优化缓存命中

server/handlers.js

@@ -168,8 +168,8 @@ function handleAIResult(aiResult, roomId, username, originalText, attachments) {
   }
 
   if (aiResult.action === 'query') {
-    storeAndBroadcastText(roomId, '小财', '🔍 正在查询采购数据，请稍候...');
+    broadcastToRoom(roomId, { type: 'query_pending', text: '🔍 正在查询采购数据，请稍候...' });
-    const purchaseData = db.prepare('SELECT item, amount, payment_method, status FROM purchases WHERE room_id = ? ORDER BY created_at DESC').all(roomId).map(p => p.item + ' ' + p.amount + ' ' + (p.payment_method||'') + ' ' + p.status).join('\n');
+    const purchaseData = db.prepare('SELECT item, amount, payment_method, status, created_at FROM purchases WHERE room_id = ? ORDER BY created_at DESC').all(roomId).map(p => p.created_at + ' ' + p.item + ' ￥' + p.amount + ' ' + (p.payment_method||'') + ' ' + p.status).join('\n');
     const summaryPrompt = '根据以下采购记录，用自然语言回答用户查询"' + originalText + '"。采购记录：\n' + (purchaseData || '暂无记录');
     callDeepSeekForSummary(summaryPrompt, username).then(reply => { storeAndBroadcastText(roomId, '小财', reply); addToHistory(roomId, 'assistant', reply); });
     return;

server/public/js/chat.js

@@ -170,6 +170,15 @@ function clearTempBubble() {
   tempEls.forEach(function(el) { el.remove(); });
 }
 
+function showTempBubble(text) {
+  clearTempBubble();
+  var tempId = 'temp_' + Date.now();
+  var tempMsg = { id: tempId, user: '小财', text: text, attachments: [], timestamp: '', isTemp: true };
+  Store.messageCache.push(tempMsg);
+  messagesContainer.insertAdjacentHTML('beforeend', renderMessageHTML(tempMsg));
+  scrollToBottom();
+}
+
 // 双指缩放 + 拖拽
 function initPinchZoom(img) {
   var scale = 1, startDist = 0, startScale = 1;

server/public/js/ws.js

@@ -19,6 +19,8 @@ function initWebSocket() {
         const room = Store.rooms.find(r => r.id === data.room_preview.room_id);
         if (room) { room.last_message = data.room_preview.last_message; room.last_time = data.room_preview.last_time; renderChatList(); }
       }
+    } else if (data.type === 'query_pending') {
+      if (Store.currentRoom === roomId) showTempBubble(data.text);
     } else if (data.type === 'purchase_updated') {
       if (Store.currentRoom) loadPurchases();
       updateSummaryPreview();