feat: enrich question insights classification

ai_knowledge_base_v2/apps/admin-web/src/App.vue

@@ -1584,8 +1584,13 @@ function formatRecordDateTime(value: string, boundary: "start" | "end") {
                     </div>
                   </header>
                   <div class="question-insight-tags">
+                    <el-tag size="small" effect="plain">{{ cluster.categoryLabel }}</el-tag>
+                    <el-tag v-if="cluster.needsKnowledgeFollowUp" size="small" type="warning" effect="plain">需补知识/查召回</el-tag>
+                    <el-tag v-if="cluster.noHitCount" size="small" type="danger" effect="plain">无命中 {{ cluster.noHitCount }}</el-tag>
+                    <el-tag v-if="cluster.failedCount" size="small" type="danger" effect="dark">失败 {{ cluster.failedCount }}</el-tag>
                     <el-tag v-for="term in cluster.topTerms" :key="term" size="small" type="success" effect="plain">{{ term }}</el-tag>
                   </div>
+                  <p class="question-insight-action">{{ cluster.suggestedAction }}</p>
                   <el-collapse>
                     <el-collapse-item title="查看相似问法和原始样例" :name="cluster.normalized">
                       <div class="question-variants">

ai_knowledge_base_v2/apps/admin-web/src/styles.css

@@ -1956,6 +1956,16 @@ textarea {
   margin: 12px 0;
 }
 
+.question-insight-action {
+  margin: 0 0 12px;
+  padding: 10px 12px;
+  border-radius: 10px;
+  background: #f6faf8;
+  color: #50655e;
+  font-size: 13px;
+  line-height: 1.6;
+}
+
 .question-variants {
   display: flex;
   flex-wrap: wrap;

ai_knowledge_base_v2/apps/admin-web/src/types/api.ts

@@ -567,9 +567,16 @@ export interface QuestionInsightCluster {
   rank: number;
   title: string;
   normalized: string;
+  category: string;
+  categoryLabel: string;
   count: number;
   userCount: number;
   sessionCount: number;
+  aiRequestCount: number;
+  noHitCount: number;
+  failedCount: number;
+  needsKnowledgeFollowUp: boolean;
+  suggestedAction: string;
   firstSeenAt: string;
   lastSeenAt: string;
   topTerms: string[];