feat: conversation long-term memory + fix source ENUM bug

- New: conversationSummarizer.js (LLM summary every 3 turns, loadBestSummary, persistFinalSummary)
- db/index.js: conversation_summaries table, upsertConversationSummary, getSessionSummary
- redisClient.js: setSummary/getSummary (TTL 2h)
- nativeVoiceGateway.js: _turnCount tracking, trigger summarize, persist on close
- realtimeDialogRouting.js: inject summary context, reduce history 5->3 rounds
- Fix: messages source ENUM missing 'search_knowledge' causing chat DB writes to fail

test2/server/services/nativeVoiceGateway.js

@@ -27,21 +27,27 @@ const {
 const ToolExecutor = require('./toolExecutor');
 const {
   DEFAULT_VOICE_ASSISTANT_PROFILE,
+  DEFAULT_CONSULTANT_CONTACT,
   resolveAssistantProfile,
+  getAssistantDisplayName,
   buildVoiceSystemRole,
   buildVoiceGreeting,
 } = require('./assistantProfileConfig');
 const { getAssistantProfile } = require('./assistantProfileService');
 const redisClient = require('./redisClient');
+const { checkProductLinkTrigger } = require('./productLinkTrigger');
+const { triggerSummarizeIfNeeded, persistFinalSummary } = require('./conversationSummarizer');
 
 const sessions = new Map();
 
+const CONSULTANT_REFERRAL_PATTERN = /咨询(?:专业|你的)?顾问|健康管理顾问|联系顾问|一对一指导|咨询专业|咨询医生|咨询营养师|咨询专业人士|建议.*咨询|问问医生|问问.*营养师/;
+
 const IDLE_TIMEOUT_MS = 5 * 60 * 1000;
 const AUDIO_KEEPALIVE_INTERVAL_MS = 20 * 1000;
 // 3200 bytes ≈ 66ms of silence at 24kHz s16le mono (larger frame to ensure S2S acceptance)
 const SILENT_AUDIO_FRAME = Buffer.alloc(3200, 0);
 
-const DEFAULT_VOICE_BOT_NAME = DEFAULT_VOICE_ASSISTANT_PROFILE.nickname;
+const DEFAULT_VOICE_BOT_NAME = getAssistantDisplayName(DEFAULT_VOICE_ASSISTANT_PROFILE);
 
 const DEFAULT_VOICE_SYSTEM_ROLE = buildVoiceSystemRole();
 
@@ -187,6 +193,7 @@ function persistUserSpeech(session, text) {
   session.lastPersistedUserAt = now;
   session.latestUserText = cleanText;
   session.latestUserTurnSeq = (session.latestUserTurnSeq || 0) + 1;
+  session._turnCount = (session._turnCount || 0) + 1;
   resetIdleTimer(session);
   db.addMessage(session.sessionId, 'user', cleanText, 'voice_asr').catch((e) => console.warn('[NativeVoice][DB] add user failed:', e.message));
   redisClient.pushMessage(session.sessionId, { role: 'user', content: cleanText, source: 'voice_asr' }).catch(() => {});
@@ -223,6 +230,24 @@ function persistAssistantSpeech(session, text, { source = 'voice_bot', toolName
     toolName,
     sequence: `native_assistant_${now}`,
   });
+  // 异步触发摘要检查（每N轮）
+  if (persistToDb) {
+    triggerSummarizeIfNeeded(session, session.sessionId);
+  }
+  if (CONSULTANT_REFERRAL_PATTERN.test(cleanText)) {
+    const contact = session.consultantContact || DEFAULT_CONSULTANT_CONTACT;
+    if (contact.mobile || contact.wx_qr_code || contact.wechat_id) {
+      console.log(`[NativeVoice] consultant referral detected session=${session.sessionId} text=${JSON.stringify(cleanText.slice(0, 80))}`);
+      sendJson(session.client, {
+        type: 'consultant_contact',
+        name: contact.name || '大沃专业健康管理顾问',
+        mobile: contact.mobile || '',
+        wx_qr_code: contact.wx_qr_code || '',
+        wechat_id: contact.wechat_id || '',
+        message: '如需个性化健康建议，可联系大沃专业健康管理顾问',
+      });
+    }
+  }
   return true;
 }
 
@@ -250,6 +275,7 @@ function flushAssistantStream(session, { source = 'voice_bot', toolName = null,
   return persistAssistantSpeech(session, fullText, { source, toolName, meta });
 }
 
+
 async function loadHandoffSummaryForVoice(session) {
   try {
     const history = await db.getHistoryForLLM(session.sessionId, 10);
@@ -404,6 +430,7 @@ function clearUpstreamSuppression(session) {
   session.pendingAssistantSource = null;
   session.pendingAssistantToolName = null;
   session.pendingAssistantMeta = null;
+  session._pendingEvidencePack = null;
   session.pendingAssistantTurnSeq = 0;
   session.blockUpstreamAudio = false;
   sendJson(session.client, { type: 'assistant_pending', active: false });
@@ -487,7 +514,18 @@ async function processReply(session, text, turnSeq = session.latestUserTurnSeq |
     if (!resolveResult) {
       resolveResult = await resolveReply(session.sessionId, session, cleanText);
     }
-    const { delivery, speechText, ragItems, source, toolName, routeDecision, responseMeta } = resolveResult;
+    const { delivery, speechText, ragItems, source, toolName, routeDecision, responseMeta, evidencePack } = resolveResult;
+    // 产品链接触发检测：用户请求查看产品详情时推送对应链接
+    const productLinkResult = checkProductLinkTrigger(cleanText);
+    if (productLinkResult.triggered && productLinkResult.product) {
+      console.log(`[NativeVoice] product link triggered session=${session.sessionId} product=${productLinkResult.product.name}`);
+      sendJson(session.client, {
+        type: 'product_link',
+        product: productLinkResult.product.name,
+        link: productLinkResult.product.link,
+        description: productLinkResult.product.description,
+      });
+    }
     if (activeTurnSeq !== (session.latestUserTurnSeq || 0)) {
       console.log(`[NativeVoice] stale reply ignored session=${session.sessionId} activeTurn=${activeTurnSeq} latestTurn=${session.latestUserTurnSeq || 0}`);
       clearUpstreamSuppression(session);
@@ -501,6 +539,7 @@ async function processReply(session, text, turnSeq = session.latestUserTurnSeq |
       }
       session.blockUpstreamAudio = false;
       session._lastPartialAt = 0;
+      session._pendingEvidencePack = null;
       session.awaitingUpstreamReply = true;
       session.pendingAssistantSource = 'voice_bot';
       session.pendingAssistantToolName = null;
@@ -515,7 +554,7 @@ async function processReply(session, text, turnSeq = session.latestUserTurnSeq |
       }
       session.discardNextAssistantResponse = true;
       sendJson(session.client, { type: 'tts_reset', reason: 'knowledge_hit' });
-      const ragContent = (ragItems || []).filter((item) => item && item.content);
+      const ragContent = (ragItems || []).filter((item) => item && item.content && item.kind !== 'context');
       if (ragContent.length > 0) {
         console.log(`[NativeVoice] processReply sending external_rag to S2S session=${session.sessionId} route=${routeDecision?.route || 'unknown'} items=${ragContent.length}`);
         // KB话题记忆：记录本轮用户原始问题和时间戳，用于保护窗口和追问enrichment
@@ -523,6 +562,7 @@ async function processReply(session, text, turnSeq = session.latestUserTurnSeq |
           session._lastKbTopic = cleanText;
           session._lastKbHitAt = Date.now();
         }
+        session._pendingEvidencePack = evidencePack || null;
         // 不提前发KB原文作字幕：等S2S event 351返回实际语音文本后再更新字幕
         // 这样字幕和语音保持一致（S2S会基于RAG内容生成自然口语化的回答）
         session._pendingExternalRagReply = true;
@@ -708,6 +748,7 @@ function handleUpstreamMessage(session, data) {
       session.pendingAssistantSource = null;
       session.pendingAssistantToolName = null;
       session.pendingAssistantMeta = null;
+      session._pendingEvidencePack = null;
       console.log(`[NativeVoice] duplicate assistant final ignored (351) session=${session.sessionId} turn=${pendingAssistantTurnSeq}`);
       return;
     }
@@ -725,30 +766,17 @@ function handleUpstreamMessage(session, data) {
       if (session._pendingExternalRagReply) {
         session._pendingExternalRagReply = false;
       }
-      // 品牌安全检测：最终助手文本包含有害内容时，阻断音频并注入安全回复
-      if (isBrandHarmful(assistantText)) {
-        console.warn(`[NativeVoice][SafeGuard] harmful content in final assistant text, blocking session=${session.sessionId} text=${JSON.stringify(assistantText.slice(0, 120))}`);
+      console.log(`[NativeVoice] upstream assistant session=${session.sessionId} text=${JSON.stringify(assistantText.slice(0, 120))}`);
+      session.lastDeliveredAssistantTurnSeq = pendingAssistantTurnSeq;
+      persistAssistantSpeech(session, assistantText, {
+        source: pendingAssistantSource,
+        toolName: pendingAssistantToolName,
+        meta: pendingAssistantMeta,
+      });
+      // KB回复完成后重新阻断音频，防止下一个问题的S2S默认回复在early block前泄露
+      if (session.currentTtsType === 'external_rag') {
         session.blockUpstreamAudio = true;
-        sendJson(session.client, { type: 'tts_reset', reason: 'harmful_blocked' });
-        const safeReply = getVoiceSafeReply();
-        session.lastDeliveredAssistantTurnSeq = pendingAssistantTurnSeq;
-        persistAssistantSpeech(session, safeReply, { source: 'voice_bot' });
-        sendSpeechText(session, safeReply).catch((err) => {
-          console.warn('[NativeVoice][SafeGuard] sendSpeechText failed:', err.message);
-        });
-      } else {
-        console.log(`[NativeVoice] upstream assistant session=${session.sessionId} text=${JSON.stringify(assistantText.slice(0, 120))}`);
-        session.lastDeliveredAssistantTurnSeq = pendingAssistantTurnSeq;
-        persistAssistantSpeech(session, assistantText, {
-          source: pendingAssistantSource,
-          toolName: pendingAssistantToolName,
-          meta: pendingAssistantMeta,
-        });
-        // KB回复完成后重新阻断音频，防止下一个问题的S2S默认回复在early block前泄露
-        if (session.currentTtsType === 'external_rag') {
-          session.blockUpstreamAudio = true;
-          console.log(`[NativeVoice] re-blocked after KB response session=${session.sessionId}`);
-        }
+        console.log(`[NativeVoice] re-blocked after KB response session=${session.sessionId}`);
       }
     } else {
       const didFlush = flushAssistantStream(session, {
@@ -763,6 +791,7 @@ function handleUpstreamMessage(session, data) {
     session.pendingAssistantSource = null;
     session.pendingAssistantToolName = null;
     session.pendingAssistantMeta = null;
+    session._pendingEvidencePack = null;
     return;
   }
 
@@ -845,6 +874,7 @@ function handleUpstreamMessage(session, data) {
       session.pendingAssistantSource = null;
       session.pendingAssistantToolName = null;
       session.pendingAssistantMeta = null;
+      session._pendingEvidencePack = null;
       console.log(`[NativeVoice] duplicate assistant final ignored (559) session=${session.sessionId} turn=${pendingAssistantTurnSeq}`);
       return;
     }
@@ -862,6 +892,7 @@ function handleUpstreamMessage(session, data) {
     session.pendingAssistantSource = null;
     session.pendingAssistantToolName = null;
     session.pendingAssistantMeta = null;
+    session._pendingEvidencePack = null;
     return;
   }
 
@@ -1042,7 +1073,7 @@ function attachClientHandlers(session) {
         ...((parsed.assistantProfile && typeof parsed.assistantProfile === 'object') ? parsed.assistantProfile : {}),
       });
       session.assistantProfile = assistantProfile;
-      session.botName = parsed.botName || assistantProfile.nickname || DEFAULT_VOICE_BOT_NAME;
+      session.botName = parsed.botName || getAssistantDisplayName(assistantProfile) || DEFAULT_VOICE_BOT_NAME;
       session.systemRole = buildVoiceSystemRole(assistantProfile);
       session.speakingStyle = parsed.speakingStyle || session.speakingStyle || DEFAULT_VOICE_SPEAKING_STYLE;
       session.speaker = parsed.speaker || process.env.VOLC_S2S_SPEAKER_ID || 'zh_female_vv_jupiter_bigtts';
@@ -1089,6 +1120,10 @@ function attachClientHandlers(session) {
     if (session.upstream && session.upstream.readyState === WebSocket.OPEN) {
       session.upstream.close();
     }
+    // 会话结束时持久化摘要到 MySQL
+    persistFinalSummary(session).catch((err) => {
+      console.warn('[NativeVoice] persistFinalSummary failed:', err.message);
+    });
     sessions.delete(session.sessionId);
   });
 }
@@ -1164,6 +1199,7 @@ function createSession(client, sessionId) {
     _echoLogOnce: false,
     _fillerActive: false,
     _pendingExternalRagReply: false,
+    _pendingEvidencePack: null,
     _lastPartialAt: 0,
     pendingKbPrequery: null,
     _kbPrequeryText: '',
@@ -1171,7 +1207,7 @@ function createSession(client, sessionId) {
     _lastKbTopic: '',
     _lastKbHitAt: 0,
     assistantProfile,
-    botName: assistantProfile.nickname,
+    botName: getAssistantDisplayName(assistantProfile),
     systemRole: buildVoiceSystemRole(assistantProfile),
     speakingStyle: DEFAULT_VOICE_SPEAKING_STYLE,
     speaker: process.env.VOLC_S2S_SPEAKER_ID || 'zh_female_vv_jupiter_bigtts',
@@ -1201,6 +1237,7 @@ function createSession(client, sessionId) {
     _lastFinalNormalized: '',
     _lastFinalAt: 0,
     _audioKeepaliveTimer: null,
+    _turnCount: 0,
   };
   sessions.set(sessionId, session);
   attachClientHandlers(session);