feat: 新增员工行为画像算法与费用风险标签体系

后端新增员工行为画像算法模块，支持标签规则引擎和评分计算，
完善员工模型、银行信息、序列化和导入逻辑，优化报销审批流
和工作流常量，增强 Hermes 同步和知识同步能力，前端新增费
用画像详情弹窗、雷达图和风险卡片组件，完善登录页和工作台
样式，优化文档中心和归档中心交互，补充单元测试。

web/src/assets/styles/components/top-bar.css

@@ -288,6 +288,98 @@
   color: #dc2626;
 }
 
+.topbar-toolset {
+  display: inline-flex;
+  align-items: center;
+  justify-content: flex-end;
+  gap: 18px;
+  min-width: 0;
+}
+
+.topbar-icon-btn {
+  position: relative;
+  width: 34px;
+  height: 34px;
+  display: inline-grid;
+  place-items: center;
+  padding: 0;
+  border: 0;
+  border-radius: 999px;
+  background: transparent;
+  color: #111827;
+  font-size: 23px;
+  line-height: 1;
+  transition:
+    color 160ms var(--ease),
+    background 160ms var(--ease);
+}
+
+.topbar-icon-btn:hover {
+  background: var(--theme-primary-light-9);
+  color: var(--theme-primary-active);
+}
+
+.notification-badge {
+  position: absolute;
+  top: 2px;
+  right: 1px;
+  min-width: 13px;
+  height: 13px;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  padding: 0 3px;
+  border: 2px solid #fff;
+  border-radius: 999px;
+  background: #ef4444;
+  color: #fff;
+  font-size: 8px;
+  font-weight: 850;
+  line-height: 1;
+  box-shadow: 0 5px 10px rgba(239, 68, 68, .22);
+}
+
+.company-switcher {
+  max-width: min(220px, 28vw);
+  height: 38px;
+  display: inline-flex;
+  align-items: center;
+  gap: 8px;
+  padding: 0 14px 0 16px;
+  border: 1px solid #edf1f5;
+  border-radius: 999px;
+  background: #fff;
+  color: #111827;
+  box-shadow:
+    0 1px 2px rgba(15, 23, 42, .04),
+    inset 0 1px 0 rgba(255, 255, 255, .92);
+  font-size: 13px;
+  font-weight: 700;
+  white-space: nowrap;
+  transition:
+    border-color 160ms var(--ease),
+    box-shadow 160ms var(--ease),
+    color 160ms var(--ease);
+}
+
+.company-switcher:hover {
+  border-color: rgba(var(--theme-primary-rgb, 58, 124, 165), .26);
+  color: var(--theme-primary-active);
+  box-shadow: 0 6px 16px rgba(var(--theme-primary-rgb, 58, 124, 165), .08);
+}
+
+.company-switcher span {
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.company-switcher .mdi {
+  flex: 0 0 auto;
+  color: #64748b;
+  font-size: 16px;
+}
+
 .kpi-chip {
   display: grid;
   grid-template-columns: auto auto;
@@ -370,6 +462,7 @@
   .top-actions,
   .search-wrap,
   .search-wrap.wide,
+  .topbar-toolset,
   .detail-alert-strip,
   .month-chip,
   .qa-filter,
@@ -381,6 +474,10 @@
     justify-content: stretch;
   }
 
+  .topbar-toolset {
+    justify-content: flex-end;
+  }
+
   .range-shell {
     flex: 1;
   }
@@ -400,6 +497,12 @@
   }
 }
 
+@media (max-width: 760px) {
+  .title-group {
+    padding-right: 56px;
+  }
+}
+
 @media (max-width: 640px) {
   .topbar {
     gap: 14px;
@@ -427,6 +530,16 @@
     white-space: nowrap;
   }
 
+  .topbar-toolset {
+    gap: 10px;
+  }
+
+  .company-switcher {
+    flex: 1 1 auto;
+    max-width: none;
+    justify-content: space-between;
+  }
+
   .range-combo {
     display: grid;
     gap: 8px;