diff --git a/diagnostic/index.html b/diagnostic/index.html
index 4307583..cbf9abc 100644
--- a/diagnostic/index.html
+++ b/diagnostic/index.html
@@ -380,7 +380,6 @@
         <button class="tab-btn" data-tab="bridge" onclick="switchTab('bridge')">Bridge <span class="tab-count" id="count-bridge">0</span></button>
         <button class="tab-btn" data-tab="server" onclick="switchTab('server')">Server <span class="tab-count" id="count-server">0</span></button>
         <button class="tab-btn" data-tab="pipeline" onclick="switchTab('pipeline')" style="margin-left:auto;border-color:#0096FF44;color:#0096FF">Pipeline <span class="tab-count" id="count-pipeline">0</span></button>
-        <button class="tab-btn" data-tab="tts" onclick="switchTab('tts')" style="border-color:#34C75944;color:#34C759">TTS</button>
       </div>
     </div>
     <div class="log-panel">
@@ -400,27 +399,6 @@
       <div class="log-box hidden" id="log-bridge"></div>
       <div class="log-box hidden" id="log-server"></div>
       <div class="log-box hidden" id="log-pipeline"></div>
-      <div class="log-box hidden" id="log-tts" style="padding:12px;">
-        <h3 style="color:#34C759;margin:0 0 12px;">TTS Diagnose (XTTS)</h3>
-        <div style="display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:12px;">
-          <div style="background:#1E1E2E;padding:8px;border-radius:6px;">
-            <div style="color:#8888AA;font-size:10px;text-transform:uppercase;">Status</div>
-            <div style="font-size:14px;margin-top:4px;" id="tts-status">Unbekannt</div>
-          </div>
-          <div style="background:#1E1E2E;padding:8px;border-radius:6px;">
-            <div style="color:#8888AA;font-size:10px;text-transform:uppercase;">Letzter Fehler</div>
-            <div style="color:#FF6B6B;font-size:12px;margin-top:4px;word-break:break-all;" id="tts-last-error">-</div>
-          </div>
-        </div>
-        <div style="margin-bottom:8px;">
-          <input type="text" id="tts-test-text" value="Hallo Stefan, ich bin ARIA." placeholder="Test-Text..." style="background:#1E1E2E;border:1px solid #2A2A3E;border-radius:6px;padding:8px;color:#fff;font-size:13px;width:100%;box-sizing:border-box;">
-        </div>
-        <div style="display:flex;gap:8px;">
-          <button class="btn" onclick="testTTS('')" style="flex:1;">XTTS testen</button>
-          <button class="btn secondary" onclick="checkTTSStatus()" style="flex:1;">Status pruefen</button>
-        </div>
-        <div id="tts-log" style="margin-top:12px;max-height:200px;overflow-y:auto;font-size:11px;font-family:monospace;color:#8888AA;"></div>
-      </div>
     </div>
   </div>
 
@@ -856,27 +834,6 @@
         if (msg.type === 'state') { updateState(msg.state); return; }
         if (msg.type === 'log') { addLog(msg.entry.level, msg.entry.source, msg.entry.message, msg.entry.ts); return; }
 
-        if (msg.type === 'tts_result') {
-          if (msg.ok) {
-            ttsLog(`\u2705 ${msg.voice}: ${msg.duration}ms, ${msg.size} bytes`);
-            document.getElementById('tts-status').textContent = 'OK';
-            document.getElementById('tts-status').style.color = '#34C759';
-          } else {
-            ttsLog(`\u274C Fehler: ${msg.error}`);
-            document.getElementById('tts-status').textContent = 'Fehler';
-            document.getElementById('tts-status').style.color = '#FF3B30';
-            document.getElementById('tts-last-error').textContent = msg.error;
-          }
-          return;
-        }
-        if (msg.type === 'tts_status') {
-          document.getElementById('tts-status').textContent = msg.ok ? 'OK' : 'Fehler';
-          document.getElementById('tts-status').style.color = msg.ok ? '#34C759' : '#FF3B30';
-          if (msg.error) { document.getElementById('tts-last-error').textContent = msg.error; ttsLog(`Fehler: ${msg.error}`); }
-          else { document.getElementById('tts-last-error').textContent = '-'; ttsLog('TTS OK'); }
-          return;
-        }
-
         if (msg.type === 'agent_activity') {
           updateThinkingIndicator(msg);
           return;
@@ -2089,26 +2046,6 @@
       send({ action: 'set_mode', mode });
     }
 
-    // ── TTS Diagnose ─────────────────────────────
-    function ttsLog(msg) {
-      const el = document.getElementById('tts-log');
-      const time = new Date().toLocaleTimeString('de-DE');
-      el.innerHTML += `<div>[${time}] ${escapeHtml(msg)}</div>`;
-      el.scrollTop = el.scrollHeight;
-    }
-
-    function testTTS(voice) {
-      const text = document.getElementById('tts-test-text').value.trim();
-      if (!text) return;
-      ttsLog(`Teste ${voice}: "${text}"...`);
-      send({ action: 'test_tts', voice, text });
-    }
-
-    function checkTTSStatus() {
-      ttsLog('Pruefe TTS-Status...');
-      send({ action: 'check_tts' });
-    }
-
     function openLightbox(mediaType, url) {
       const lb = document.getElementById('lightbox');
       if (mediaType === 'video') {
diff --git a/diagnostic/server.js b/diagnostic/server.js
index 85fcd6b..6998a1f 100644
--- a/diagnostic/server.js
+++ b/diagnostic/server.js
@@ -1571,12 +1571,8 @@ wss.on("connection", (ws) => {
         } catch {}
         sendToRVS_raw({ type: "config", payload: voiceConfig, timestamp: Date.now() });
         log("info", "server", `Voice-Config gespeichert: xttsVoice=${voiceConfig.xttsVoice || "default"}, whisper=${voiceConfig.whisperModel || "-"}`);
-      } else if (msg.action === "test_tts") {
-        handleTestTTS(ws, msg.text || "Test");
       } else if (msg.action === "preview_voice") {
         handleVoicePreview(ws, msg.voice || "", msg.text || "Hallo.", msg.speed);
-      } else if (msg.action === "check_tts") {
-        handleCheckTTS(ws);
       } else if (msg.action === "check_desktop") {
         checkDesktopAvailable(ws);
       } else if (msg.action === "load_chat_history") {
@@ -1814,36 +1810,6 @@ async function handleVoicePreview(clientWs, voice, text, speed) {
   }
 }
 
-async function handleTestTTS(clientWs, text) {
-  try {
-    log("info", "server", `TTS-Test via XTTS: "${text}"`);
-    // Via RVS an die XTTS-Bridge: xtts_request mit Test-Text
-    const requestId = crypto.randomUUID();
-    sendToRVS_raw({
-      type: "xtts_request",
-      payload: { text, language: "de", requestId, voice: "" },
-      timestamp: Date.now(),
-    });
-    clientWs.send(JSON.stringify({ type: "tts_result", ok: true, duration: "pending", size: "?" }));
-  } catch (err) {
-    clientWs.send(JSON.stringify({ type: "tts_result", ok: false, error: err.message }));
-  }
-}
-
-async function handleCheckTTS(clientWs) {
-  try {
-    // XTTS-Status ueber RVS abfragen (xtts_list_voices)
-    sendToRVS_raw({ type: "xtts_list_voices", payload: {}, timestamp: Date.now() });
-    clientWs.send(JSON.stringify({
-      type: "tts_status",
-      ok: true,
-      error: null,
-    }));
-  } catch (err) {
-    clientWs.send(JSON.stringify({ type: "tts_status", ok: false, error: err.message }));
-  }
-}
-
 function checkDesktopAvailable(clientWs) {
   // Pruefen ob VNC auf der VM laeuft (Port 5900/5901)
   const checkSock = net.connect({ host: "host.docker.internal", port: 5901 }, () => {