ux: 待签合同列表新增「待签内容」列，展示场景标签+签署方式

每行员工直接显示待签文件的类型（劳动合同/离职协议/规章制度等）
和签署方式（电子签/线下手签），无需展开即可看出是什么待签。

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Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

frontend/src/pages/ESign.tsx

@@ -824,7 +824,8 @@ function PendingTab({ pendingList, loading, onRemind, remindLoading, remindData,
                 <th className="py-2 px-3 text-left">员工</th>
                 <th className="py-2 px-3 text-left">部门</th>
                 <th className="py-2 px-3 text-left">手机号</th>
-                <th className="py-2 px-3 text-center">待签数</th>
+                <th className="py-2 px-3 text-left">待签内容</th>
+                <th className="py-2 px-3 text-center">数量</th>
                 <th className="py-2 px-3 text-right">操作</th>
               </tr>
             </thead>
@@ -849,6 +850,21 @@ function PendingTab({ pendingList, loading, onRemind, remindLoading, remindData,
                       </td>
                       <td className="py-2 px-3 text-gray-500">{emp.department || '—'}</td>
                       <td className="py-2 px-3 text-gray-500">{emp.phone || '—'}</td>
+                      <td className="py-2 px-3">
+                        <div className="flex flex-wrap gap-1">
+                          {emp.pendingItems.map((item: any, idx: number) => {
+                            const sceneCfg = SCENE_CONFIG[item.scene]
+                            const methodCfg = SIGN_METHOD_CONFIG[item.signMethod] || SIGN_METHOD_CONFIG.ELECTRONIC
+                            return (
+                              <span key={idx} className={`inline-flex items-center gap-1 px-1.5 py-0.5 rounded text-xs ${sceneCfg ? sceneCfg.color : 'bg-gray-100 text-gray-600'}`} title={item.title}>
+                                {sceneCfg ? sceneCfg.label : item.title}
+                                <span className={`px-1 rounded text-[10px] ${methodCfg.color}`}>{methodCfg.label}</span>
+                                {item.type === 'contract' && <span className="text-[10px] text-gray-400">未登记</span>}
+                              </span>
+                            )
+                          })}
+                        </div>
+                      </td>
                       <td className="py-2 px-3 text-center">
                         <span className="inline-flex items-center justify-center px-2 py-0.5 rounded-full text-xs bg-yellow-100 text-yellow-700 font-medium">
                           {emp.pendingItems.length}