feat: 增强风险规则生成引擎与预算中心页面

后端拆分风险规则生成为解释器、语义分析、本体对齐等子模块，
优化模板执行和流程图生成，完善员工种子数据和导入逻辑，增强
报销单权限策略和草稿持久化，前端新增预算中心视图和趋势图
组件，重构审计页面和风险规则测试对话框交互，完善文档中心
和报销创建页面细节，补充单元测试覆盖。

web/src/views/TravelRequestDetailView.vue

@@ -88,7 +88,7 @@
 
         <div class="detail-grid">
           <section class="detail-left">
-            <article class="detail-card panel">
+            <article v-if="!isApplicationDocument" class="detail-card panel">
               <div class="detail-card-head">
                 <div>
                   <h3>附加说明</h3>
@@ -133,11 +133,14 @@
             <article class="detail-card panel">
               <div class="detail-card-head">
                 <div>
-                  <h3>{{ isApplicationDocument ? '申请预算' : '费用明细' }}</h3>
+                  <h3 class="detail-card-title-with-icon">
+                    <i v-if="isApplicationDocument" class="mdi mdi-file-document-outline"></i>
+                    <span>{{ isApplicationDocument ? '申请详情' : '费用明细' }}</span>
+                  </h3>
                   <p>
                     {{
                       isApplicationDocument
-                        ? '展示本次费用申请的预计金额，提交后纳入预算管理口径。'
+                        ? '展示本次申请的事实信息、职级规则测算和用户预估费用。'
                         : isTravelRequest
                           ? '按出行时间逐笔核对票据与差旅规则。'
                           : '按业务发生时间逐笔核对票据、用途说明与 AI 识别结果。'
@@ -162,13 +165,42 @@
                 </div>
               </div>
 
-              <div v-if="isApplicationDocument" class="detail-note readonly">
-                <p>
-                  预计总费用：{{ request.amountDisplay }}。该金额用于领导审批和预算管理，无需补充任何报销票据。
-                </p>
+              <div v-if="isApplicationDocument" class="application-detail-facts">
+                <div
+                  v-for="item in applicationDetailFactItems"
+                  :key="item.key"
+                  class="application-detail-fact"
+                  :class="{ highlight: item.highlight, emphasis: item.emphasis }"
+                >
+                  <span>{{ item.label }}</span>
+                  <strong>{{ item.value }}</strong>
+                </div>
               </div>
 
-              <div v-else class="detail-expense-table">
+              <div v-if="showApplicationLeaderOpinion" class="application-leader-opinion">
+                <div class="application-leader-opinion-head">
+                  <span><i class="mdi mdi-account-tie-outline"></i>领导意见</span>
+                  <strong v-if="leaderApprovalReadonlyMeta">{{ leaderApprovalReadonlyMeta }}</strong>
+                </div>
+                <div v-if="showApplicationLeaderOpinionInput" class="leader-approval-card inline-leader-opinion">
+                  <textarea
+                    v-model="leaderOpinion"
+                    maxlength="500"
+                    :required="requiresApprovalOpinion"
+                    :placeholder="approvalOpinionPlaceholder"
+                    :aria-label="approvalOpinionTitle"
+                  ></textarea>
+                  <div class="leader-opinion-meta">
+                    <span>{{ approvalOpinionHint }}</span>
+                    <strong>{{ leaderOpinion.length }}/500</strong>
+                  </div>
+                </div>
+                <div v-else class="detail-note readonly application-leader-opinion-display">
+                  <p>{{ leaderApprovalReadonlyText }}</p>
+                </div>
+              </div>
+
+              <div v-if="!isApplicationDocument" class="detail-expense-table">
                 <table>
                   <thead>
                     <tr>
@@ -452,6 +484,7 @@
               <textarea
                 v-model="leaderOpinion"
                 maxlength="500"
+                :required="requiresApprovalOpinion"
                 :placeholder="approvalOpinionPlaceholder"
                 :aria-label="approvalOpinionTitle"
               ></textarea>
@@ -479,7 +512,7 @@
             {{ submitBusy ? '提交中' : '提交审批' }}
           </button>
         </div>
-        <div v-else-if="canReturnRequest || canApproveRequest || canManageCurrentClaim" class="approval-action-group" aria-label="单据管理操作">
+        <div v-else-if="canReturnRequest || canApproveRequest || canDeleteRequest" class="approval-action-group" aria-label="单据管理操作">
           <button
             v-if="canReturnRequest"
             class="return-action"
@@ -498,10 +531,10 @@
             @click="handleApproveRequest"
           >
             <i class="mdi mdi-check-circle-outline"></i>
-            {{ approveBusy ? '通过中' : '审批通过' }}
+            {{ approveBusy ? approveBusyLabel : approveActionLabel }}
           </button>
           <button
-            v-if="canManageCurrentClaim"
+            v-if="canDeleteRequest"
             class="reject-action"
             type="button"
             :disabled="actionBusy"
@@ -750,11 +783,11 @@
       :open="approveConfirmDialogOpen"
       :badge="approvalConfirmBadge"
       badge-tone="info"
-      :title="`确认通过 ${request.id} 吗？`"
+      :title="approveConfirmTitle"
       :description="approvalConfirmDescription"
       cancel-text="返回核对"
-      confirm-text="确认通过"
-      busy-text="通过中..."
+      :confirm-text="approveConfirmText"
+      :busy-text="approveBusyText"
       confirm-tone="primary"
       confirm-icon="mdi mdi-check-circle-outline"
       :busy="approveBusy"
@@ -771,7 +804,7 @@
           <strong>{{ request.node }}</strong>
         </div>
         <div class="submit-confirm-row">
-          <span>下一节点</span>
+          <span>{{ approvalConfirmSummaryLabel }}</span>
           <strong>{{ approvalNextStage }}</strong>
         </div>
         <div class="submit-confirm-row">
@@ -784,7 +817,7 @@
     <ReturnReasonDialog
       :open="returnDialogOpen"
       :title="`确认退回 ${request.id} 吗？`"
-      description="退回后该单据会回到待提交状态，申请人需要调整后重新提交并再次经过 AI 预审。"
+      :description="returnDialogDescription"
       :busy="returnBusy"
       @close="closeReturnDialog"
       @confirm="confirmReturnRequest"