优化缓存命中
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@@ -61,22 +61,12 @@ router.post('/:roomId/messages', authMiddleware, async (req, res) => {
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});
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async function analyzeWithDeepSeek(text, historyMessages, username, isAdmin, roomId) {
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// 采购清单(单独消息)
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var purchases = db.prepare("SELECT item, quantity, amount, status, created_at FROM purchases WHERE room_id = ? ORDER BY created_at DESC LIMIT 10").all(roomId);
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var purchaseMsg = purchases.length
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? '📋 当前房间采购清单(最近10条):\n' + purchases.map(function(p) { return '- ' + p.item + ' | ×' + p.quantity + ' | ¥' + p.amount + ' | ' + p.status + ' | ' + p.created_at; }).join('\n')
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: '';
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// 系统提示词(稳定,不含时间)
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var systemPrompt = buildSystemPrompt(username, isAdmin);
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var messages = [
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{ role: 'system', content: systemPrompt }
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];
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// 全量历史,每 30 条一轮前缀稳定期,轮内全部命中
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historyMessages.forEach(function(m) { messages.push(m); });
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// 采购清单、时间放最后,变动不影响历史命中
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if (purchaseMsg) messages.push({ role: 'system', content: purchaseMsg });
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messages.push({ role: 'system', content: '当前服务器时间:' + new Date().toLocaleString('zh-CN', { timeZone: 'Asia/Shanghai', hour12: false }) });
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// 当前消息已在 historyMessages 中,不再重复 push
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const content = await callDeepSeek(messages, username);
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console.log('🤖 AI 返回:', content.substring(0, 200));
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// 打印消息结构,方便排查缓存
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