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/assets/styles/views/travel-reimbursement-create-view.css

@@ -740,6 +740,38 @@
   color: #475569;
 }
 
+.message-answer-markdown :deep(.markdown-attachment-card) {
+  margin: 10px 0 12px;
+  padding: 12px 14px;
+  border: 1px solid #dbe4ee;
+  border-left: 4px solid #2563eb;
+  border-radius: 8px;
+  background: #f8fafc;
+  color: #334155;
+}
+
+.message-answer-markdown :deep(.markdown-attachment-card + .markdown-attachment-card) {
+  margin-top: 12px;
+}
+
+.message-answer-markdown :deep(.markdown-attachment-card p) {
+  margin: 0;
+}
+
+.message-answer-markdown :deep(.markdown-attachment-card p:first-child) {
+  color: #0f172a;
+  font-weight: 820;
+}
+
+.message-answer-markdown :deep(.markdown-attachment-card ul) {
+  margin-top: 8px;
+  padding-left: 18px;
+}
+
+.message-answer-markdown :deep(.markdown-attachment-card li + li) {
+  margin-top: 4px;
+}
+
 .message-answer-markdown :deep(code) {
   padding: 2px 6px;
   border-radius: 6px;
@@ -766,6 +798,22 @@
   text-decoration: underline;
 }
 
+.message-answer-markdown :deep(.markdown-action-paragraph) {
+  margin-top: 34px;
+  color: #475569;
+}
+
+.message-answer-markdown :deep(.markdown-action-link) {
+  color: #2563eb;
+  font-weight: 850;
+  text-decoration-thickness: 1.5px;
+  text-underline-offset: 3px;
+}
+
+.message-answer-markdown :deep(.markdown-action-link:hover) {
+  color: #1d4ed8;
+}
+
 .message-answer-markdown :deep(.markdown-table-wrap) {
   width: 100%;
   max-width: 100%;
@@ -1237,6 +1285,71 @@
   font-weight: 700;
 }
 
+.expense-query-risk-row {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+  margin-top: 4px;
+}
+
+.expense-query-risk-chip {
+  max-width: 100%;
+  min-height: 24px;
+  display: inline-flex;
+  align-items: center;
+  gap: 5px;
+  padding: 0 8px;
+  border: 1px solid #fecaca;
+  border-radius: 999px;
+  background: #fff7ed;
+  color: #9a3412;
+  font: inherit;
+  font-size: 11px;
+  cursor: pointer;
+}
+
+.expense-query-risk-chip span,
+.expense-query-risk-chip em {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.expense-query-risk-chip span {
+  max-width: 86px;
+  color: #7c2d12;
+}
+
+.expense-query-risk-chip strong {
+  flex-shrink: 0;
+  font-weight: 850;
+}
+
+.expense-query-risk-chip em {
+  max-width: 120px;
+  font-style: normal;
+}
+
+.expense-query-risk-chip.high {
+  border-color: #fecaca;
+  background: #fef2f2;
+  color: #b91c1c;
+}
+
+.expense-query-risk-chip.medium,
+.expense-query-risk-chip.warning {
+  border-color: #fed7aa;
+  background: #fff7ed;
+  color: #c2410c;
+}
+
+.expense-query-risk-chip.low,
+.expense-query-risk-chip.info {
+  border-color: #bfdbfe;
+  background: #eff6ff;
+  color: #1d4ed8;
+}
+
 .expense-query-pager {
   display: flex;
   align-items: center;
@@ -1513,4 +1626,3 @@
   font-size: 13px;
   font-weight: 900;
 }
-