feat: 添加语音 AI 主动问候功能，优化问候文本发送逻辑和音频处理参数

src/pages/VoiceAssistant.jsx

@@ -139,17 +139,20 @@ export default function VoiceAssistant() {
   const voiceStateRef = useRef(state);
   voiceStateRef.current = state;
   const pendingGreetingRef = useRef(false); // 连接成功后待发送的问候
+  const pendingGreetingTextRef = useRef(''); // 待发送的自定义问候文本（admin 测试）
   const greetingSentRef = useRef(false);    // 问候已发出，等回复完成启动倒计时
   const greetingTimerRef = useRef(null);    // 等待回答的倒计时句柄
 
   // 主动发送问候（sendUserText → 后端 LLM 生成 → TTS 语音播放）
-  const sendGreeting = useCallback(() => {
+  const sendGreeting = useCallback((text) => {
     const c = clientRef.current;
     if (!c) return;
     pendingGreetingRef.current = false;
+    pendingGreetingTextRef.current = '';
     greetingSentRef.current = true;
-    c.sendUserText(GREETING_TEXT);
-    console.warn('[vision] 自动问候已发送:', GREETING_TEXT);
+    const msg = (text && String(text).trim()) || GREETING_TEXT;
+    c.sendUserText(msg);
+    console.warn('[vision] 主动问候已发送:', msg);
   }, []);
 
   // ── 右下角气泡渲染（复刻原版 ui/chat.js）───────────────────────────────
@@ -336,7 +339,14 @@ export default function VoiceAssistant() {
           console.warn('[vision] 用户已回答，取消挂断倒计时');
         }
       });
-      client.addEventListener('input-level', (e) => paintInputLevel(e.detail?.rms));
+      client.addEventListener('input-level', (e) => {
+        // 诊断：麦克风电平（噪声门阈值 -50dB≈0.00316 线性值，说话时应显著高于它）
+        const rms = e.detail?.rms;
+        if (typeof rms === 'number' && !this?._rmsLog) {
+          console.info(`[mic] 麦克风电平 rms=${rms.toFixed(4)}（说话时应 > 0.01，若长期接近 0 说明麦克风被静音/无输入）`);
+        }
+        paintInputLevel(rms);
+      });
       client.addEventListener('toolcall', (e) => void onToolCall(e));
       client.addEventListener('response-finished', () => {
         setState('listening');
@@ -355,8 +365,8 @@ export default function VoiceAssistant() {
       clientRef.current = client;
       await client.connect();
       setState('listening');
-      // 自动问候：连接成功后发送问候（语音）
-      if (pendingGreetingRef.current) sendGreeting();
+      // 自动问候：连接成功后发送问候（语音；支持 admin 自定义文本）
+      if (pendingGreetingRef.current) sendGreeting(pendingGreetingTextRef.current);
     } catch (err) {
       setErrorMsg(err?.message || String(err));
       setState('error');
@@ -401,9 +411,17 @@ export default function VoiceAssistant() {
   // MQTT 调度器 → 语音页操作：启动/关闭对话、刷新页面
   useEffect(() => {
     const onVoice = (e) => {
-      const { action } = e.detail || {};
+      const { action, text } = e.detail || {};
       if (action === 'start') {
-        if (!clientRef.current) void start();
+        const greetText = (text && String(text).trim()) || sessionStorage.getItem('dpm_voice_greet') || '';
+        if (greetText) sessionStorage.removeItem('dpm_voice_greet');
+        if (clientRef.current) {
+          sendGreeting(greetText);
+        } else {
+          pendingGreetingTextRef.current = greetText;
+          pendingGreetingRef.current = true;
+          void start();
+        }
       } else if (action === 'stop') {
         void stop();
       } else if (action === 'refresh') {
@@ -449,7 +467,7 @@ export default function VoiceAssistant() {
     }
     pendingGreetingRef.current = true;
     if (clientRef.current) {
-      sendGreeting();
+      sendGreeting('');
     } else {
       void start(); // start 连接成功后检查 pendingGreetingRef 再发问候
     }

src/utils/useMqttControl.js

@@ -122,6 +122,13 @@ export function useMqttControl() {
 
         // ── 语音对话页操作 ──
         case 'voice_start':
+          // admin 主动问候测试：携带 text；若不在 /voice 页先跳转，文本暂存 sessionStorage
+          if (cmd.params?.text) sessionStorage.setItem('dpm_voice_greet', cmd.params.text);
+          if (location.pathname !== '/voice') navigate('/voice');
+          window.dispatchEvent(new CustomEvent('dpm:voice-control', {
+            detail: { action: 'start', text: cmd.params?.text || '' },
+          }));
+          break;
         case 'voice_stop':
         case 'voice_refresh':
           window.dispatchEvent(new CustomEvent('dpm:voice-control', {

src/voice/s2s-ws-client.js

@@ -652,6 +652,14 @@ export class S2sWsRealtimeClient extends EventTarget {
     if (!this._ws || this._ws.readyState !== WebSocket.OPEN) return;
     if (!this._sessionConfigured) return; // Server rejects audio before session.update.
     if (this._muted) return;
+    // 诊断：首块音频与每 5 秒一次的发送确认（确认麦克风→WS 链路通畅）
+    if (!this._sentChunks) this._sentChunks = 0;
+    this._sentChunks++;
+    if (this._sentChunks === 1) {
+      console.info(`[mic] 首个音频块已发送（${pcm16Buffer.byteLength} 字节 PCM16@16k）→ 语音链路已打通`);
+    } else if (this._sentChunks % 50 === 0) {
+      console.info(`[mic] 已持续发送音频 ${this._sentChunks} 块`);
+    }
     const b64 = base64FromArrayBuffer(pcm16Buffer);
     this._send({ type: "input_audio_buffer.append", audio: b64 });
   }
@@ -706,6 +714,7 @@ export class S2sWsRealtimeClient extends EventTarget {
         break;
 
       case "input_audio_buffer.speech_started":
+        console.info("[vad] 检测到开始说话（服务端 VAD）");
         // User started speaking — stop any audio still playing OR queued, every
         // time. We clear unconditionally (not just when `_aiSpeaking`): after a
         // reply or a tool result the worklet's ring buffer can still be draining
@@ -717,6 +726,7 @@ export class S2sWsRealtimeClient extends EventTarget {
         break;
 
       case "input_audio_buffer.speech_stopped":
+        console.info("[vad] 检测到说话结束（服务端 VAD）→ 发起识别调用");
         if (this._status === "user-speaking") this._setStatus("processing");
         break;