feat: 新增数字员工管理页面与工作台首页重构

后端优化 agent 资产种子初始化和常量配置，前端新增数字员工
视图和调度对话框组件，重构个人工作台首页布局和洞察面板，
完善审计页面数字员工详情和运行时模型，优化侧边栏导航和图
标配置，新增工作台摘要和工作台数据模块，补充单元测试。

web/src/assets/styles/views/audit-view-part2.css

@@ -1810,6 +1810,40 @@
   background: #ffffff;
 }
 
+.digital-worker-source-card {
+  min-height: 0;
+}
+
+.digital-worker-source-card .card-head {
+  align-items: center;
+}
+
+.digital-worker-source-editor {
+  width: 100%;
+  min-height: 360px;
+  resize: vertical;
+  border: 1px solid #dbe4ef;
+  border-radius: 8px;
+  padding: 14px 16px;
+  background: #0f172a;
+  color: #e2e8f0;
+  font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
+  font-size: 12.5px;
+  line-height: 1.7;
+  outline: none;
+}
+
+.digital-worker-source-editor:focus {
+  border-color: #2563eb;
+  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.14);
+}
+
+.digital-worker-source-editor[readonly] {
+  color: #cbd5e1;
+  background: #1e293b;
+  cursor: default;
+}
+
 @media (max-width: 760px) {
   .risk-rule-create-form,
   .json-risk-meta-grid {

web/src/assets/styles/views/digital-employees-view.css

@@ -0,0 +1,94 @@
+.digital-employees-view {
+  height: 100%;
+  min-height: 0;
+}
+
+.digital-employees-list {
+  height: 100%;
+}
+
+.digital-employees-list .table-wrap {
+  min-height: 0;
+}
+
+.digital-employees-table {
+  min-width: 1060px;
+  table-layout: fixed;
+}
+
+.digital-employees-table .col-skill { width: 27%; }
+.digital-employees-table .col-schedule { width: 16%; }
+.digital-employees-table .col-mode { width: 12%; }
+.digital-employees-table .col-skill-type { width: 11%; }
+.digital-employees-table .col-status { width: 11%; }
+.digital-employees-table .col-enabled { width: 11%; }
+.digital-employees-table .col-updated { width: 12%; }
+
+.digital-employees-table td {
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.digital-employees-table tbody tr {
+  cursor: pointer;
+}
+
+.digital-refresh-action i {
+  font-size: 16px;
+}
+
+.skill-type-pill {
+  border-color: #dbeafe;
+  background: #eff6ff;
+  color: #1d4ed8;
+}
+
+.digital-employee-detail {
+  height: 100%;
+}
+
+.digital-employee-detail .detail-scroll {
+  min-height: 0;
+  overflow: auto;
+}
+
+.digital-employee-detail-actions .detail-action-group {
+  display: flex;
+  align-items: center;
+  justify-content: flex-end;
+  gap: 10px;
+  flex-wrap: wrap;
+}
+
+.digital-employee-detail-actions .success-action {
+  border-color: var(--success-line);
+  background: var(--success-soft);
+  color: var(--success-hover);
+}
+
+.digital-employee-detail-actions .enable-action.is-on {
+  border-color: #fed7aa;
+  background: #fff7ed;
+  color: #ea580c;
+}
+
+@media (max-width: 980px) {
+  .digital-employees-table {
+    min-width: 1040px;
+  }
+
+  .digital-employee-detail-actions {
+    align-items: stretch;
+    flex-direction: column;
+  }
+
+  .digital-employee-detail-actions .detail-action-group {
+    justify-content: stretch;
+  }
+
+  .digital-employee-detail-actions .detail-action-group button {
+    flex: 1 1 0;
+    justify-content: center;
+  }
+}

web/src/assets/styles/views/policies-view.css

@@ -258,7 +258,7 @@
 
 table {
   width: 100%;
-  min-width: 690px;
+  min-width: 780px;
   border-collapse: collapse;
 }
 
@@ -365,10 +365,9 @@ th {
 .state-cell {
   display: grid;
   justify-items: center;
-  gap: 6px;
 }
 
-.state-time {
+.ingest-time-cell {
   color: #64748b;
   font-size: 11px;
   line-height: 1.4;