Update web client layout

examples/web_client.html

@@ -192,7 +192,7 @@
       }
 
       .log {
-        height: 520px;
+        height: 320px;
         overflow: auto;
         padding: 12px;
         background: #0d0d14;
@@ -202,6 +202,33 @@
         line-height: 1.4;
       }
 
+      .chat {
+        height: 260px;
+        overflow: auto;
+        padding: 12px;
+        background: #0d0d14;
+        border-radius: 12px;
+        border: 1px solid var(--grid);
+        font-size: 0.9rem;
+        line-height: 1.45;
+      }
+
+      .chat-entry {
+        padding: 8px 10px;
+        margin-bottom: 8px;
+        border-radius: 10px;
+        background: rgba(255, 255, 255, 0.04);
+        border: 1px solid rgba(255, 255, 255, 0.06);
+      }
+
+      .chat-entry.user {
+        border-left: 3px solid var(--accent-2);
+      }
+
+      .chat-entry.ai {
+        border-left: 3px solid var(--good);
+      }
+
       .log-entry {
         padding: 6px 8px;
         border-bottom: 1px dashed rgba(255, 255, 255, 0.06);
@@ -256,6 +283,9 @@
         .log {
           height: 360px;
         }
+        .chat {
+          height: 260px;
+        }
       }
     </style>
   </head>
@@ -314,9 +344,15 @@
         </div>
       </section>
 
-      <section class="panel stack">
+      <section class="stack">
+        <div class="panel stack">
+          <h2>Chat History</h2>
+          <div class="chat" id="chatHistory"></div>
+        </div>
+        <div class="panel stack">
           <h2>Event Log</h2>
           <div class="log" id="log"></div>
+        </div>
       </section>
     </main>
 
@@ -342,6 +378,7 @@
       const clearLogBtn = document.getElementById("clearLogBtn");
       const chatInput = document.getElementById("chatInput");
       const logEl = document.getElementById("log");
+      const chatHistory = document.getElementById("chatHistory");
       const statusDot = document.getElementById("statusDot");
       const statusText = document.getElementById("statusText");
       const statusSub = document.getElementById("statusSub");
@@ -381,12 +418,35 @@
         logEl.scrollTop = logEl.scrollHeight;
       }
 
+      function addChat(role, text) {
+        const entry = document.createElement("div");
+        entry.className = `chat-entry ${role === "AI" ? "ai" : "user"}`;
+        entry.textContent = `${role}: ${text}`;
+        chatHistory.appendChild(entry);
+        chatHistory.scrollTop = chatHistory.scrollHeight;
+      }
+
       function setStatus(connected, detail) {
         statusDot.classList.toggle("on", connected);
         statusText.textContent = connected ? "Connected" : "Disconnected";
         statusSub.textContent = detail || "";
       }
 
+      async function ensureAudioContext() {
+        if (audioCtx) return;
+        audioCtx = new (window.AudioContext || window.webkitAudioContext)();
+        playbackDest = audioCtx.createMediaStreamDestination();
+        audioOut.srcObject = playbackDest.stream;
+        try {
+          await audioOut.play();
+        } catch (err) {
+          logLine("sys", "Audio playback blocked (user gesture needed)", { err: String(err) });
+        }
+        if (outputSelect.value) {
+          await setOutputDevice(outputSelect.value);
+        }
+      }
+
       function downsampleBuffer(buffer, inRate, outRate) {
         if (outRate === inRate) return buffer;
         const ratio = inRate / outRate;
@@ -443,6 +503,7 @@
         ws.onopen = () => {
           setStatus(true, "Session open");
           logLine("sys", "WebSocket connected");
+          ensureAudioContext();
         };
 
         ws.onclose = () => {
@@ -486,6 +547,12 @@
       function handleEvent(event) {
         const type = event.event || "unknown";
         logLine("event", type, event);
+        if (type === "transcript" && event.isFinal && event.text) {
+          addChat("You", event.text);
+        }
+        if (type === "llmResponse" && event.isFinal && event.text) {
+          addChat("AI", event.text);
+        }
         if (type === "trackStart") {
           discardAudio = false;
           playbackTime = audioCtx ? audioCtx.currentTime : 0;
@@ -500,12 +567,7 @@
           logLine("sys", "Connect before starting mic");
           return;
         }
-        if (!audioCtx) {
+        await ensureAudioContext();
-          audioCtx = new AudioContext();
-          playbackDest = audioCtx.createMediaStreamDestination();
-          audioOut.srcObject = playbackDest.stream;
-          await audioOut.play().catch(() => {});
-        }
         const deviceId = inputSelect.value || undefined;
         micStream = await navigator.mediaDevices.getUserMedia({
           audio: deviceId ? { deviceId: { exact: deviceId } } : true,
@@ -595,6 +657,8 @@
       sendChatBtn.addEventListener("click", () => {
         const text = chatInput.value.trim();
         if (!text) return;
+        ensureAudioContext();
+        addChat("You", text);
         sendCommand({ command: "chat", text });
         chatInput.value = "";
       });