diff --git a/themes/momentry/page-api-demo-application.php b/themes/momentry/page-api-demo-application.php
index 0ff067b..5520d34 100644
--- a/themes/momentry/page-api-demo-application.php
+++ b/themes/momentry/page-api-demo-application.php
@@ -165,6 +165,24 @@ get_header();
     </div>
 </div>
 
+<!-- 视频播放模态窗口 -->
+<div id="video-modal" class="modal">
+    <div class="modal-content">
+        <div class="modal-header">
+            <span class="close-btn">&times;</span>
+        </div>
+        <div class="modal-body">
+            <video id="video-player" controls width="100%">
+                <source src="" type="video/mp4">
+            </video>
+            <div class="video-info">
+                <div class="chunk-time"></div>
+                <div class="chunk-text"></div>
+            </div>
+        </div>
+    </div>
+</div>
+
 <style>
 .workflow-container {
     margin-top: 1rem;
@@ -337,10 +355,68 @@ get_header();
     padding: 1rem;
     border-radius: 4px;
 }
+
+/* 视频播放模态窗口 */
+.modal {
+    display: none;
+    position: fixed;
+    z-index: 1000;
+    left: 0;
+    top: 0;
+    width: 100%;
+    height: 100%;
+    background-color: rgba(0,0,0,0.8);
+}
+.modal-content {
+    margin: 5% auto;
+    width: 80%;
+    max-width: 1200px;
+    background: #1a1a1a;
+    border-radius: 8px;
+    overflow: hidden;
+}
+.modal-header {
+    padding: 15px;
+    background: #2d2d2d;
+    display: flex;
+    justify-content: space-between;
+}
+.close-btn {
+    color: #fff;
+    font-size: 28px;
+    cursor: pointer;
+}
+#video-player {
+    width: 100%;
+    max-height: 70vh;
+}
+.video-info {
+    padding: 15px;
+    background: #2d2d2d;
+    color: #fff;
+}
+.chunk-item.clickable {
+    cursor: pointer;
+    transition: background 0.2s;
+}
+.chunk-item.clickable:hover {
+    background: #dbeafe;
+}
+.play-btn {
+    margin-top: 8px;
+    padding: 4px 12px;
+    background: var(--primary-color);
+    color: white;
+    border-radius: 4px;
+    font-size: 0.8rem;
+    border: none;
+    cursor: pointer;
+}
 </style>
 
 <script>
-const API_BASE = 'http://localhost:3003/api/v1';
+const API_BASE = 'http://localhost:3002/api/v1';
+const API_KEY = 'muser_68600856036340bcafc01930eb4bd839_1774418104_97221b69';
 let workflowFileUuid = null;
 
 function showResult(elementId, data) {
@@ -349,6 +425,60 @@ function showResult(elementId, data) {
     el.classList.add('has-content');
 }
 
+function playVideoChunk(fileUuid, startTime, endTime, text) {
+    const videoUrl = `${API_BASE}/file/${fileUuid}/video?api_key=${API_KEY}&start_time=${startTime}&end_time=${endTime}`;
+    const modal = document.getElementById('video-modal');
+    const video = document.getElementById('video-player');
+    
+    video.pause();
+    video.src = videoUrl;
+    video.load();
+    
+    document.querySelector('.chunk-time').textContent = 
+        `${startTime.toFixed(1)}s - ${endTime.toFixed(1)}s`;
+    document.querySelector('.chunk-text').textContent = text || '';
+    
+    modal.style.display = 'block';
+    
+    video.onloadeddata = () => {
+        video.play().catch(e => console.warn('playVideoChunk: autoplay blocked', e));
+    };
+    
+    video.onerror = () => {
+        console.error('playVideoChunk: video error', video.error);
+    };
+}
+
+function closeVideoModal() {
+    const video = document.getElementById('video-player');
+    document.getElementById('video-modal').style.display = 'none';
+    video.pause();
+    video.removeAttribute('src');
+    video.load();
+}
+
+document.addEventListener('DOMContentLoaded', function() {
+    document.querySelector('#video-modal .close-btn').onclick = closeVideoModal;
+    
+    window.onclick = (event) => {
+        if (event.target === document.getElementById('video-modal')) {
+            closeVideoModal();
+        }
+    };
+    
+    document.getElementById('search_details_content').addEventListener('click', function(e) {
+        const item = e.target.closest('.chunk-item.clickable');
+        if (!item) return;
+        const fu = item.dataset.fileUuid;
+        const st = parseFloat(item.dataset.startTime);
+        const et = parseFloat(item.dataset.endTime);
+        const txt = item.dataset.text || '';
+        if (fu && !isNaN(st) && !isNaN(et)) {
+            playVideoChunk(fu, st, et, txt);
+        }
+    });
+});
+
 function updateStep(step, status, isCompleted = false) {
     const stepEl = document.getElementById(`step${step}`);
     const statusEl = document.getElementById(`step${step}_status`);
@@ -569,10 +699,10 @@ async function searchWorkflow() {
     if (!query) return alert('請輸入搜尋查詢');
 
     try {
-        const res = await fetch(`${API_BASE}/search`, {
+        const res = await fetch(`${API_BASE}/search/universal?api_key=${API_KEY}`, {
             method: 'POST',
             headers: { 'Content-Type': 'application/json' },
-            body: JSON.stringify({ query, type: 'chunk' })
+            body: JSON.stringify({ query, types: ['chunk'] })
         });
         const data = await res.json();
 
@@ -582,13 +712,19 @@ async function searchWorkflow() {
             <p>涵蓋 ${data.files_count || 0} 個檔案</p>
         `;
         document.getElementById('search_details_content').innerHTML = (data.results || [])
-            .map(r => `
-                <div class="chunk-item">
-                    <div class="chunk-time">${r.file_name} | ${r.start_time?.toFixed(1)}s - ${r.end_time?.toFixed(1)}s</div>
-                    <div>${r.text_content || r.description || '無內容'}</div>
-                    <div class="badge">相似度: ${(r.similarity * 100).toFixed(1)}%</div>
-                </div>
-            `).join('') || '<p>沒有結果</p>';
+            .map(r => {
+                const textAttr = (r.text || '').replace(/"/g, '&quot;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
+                return `<div class="chunk-item clickable"
+                     data-file-uuid="${r.file_uuid}"
+                     data-start-time="${r.start_time || 0}"
+                     data-end-time="${r.end_time || (r.start_time || 0) + 10}"
+                     data-text="${textAttr}">
+                    <div class="chunk-time">${r.file_uuid} | ${(r.start_time || 0).toFixed(1)}s - ${(r.end_time || (r.start_time || 0) + 10).toFixed(1)}s</div>
+                    <div>${r.text || '無內容'}</div>
+                    <div class="badge">相似度: ${(r.score * 100).toFixed(1)}%</div>
+                    <button class="play-btn">▶ 播放片段</button>
+                </div>`;
+            }).join('') || '<p>沒有結果</p>';
     } catch (e) {
         alert('搜尋失敗: ' + e.message);
     }
diff --git a/themes/momentry/page-api-demo-display.php b/themes/momentry/page-api-demo-display.php
index 4025371..72cfca7 100644
--- a/themes/momentry/page-api-demo-display.php
+++ b/themes/momentry/page-api-demo-display.php
@@ -207,7 +207,7 @@ get_header();
 </style>
 
 <script>
-const API_BASE = 'http://localhost:3003/api/v1';
+const API_BASE = 'http://localhost:3002/api/v1';
 
 async function loadDashboard() {
     const uuid = document.getElementById('dashboard_uuid').value.trim();
diff --git a/themes/momentry/page-api-demo-operation.php b/themes/momentry/page-api-demo-operation.php
index 91ab4ef..21070ae 100644
--- a/themes/momentry/page-api-demo-operation.php
+++ b/themes/momentry/page-api-demo-operation.php
@@ -171,7 +171,7 @@ get_header();
 </style>
 
 <script>
-const API_BASE = 'http://localhost:3003/api/v1';
+const API_BASE = 'http://localhost:3002/api/v1';
 
 function showResult(elementId, data) {
     const el = document.getElementById(elementId);
diff --git a/themes/momentry/page-api-demo-query.php b/themes/momentry/page-api-demo-query.php
index f15218b..3acb83a 100644
--- a/themes/momentry/page-api-demo-query.php
+++ b/themes/momentry/page-api-demo-query.php
@@ -104,6 +104,24 @@ get_header();
     </div>
 </div>
 
+<!-- 视频播放模态窗口 -->
+<div id="video-modal" class="modal">
+    <div class="modal-content">
+        <div class="modal-header">
+            <span class="close-btn">&times;</span>
+        </div>
+        <div class="modal-body">
+            <video id="video-player" controls width="100%">
+                <source src="" type="video/mp4">
+            </video>
+            <div class="video-info">
+                <div class="chunk-time"></div>
+                <div class="chunk-text"></div>
+            </div>
+        </div>
+    </div>
+</div>
+
 <style>
 .api-nav {
     display: flex;
@@ -223,10 +241,75 @@ get_header();
 .badge-status.processing { background: #dbeafe; color: #1e40af; }
 .badge-status.completed { background: #d1fae5; color: #065f46; }
 .badge-status.error { background: #fee2e2; color: #991b1b; }
+
+/* 视频播放模态窗口 */
+.modal {
+    display: none;
+    position: fixed;
+    z-index: 1000;
+    left: 0;
+    top: 0;
+    width: 100%;
+    height: 100%;
+    background-color: rgba(0,0,0,0.8);
+}
+.modal-content {
+    margin: 5% auto;
+    width: 80%;
+    max-width: 1200px;
+    background: #1a1a1a;
+    border-radius: 8px;
+    overflow: hidden;
+}
+.modal-header {
+    padding: 15px;
+    background: #2d2d2d;
+    display: flex;
+    justify-content: space-between;
+}
+.close-btn {
+    color: #fff;
+    font-size: 28px;
+    cursor: pointer;
+}
+#video-player {
+    width: 100%;
+    max-height: 70vh;
+}
+.video-info {
+    padding: 15px;
+    background: #2d2d2d;
+    color: #fff;
+}
+.chunk-item.clickable {
+    cursor: pointer;
+    transition: background 0.2s;
+    padding: 0.75rem;
+    background: #f8fafc;
+    border-radius: 4px;
+    margin-bottom: 0.5rem;
+}
+.chunk-item.clickable:hover {
+    background: #dbeafe;
+}
+.play-btn {
+    margin-top: 8px;
+    padding: 4px 12px;
+    background: var(--primary-color);
+    color: white;
+    border-radius: 4px;
+    font-size: 0.8rem;
+    border: none;
+    cursor: pointer;
+}
 </style>
 
 <script>
 const API_BASE = 'http://localhost:3002/api/v1';
+const API_KEY = 'muser_68600856036340bcafc01930eb4bd839_1774418104_97221b69';
+
+const URL_WITH_KEY = `${API_BASE}?api_key=${API_KEY}`;
+const URL_WITHOUT_KEY = API_BASE;
 
 function showResult(elementId, data) {
     const el = document.getElementById(elementId);
@@ -241,6 +324,60 @@ function showError(elementId, message) {
     el.style.color = '#ef4444';
 }
 
+function playVideoChunk(fileUuid, startTime, endTime, text) {
+    const videoUrl = `${API_BASE}/file/${fileUuid}/video?api_key=${API_KEY}&start_time=${startTime}&end_time=${endTime}`;
+    const modal = document.getElementById('video-modal');
+    const video = document.getElementById('video-player');
+    
+    video.pause();
+    video.src = videoUrl;
+    video.load();
+    
+    document.querySelector('.chunk-time').textContent = 
+        `${startTime.toFixed(1)}s - ${endTime.toFixed(1)}s`;
+    document.querySelector('.chunk-text').textContent = text || '';
+    
+    modal.style.display = 'block';
+    
+    video.onloadeddata = () => {
+        video.play().catch(e => console.warn('playVideoChunk: autoplay blocked', e));
+    };
+    
+    video.onerror = () => {
+        console.error('playVideoChunk: video error', video.error);
+    };
+}
+
+function closeVideoModal() {
+    const video = document.getElementById('video-player');
+    document.getElementById('video-modal').style.display = 'none';
+    video.pause();
+    video.removeAttribute('src');
+    video.load();
+}
+
+document.addEventListener('DOMContentLoaded', function() {
+    document.querySelector('#video-modal .close-btn').onclick = closeVideoModal;
+    
+    window.onclick = (event) => {
+        if (event.target === document.getElementById('video-modal')) {
+            closeVideoModal();
+        }
+    };
+    
+    document.getElementById('search_result').addEventListener('click', function(e) {
+        const item = e.target.closest('.chunk-item.clickable');
+        if (!item) return;
+        const fu = item.dataset.fileUuid;
+        const st = parseFloat(item.dataset.startTime);
+        const et = parseFloat(item.dataset.endTime);
+        const txt = item.dataset.text || '';
+        if (fu && !isNaN(st) && !isNaN(et)) {
+            playVideoChunk(fu, st, et, txt);
+        }
+    });
+});
+
 async function queryFile() {
     const uuid = document.getElementById('file_uuid').value.trim();
     if (!uuid) return alert('請輸入 file_uuid');
@@ -320,18 +457,58 @@ async function queryFileHistory() {
 async function semanticSearch() {
     const query = document.getElementById('search_query').value.trim();
     const type = document.getElementById('search_type').value;
-    if (!query) return alert('請輸入搜尋查詢');
-
+    if (!query) return alert('請輸入搜尋查詞');
+    
+    const resultEl = document.getElementById('search_result');
+    resultEl.innerHTML = '<p style="padding: 1rem;">搜尋中，請稍候...（身份搜尋可能需要較長時間）</p>';
+    resultEl.classList.add('has-content');
+    
     try {
-        const res = await fetch(`${API_BASE}/search`, {
-            method: 'POST',
-            headers: { 'Content-Type': 'application/json' },
-            body: JSON.stringify({ query, type })
-        });
-        const data = await res.json();
-        showResult('search_result', data);
+        let resultsHtml = '';
+        if (type === 'identity') {
+            const res = await fetch(`${API_BASE}/identities/search?q=${encodeURIComponent(query)}&api_key=${API_KEY}`);
+            const data = await res.json();
+            const results = data.results || [];
+            resultsHtml = results.map(i => {
+                const textAttr = (i.text_content || '').replace(/"/g, '&quot;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
+                return `<div class="chunk-item clickable"
+                     data-file-uuid="${i.file_uuid}"
+                     data-start-time="${i.start_time || 0}"
+                     data-end-time="${i.end_time || (i.start_time || 0) + 10}"
+                     data-text="${textAttr}">
+                    <div style="font-weight: 600; color: #1e40af;">${i.name} (${i.source || 'unknown'})</div>
+                    <div class="chunk-time">${i.file_uuid} | ${(i.start_time || 0).toFixed(1)}s - ${(i.end_time || (i.start_time || 0) + 10).toFixed(1)}s</div>
+                    <div style="margin-top: 4px;">${i.text_content || '無內容'}</div>
+                    <button class="play-btn">▶ 播放片段</button>
+                </div>`;
+            }).join('');
+            resultEl.innerHTML = `<p style="padding: 0.5rem; background: #d1fae5; border-radius: 4px; margin-bottom: 0.5rem;">找到 ${data.total || 0} 個身份相關片段</p>${resultsHtml || '<p>沒有結果</p>'}`;
+        } else {
+            const typesParam = type === 'face' ? ['frame'] : ['chunk'];
+            const res = await fetch(`${API_BASE}/search/universal?api_key=${API_KEY}`, {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json' },
+                body: JSON.stringify({ query, types: typesParam })
+            });
+            const data = await res.json();
+            const results = data.results || [];
+            resultsHtml = results.map(r => {
+                const textAttr = (r.text || '').replace(/"/g, '&quot;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
+                return `<div class="chunk-item clickable"
+                     data-file-uuid="${r.file_uuid}"
+                     data-start-time="${r.start_time || 0}"
+                     data-end-time="${r.end_time || (r.start_time || 0) + 10}"
+                     data-text="${textAttr}">
+                    <div class="chunk-time">${r.file_uuid} | ${(r.start_time || 0).toFixed(1)}s - ${(r.end_time || (r.start_time || 0) + 10).toFixed(1)}s</div>
+                    <div style="margin-top: 4px;">${r.text || '無內容'}</div>
+                    <div class="badge-status completed" style="margin-top: 4px;">相似度: ${(r.score * 100).toFixed(1)}%</div>
+                    <button class="play-btn">▶ 播放片段</button>
+                </div>`;
+            }).join('');
+            resultEl.innerHTML = `<p style="padding: 0.5rem; background: #d1fae5; border-radius: 4px; margin-bottom: 0.5rem;">找到 ${data.total || 0} 個片段</p>${resultsHtml || '<p>沒有結果</p>'}`;
+        }
     } catch (e) {
-        showError('search_result', e.message);
+        resultEl.innerHTML = '<p style="color:#ef4444; padding: 1rem;">錯誤: ' + e.message + '</p>';
     }
 }
 </script>