feat: 新增归档中心页面并完善知识库与报销查询能力

新增前端归档中心视图及相关工具函数，扩充知识库文档分类和
提取器支持多种格式，增强编排器报销查询的多维度检索，优
化本体规则和用户代理审核消息，前端完善报销创建和审批详
情交互细节，补充单元测试覆盖。

web/src/views/TravelRequestDetailView.vue

@@ -97,20 +97,11 @@
               </div>
               <div v-if="canEditDetailNote" class="detail-note-editor">
                 <textarea
-                  v-model="detailNoteEditor"
+                  v-model="detailNoteEditorView"
                   maxlength="500"
                   placeholder="例如：去北京客户现场出差，拜访 XX 客户并处理项目验收事项"
                   aria-label="附加说明"
                 ></textarea>
-                <div v-if="detailNoteTags.length" class="detail-note-tag-list" aria-label="附加说明风险标签">
-                  <span
-                    v-for="tag in detailNoteTags"
-                    :key="tag"
-                    :class="['risk-note-tag', resolveRiskTagClass(tag)]"
-                  >
-                    {{ tag }}
-                  </span>
-                </div>
                 <div class="detail-note-editor-meta">
                   <span>仅草稿待提交状态可编辑，提交后将作为明确说明展示。</span>
                   <div class="detail-note-actions">
@@ -136,15 +127,6 @@
               </div>
               <div v-else class="detail-note readonly">
                 <p>{{ detailNote }}</p>
-                <div v-if="detailNoteTags.length" class="detail-note-tag-list" aria-label="附加说明风险标签">
-                  <span
-                    v-for="tag in detailNoteTags"
-                    :key="tag"
-                    :class="['risk-note-tag', resolveRiskTagClass(tag)]"
-                  >
-                    {{ tag }}
-                  </span>
-                </div>
               </div>
             </article>
 
@@ -178,8 +160,8 @@
                 <table>
                   <thead>
                     <tr>
-                      <th class="col-time">时间</th>
                       <th class="col-filled-at">填写时间</th>
+                      <th class="col-time">发生时间</th>
                       <th class="col-type">费用项目</th>
                       <th class="col-desc">说明</th>
                       <th class="col-amount">金额</th>
@@ -190,6 +172,10 @@
                   <tbody>
                     <template v-for="item in expenseItems" :key="item.id">
                       <tr :class="{ 'system-generated-row': item.isSystemGenerated }">
+                        <td class="expense-filled-at col-filled-at">
+                          <strong>{{ item.filledAt }}</strong>
+                          <span>条款填写时间</span>
+                        </td>
                         <td :class="['expense-time col-time', { 'has-major-risk': isMajorExpenseRisk(item) }]">
                           <i
                             v-if="isMajorExpenseRisk(item)"
@@ -208,10 +194,6 @@
                             <span>{{ item.dayLabel }}</span>
                           </template>
                         </td>
-                        <td class="expense-filled-at col-filled-at">
-                          <strong>{{ item.filledAt }}</strong>
-                          <span>条款填写时间</span>
-                        </td>
                         <td class="expense-type col-type">
                           <template v-if="editingExpenseId === item.id">
                             <div class="cell-editor">
@@ -405,11 +387,11 @@
               </div>
             </article>
 
-            <article v-if="isEditableRequest" class="detail-card panel validation-card">
+            <article v-if="showAiAdvicePanel" class="detail-card panel validation-card">
               <div class="validation-head">
                 <div>
-                  <h3>AI建议</h3>
-                  <p>按建议顺序补齐信息或处理风险后，再发起审批。</p>
+                  <h3>{{ aiAdviceTitle }}</h3>
+                  <p>{{ aiAdviceHint }}</p>
                 </div>
                 <span :class="['validation-pill', aiAdvice.tone]">{{ aiAdvice.badge }}</span>
               </div>
@@ -434,15 +416,6 @@
                         <span>{{ card.label }}</span>
                         <strong>{{ card.title }}</strong>
                       </div>
-                      <div v-if="card.tags?.length" class="risk-card-tag-list" aria-label="风险标签">
-                        <span
-                          v-for="tag in card.tags"
-                          :key="tag"
-                          :class="['risk-note-tag', resolveRiskTagClass(tag)]"
-                        >
-                          {{ tag }}
-                        </span>
-                      </div>
                       <p class="risk-advice-point">{{ card.risk }}</p>
                       <div class="risk-advice-meta">
                         <div>
@@ -733,15 +706,6 @@
             <strong>{{ currentSubmitRiskWarning.title }}</strong>
           </div>
           <p>{{ currentSubmitRiskWarning.risk }}</p>
-          <div class="risk-card-tag-list" aria-label="风险标签">
-            <span
-              v-for="tag in currentSubmitRiskWarning.tags"
-              :key="tag"
-              :class="['risk-note-tag', resolveRiskTagClass(tag)]"
-            >
-              {{ tag }}
-            </span>
-          </div>
           <textarea
             v-model="riskOverrideReasons[currentSubmitRiskWarning.id]"
             maxlength="160"