
-  }, [leaderboard, selectedSymbol]);
+  }, [explainEventsSnapshot, leaderboard, selectedSymbol]);
 
   const signalSummary = useMemo(() => {
     const summary = { bullish: 0, bearish: 0, neutral: 0 };
@@ -241,7 +312,7 @@ export default function StockExplainView({
     return summary;
   }, [tickerSignals]);
 
-  const recentMentions = useMemo(() => {
+  const fallbackRecentMentions = useMemo(() => {
     const flattened = flattenFeedMessages(feed);
     return flattened
       .filter((message) => message.agent !== 'System' && includesTicker(message.content, selectedSymbol))
@@ -249,6 +320,29 @@ export default function StockExplainView({
       .slice(0, 8);
   }, [feed, selectedSymbol]);
 
+  const tickerTrades = useMemo(() => {
+    const snapshotTrades = Array.isArray(explainEventsSnapshot?.trades)
+      ? explainEventsSnapshot.trades.map((trade, index) => normalizeTradeRow(trade, index)).filter(Boolean)
+      : [];
+    if (snapshotTrades.length > 0) {
+      return snapshotTrades.sort((a, b) => new Date(b.timestamp).getTime() - new Date(a.timestamp).getTime());
+    }
+    return fallbackTrades;
+  }, [explainEventsSnapshot, fallbackTrades]);
+
+  const recentMentions = useMemo(() => {
+    const snapshotMentions = Array.isArray(explainEventsSnapshot?.events)
+      ? explainEventsSnapshot.events
+        .map((event, index) => normalizeMentionRow(event, index))
+        .filter(Boolean)
+        .slice(0, 8)
+      : [];
+    if (snapshotMentions.length > 0) {
+      return snapshotMentions.sort((a, b) => new Date(b.timestamp).getTime() - new Date(a.timestamp).getTime());
+    }
+    return fallbackRecentMentions;
+  }, [explainEventsSnapshot, fallbackRecentMentions]);
+
   const latestSignal = tickerSignals[0] || null;
   const priceColor = selectedTicker?.change > 0 ? '#00C853' : selectedTicker?.change < 0 ? '#FF1744' : '#000000';
   const exposureWeight = holding && Number.isFinite(Number(holding.weight)) ? Number(holding.weight) * 100 : null;
@@ -769,7 +863,7 @@ export default function StockExplainView({
                   </div>
                   <div style={{ height: 1, background: '#e0e0e0', margin: '4px 0' }} />
                   <div style={{ fontSize: 12, lineHeight: 1.7, color: '#666666' }}>
-                    这版解释以运行中的 agent 输出为主，不依赖外部新闻库或单股历史事件数据库。
+                    这版解释优先读取当前 run 的 SQLite 历史快照，拿不到时再回退到运行中的内存态事件。
                   </div>
                 </div>
               </div>
@@ -809,7 +903,7 @@ export default function StockExplainView({
                     : '暂无'}
                 </div>
                 <div style={{ marginTop: 8, fontSize: 11, color: '#666666' }}>
-                  {latestSignal ? `${latestSignal.agentName} · ${latestSignal.date}` : '还没有历史信号'}
+                  {latestSignal ? `${latestSignal.agentName} · ${latestSignal.date || eventDateKey(latestSignal.timestamp)}` : '还没有历史信号'}
                 </div>
               </div>
             </div>
@@ -846,8 +940,8 @@ export default function StockExplainView({
                           : '#666666';
 
                       return (
-                        <tr key={`${signal.agentId}-${signal.date}-${index}`}>
-                          <td>{signal.date}</td>
+                        <tr key={signal.id || `${signal.agentId}-${signal.date}-${index}`}>
+                          <td>{signal.date || eventDateKey(signal.timestamp) || '-'}</td>
                           <td>
                             <div style={{ fontWeight: 700 }}>{signal.agentName}</div>
                             <div style={{ fontSize: 10, color: '#666666' }}>{signal.role}</div>