diff --git a/posimai-dev/index.html b/posimai-dev/index.html
index 90c86e5a..a9a47f8c 100644
--- a/posimai-dev/index.html
+++ b/posimai-dev/index.html
@@ -74,23 +74,38 @@
         }
         .status-badge.disconnected { background: rgba(239,68,68,0.12); color: #F87171; }
 
-        /* セッションバッジ（チャットバー内） */
-        .session-badge {
-            font-size: 10px; font-weight: 400; color: rgba(255,255,255,0.25);
-            font-family: monospace; display: none; white-space: nowrap;
-            overflow: hidden; text-overflow: ellipsis; max-width: 180px;
-        }
-        .session-badge.visible { display: block; }
-
         /* Claude開始ボタン — アイコンのみ */
         .claude-btn {
-            width: 32px; height: 32px; border-radius: 8px; border: none; cursor: pointer;
+            width: 36px; height: 36px; border-radius: 8px; border: none; cursor: pointer;
             background: var(--accent-dim); color: var(--accent);
             display: flex; align-items: center; justify-content: center;
             flex-shrink: 0; transition: background 0.15s;
         }
         .claude-btn:hover { background: rgba(167,139,250,0.25); }
 
+        /* マイクボタン */
+        .mic-btn {
+            width: 38px; height: 38px; border-radius: 10px; border: none;
+            background: rgba(255,255,255,0.05); color: rgba(255,255,255,0.35); cursor: pointer;
+            display: none; align-items: center; justify-content: center;
+            flex-shrink: 0; transition: background 0.15s, color 0.15s;
+        }
+        .mic-btn.available { display: flex; }
+        .mic-btn:hover { background: rgba(255,255,255,0.1); color: #F3F4F6; }
+        .mic-btn.listening {
+            background: rgba(239,68,68,0.15); color: #F87171;
+            animation: mic-pulse 1s ease-in-out infinite;
+        }
+        @keyframes mic-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.55; } }
+
+        /* 設定パネル内セッション表示 */
+        .session-info-row {
+            display: flex; align-items: center; gap: 8px; margin-top: 8px;
+            font-size: 11px; color: rgba(255,255,255,0.35); font-family: monospace;
+            background: rgba(255,255,255,0.04); border-radius: 8px; padding: 8px 10px;
+        }
+        .session-info-row.hidden { display: none; }
+
         /* ── Terminal ── */
         #terminal-container {
             flex: 1;
@@ -98,8 +113,8 @@
             padding: 12px 12px 0;
             min-height: 0;
             background:
-                radial-gradient(ellipse at 15% 60%, rgba(34,211,238,0.07) 0%, transparent 55%),
-                radial-gradient(ellipse at 85% 25%, rgba(167,139,250,0.07) 0%, transparent 55%),
+                radial-gradient(ellipse at 15% 60%, rgba(34,211,238,0.14) 0%, transparent 55%),
+                radial-gradient(ellipse at 85% 25%, rgba(167,139,250,0.14) 0%, transparent 55%),
                 var(--dev-bg);
         }
         #terminal-container .xterm { height: 100%; }
@@ -173,7 +188,11 @@
         </div>
         <div style="margin-top:20px">
             <div class="settings-group-label">セッション</div>
-            <a href="/sessions.html" style="font-size:13px;color:var(--accent);text-decoration:none;display:flex;align-items:center;gap:6px;margin-top:8px">
+            <div class="session-info-row hidden" id="settingsSessionBadge">
+                <i data-lucide="terminal" style="width:12px;height:12px;stroke-width:1.75;color:var(--accent);flex-shrink:0"></i>
+                <span id="settingsSessionId">—</span>
+            </div>
+            <a href="/sessions.html" style="font-size:13px;color:var(--accent);text-decoration:none;display:flex;align-items:center;gap:6px;margin-top:10px" rel="noopener">
                 <i data-lucide="history" style="width:14px;height:14px;stroke-width:1.75"></i>
                 過去のセッションを見る
             </a>
@@ -190,7 +209,7 @@
     </div>
     <div class="header-right">
         <button class="claude-btn" id="claudeBtn" aria-label="Claude 開始">
-            <i data-lucide="bot" style="width:15px;height:15px;stroke-width:1.75"></i>
+            <i data-lucide="bot" style="width:20px;height:20px;stroke-width:1.75"></i>
         </button>
         <button class="icon-btn" id="settingsBtn" aria-label="設定" aria-expanded="false">
             <i data-lucide="settings" style="width:18px;height:18px;stroke-width:1.5"></i>
@@ -201,17 +220,18 @@
 <div id="terminal-container"></div>
 
 <div class="chat-bar">
-    <span class="session-badge" id="sessionBadge"></span>
     <input
         type="text"
         class="chat-input"
         id="chatInput"
-        placeholder="Claude に話しかける、またはコマンドを入力..."
         autocomplete="off"
         autocorrect="off"
         autocapitalize="off"
         spellcheck="false"
     >
+    <button class="mic-btn" id="micBtn" aria-label="音声入力">
+        <i data-lucide="mic" style="width:16px;height:16px;stroke-width:1.75"></i>
+    </button>
     <button class="send-btn" id="sendBtn" disabled aria-label="送信">
         <i data-lucide="arrow-up" style="width:16px;height:16px;stroke-width:2.5"></i>
     </button>
@@ -220,12 +240,14 @@
 <script src="https://posimai-ui.vercel.app/v1/base.js" defer></script>
 <script>
 (function () {
-    const statusBadge = document.getElementById('statusBadge');
-    const sessionBadge = document.getElementById('sessionBadge');
-    const container   = document.getElementById('terminal-container');
-    const chatInput   = document.getElementById('chatInput');
-    const sendBtn     = document.getElementById('sendBtn');
-    const claudeBtn   = document.getElementById('claudeBtn');
+    const statusBadge        = document.getElementById('statusBadge');
+    const settingsSessionRow = document.getElementById('settingsSessionBadge');
+    const settingsSessionId  = document.getElementById('settingsSessionId');
+    const container          = document.getElementById('terminal-container');
+    const chatInput          = document.getElementById('chatInput');
+    const sendBtn            = document.getElementById('sendBtn');
+    const claudeBtn          = document.getElementById('claudeBtn');
+    const micBtn             = document.getElementById('micBtn');
 
     // xterm.js
     const term = new Terminal({
@@ -277,8 +299,8 @@
                 const msg = JSON.parse(e.data);
                 if (msg.type === 'output') term.write(msg.data);
                 if (msg.type === 'session') {
-                    sessionBadge.textContent = msg.id;
-                    sessionBadge.classList.add('visible');
+                    settingsSessionId.textContent = msg.id;
+                    settingsSessionRow.classList.remove('hidden');
                 }
             } catch {}
         };
@@ -319,6 +341,40 @@
         term.focus();
     });
 
+    // 音声入力
+    const SR = window.SpeechRecognition || window.webkitSpeechRecognition;
+    if (SR) {
+        micBtn.classList.add('available');
+        const recognition = new SR();
+        recognition.lang = 'ja-JP';
+        recognition.continuous = false;
+        recognition.interimResults = false;
+        let listening = false;
+
+        micBtn.addEventListener('click', () => {
+            if (listening) { recognition.stop(); return; }
+            recognition.start();
+        });
+
+        recognition.onstart = () => {
+            listening = true;
+            micBtn.classList.add('listening');
+        };
+        recognition.onend = () => {
+            listening = false;
+            micBtn.classList.remove('listening');
+        };
+        recognition.onresult = (e) => {
+            const transcript = e.results[0][0].transcript;
+            chatInput.value = transcript;
+            chatInput.focus();
+        };
+        recognition.onerror = () => {
+            listening = false;
+            micBtn.classList.remove('listening');
+        };
+    }
+
     // Resize
     const ro = new ResizeObserver(() => {
         fitAddon.fit();