Switch TTS to edge-tts (ko-KR-SunHiNeural), add TTS toggle + mic auto-send

- Replace piper TTS with edge-tts (Microsoft neural Korean voice)
  - piper ko_KR-kss-medium uses pygoruut phoneme type unsupported by C++ binary,
    causing Chinese-sounding output; edge-tts solves this via online neural TTS
  - Added src/tools/edge_tts_synth.py Python helper script
  - Server TTS endpoint now dispatches by provider (edge_tts vs piper)
  - Config updated: voice.tts.provider = "edge_tts", voice = "ko-KR-SunHiNeural"
- Add TTS toggle switch to web UI (chat input bar)
  - Toggles visibility of all 🔊 buttons and stops active playback
  - State persisted in localStorage (default: on)
- Mic input now auto-submits after speech recognition completes

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.smallclaw/config.json

@@ -223,10 +223,8 @@
       "language": "ko"
     },
     "tts": {
-      "provider": "piper",
+      "provider": "edge_tts",
-      "piperPath": "/usr/local/bin/piper",
+      "voice": "ko-KR-SunHiNeural"
-      "modelPath": "/usr/local/share/piper-voices/ko_KR-kss-medium.onnx",
-      "configPath": "/usr/local/share/piper-voices/ko_KR-kss-medium.onnx.json"
     }
   },
   "search": {

src/gateway/server-v2.ts

@@ -8748,27 +8748,48 @@ app.post('/api/voice/tts', async (req: express.Request, res: express.Response) =
   if (!text || typeof text !== 'string') { res.status(400).json({ success: false, error: 'text required' }); return; }
   const cfg = (getConfig().getConfig() as any)?.voice;
   if (!cfg?.tts) { res.status(503).json({ success: false, error: 'TTS not configured' }); return; }
-  const piperPath = cfg.tts.piperPath || 'piper';
+  const provider = cfg.tts.provider || 'piper';
-  const modelPath = cfg.tts.modelPath || '';
-  const configPath = cfg.tts.configPath || '';
-  if (!modelPath) { res.status(503).json({ success: false, error: 'TTS model path not configured' }); return; }
   try {
     const os = await import('os');
-    const wavPath = path.join(os.tmpdir(), `tts_${Date.now()}.wav`);
-    const piperArgs = ['--model', modelPath, '--output_file', wavPath];
-    if (configPath) piperArgs.push('--config', configPath);
     const { spawn: spawnProc } = await import('child_process');
-    await new Promise<void>((resolve, reject) => {
+    if (provider === 'edge_tts') {
-      const piper = spawnProc(piperPath, piperArgs);
+      const voice = cfg.tts.voice || 'ko-KR-SunHiNeural';
-      piper.stdin.write(text.slice(0, 2000), 'utf8');
+      const mp3Path = path.join(os.tmpdir(), `tts_${Date.now()}.mp3`);
-      piper.stdin.end();
+      const scriptPath = path.join(__dirname, '../../src/tools/edge_tts_synth.py');
-      piper.on('close', (code: number | null) => code === 0 ? resolve() : reject(new Error(`Piper exited ${code}`)));
+      await new Promise<void>((resolve, reject) => {
-      piper.on('error', reject);
+        const py = spawnProc('python3', [scriptPath, voice, mp3Path]);
-    });
+        py.stdin.write(text.slice(0, 2000), 'utf8');
-    const wav = fs.readFileSync(wavPath);
+        py.stdin.end();
-    try { fs.unlinkSync(wavPath); } catch {}
+        let stderr = '';
-    res.set('Content-Type', 'audio/wav');
+        py.stderr.on('data', (d: Buffer) => { stderr += d.toString(); });
-    res.send(wav);
+        py.on('close', (code: number | null) => code === 0 ? resolve() : reject(new Error(`edge-tts exited ${code}: ${stderr}`)));
+        py.on('error', reject);
+      });
+      const mp3 = fs.readFileSync(mp3Path);
+      try { fs.unlinkSync(mp3Path); } catch {}
+      res.set('Content-Type', 'audio/mpeg');
+      res.send(mp3);
+    } else {
+      // piper
+      const piperPath = cfg.tts.piperPath || 'piper';
+      const modelPath = cfg.tts.modelPath || '';
+      const configPath = cfg.tts.configPath || '';
+      if (!modelPath) { res.status(503).json({ success: false, error: 'TTS model path not configured' }); return; }
+      const wavPath = path.join(os.tmpdir(), `tts_${Date.now()}.wav`);
+      const piperArgs = ['--model', modelPath, '--output_file', wavPath];
+      if (configPath) piperArgs.push('--config', configPath);
+      await new Promise<void>((resolve, reject) => {
+        const piper = spawnProc(piperPath, piperArgs);
+        piper.stdin.write(text.slice(0, 2000), 'utf8');
+        piper.stdin.end();
+        piper.on('close', (code: number | null) => code === 0 ? resolve() : reject(new Error(`Piper exited ${code}`)));
+        piper.on('error', reject);
+      });
+      const wav = fs.readFileSync(wavPath);
+      try { fs.unlinkSync(wavPath); } catch {}
+      res.set('Content-Type', 'audio/wav');
+      res.send(wav);
+    }
   } catch (e: any) {
     res.status(500).json({ success: false, error: String(e?.message || e) });
   }

src/tools/edge_tts_synth.py

@@ -0,0 +1,15 @@
+#!/usr/bin/env python3
+import asyncio
+import sys
+import edge_tts
+
+async def main():
+    text = sys.stdin.read().strip()
+    if not text:
+        sys.exit(1)
+    voice = sys.argv[1] if len(sys.argv) > 1 else 'ko-KR-SunHiNeural'
+    output_file = sys.argv[2] if len(sys.argv) > 2 else '/tmp/tts_edge_out.mp3'
+    communicate = edge_tts.Communicate(text, voice)
+    await communicate.save(output_file)
+
+asyncio.run(main())

web-ui/index.html

@@ -1025,6 +1025,7 @@
   @keyframes mic-pulse { 0%,100%{opacity:1} 50%{opacity:0.55} }
   .tts-btn { background:none;border:none;cursor:pointer;font-size:13px;padding:1px 4px;border-radius:4px;opacity:0.45;vertical-align:middle;line-height:1; }
   .tts-btn:hover,.tts-btn.playing{opacity:1;background:var(--panel-2);}
+  body.tts-disabled .tts-btn { display:none !important; }
   .export-dropdown { position:relative; display:inline-block; }
   .export-menu { display:none; position:absolute; right:0; top:calc(100% + 4px); background:var(--panel-2); border:1px solid var(--border); border-radius:8px; box-shadow:0 4px 16px rgba(0,0,0,0.18); z-index:2000; min-width:160px; overflow:hidden; }
   .export-menu button { display:block; width:100%; padding:8px 14px; text-align:left; background:none; border:none; cursor:pointer; font-size:12px; color:var(--text); white-space:nowrap; }
@@ -2374,6 +2375,12 @@
         </label>
         <span class="agent-toggle-label" id="agent-mode-label">채팅</span>
         <span class="agent-mode-badge" id="agent-mode-badge">AGENT</span>
+        <span style="color:var(--line);margin:0 6px;user-select:none">|</span>
+        <span class="agent-toggle-label">TTS</span>
+        <label class="toggle-switch" title="AI 응답 음성 읽기 켜기/끄기">
+          <input type="checkbox" id="tts-mode-toggle" onchange="updateTTSMode()">
+          <span class="toggle-track"></span>
+        </label>
         <div class="agent-toggle-right" style="display:flex;align-items:center;gap:6px">
           <button class="quick-mode-btn" id="context-pin-btn" onclick="toggleContextPinMode()" title="메시지를 컨텍스트에 고정">
             <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"><path d="M12 17v5"/><path d="M9 10.76a2 2 0 0 1-1.11 1.79l-1.78.9A2 2 0 0 0 5 15.24V16a1 1 0 0 0 1 1h12a1 1 0 0 0 1-1v-.76a2 2 0 0 0-1.11-1.79l-1.78-.9A2 2 0 0 1 15 10.76V7a1 1 0 0 1 1-1 2 2 0 0 0 0-4H8a2 2 0 0 0 0 4 1 1 0 0 1 1 1z"/></svg>
@@ -3946,6 +3953,7 @@ let agentSessionId = '';
 let currentUser = null;
 setAgentSessionId(generateSessionId()); // always fresh session on page load
 checkAuth(); // Check authentication on page load
+initTTSToggle();
 
 // ── Server log panel ──────────────────────────────────────────────────────────
 let logScrollLocked = true;
@@ -8866,6 +8874,7 @@ function startMicRecording() {
       input.value = (input.value ? input.value + ' ' : '') + transcript;
       input.focus();
       input.dispatchEvent(new Event('input'));
+      setTimeout(function() { handleSendStop(); }, 50);
     }
   };
   _speechRecog.onerror = function(e) {
@@ -8884,9 +8893,26 @@ function stopMicRecording() {
 }
 
 // ── Voice: TTS (음성 출력) ───────────────────────────────────────────────
+var _ttsEnabled = localStorage.getItem('ttsEnabled') !== 'false'; // default on
 var _ttsAudio = null;
 var _ttsBtnActive = null;
 
+function updateTTSMode() {
+  _ttsEnabled = document.getElementById('tts-mode-toggle').checked;
+  localStorage.setItem('ttsEnabled', String(_ttsEnabled));
+  document.body.classList.toggle('tts-disabled', !_ttsEnabled);
+  if (!_ttsEnabled && _ttsAudio) {
+    _ttsAudio.pause(); _ttsAudio = null;
+    if (_ttsBtnActive) { _ttsBtnActive.textContent = '🔊'; _ttsBtnActive.classList.remove('playing'); _ttsBtnActive = null; }
+  }
+}
+
+function initTTSToggle() {
+  var toggle = document.getElementById('tts-mode-toggle');
+  if (toggle) toggle.checked = _ttsEnabled;
+  document.body.classList.toggle('tts-disabled', !_ttsEnabled);
+}
+
 function playTTSMsg(btn, idx) {
   var msg = chatHistory[idx];
   if (!msg) return;