新增任务实时详情：Agent实时状态上报(决策/执行/验证阶段)+前端详情面板(2.5s轮询步骤日志/截图/停止按钮)；修复static路径

static/index.html

@@ -46,6 +46,33 @@
   </section>
 </main>
 
+<div id="detail-modal" class="modal hidden">
+  <div class="modal-body detail-body">
+    <div class="modal-head">
+      <span id="detail-title">任务详情</span>
+      <span>
+        <button id="detail-report-btn" class="btn small hidden">📄 完整报告</button>
+        <button id="detail-stop-btn" class="btn small danger hidden">⏹ 停止</button>
+        <button id="detail-close" class="btn small">关闭</button>
+      </span>
+    </div>
+    <div class="detail-content">
+      <div class="detail-meta" id="detail-meta"></div>
+      <div class="live-bar hidden" id="live-bar">
+        <span class="live-dot"></span>
+        <div class="live-info">
+          <div class="live-phase" id="live-phase"></div>
+          <div class="live-detail" id="live-detail"></div>
+        </div>
+      </div>
+      <div class="detail-steps-head">步骤日志</div>
+      <div class="detail-steps" id="detail-steps">
+        <div class="empty">加载中...</div>
+      </div>
+    </div>
+  </div>
+</div>
+
 <div id="report-modal" class="modal hidden">
   <div class="modal-body">
     <div class="modal-head"><span id="modal-title">测试报告</span><button id="modal-close" class="btn small">关闭</button></div>