fix(aihr): remove fake case sample wording

frontend/src/views/knowledge/cases.vue

@@ -69,8 +69,8 @@
           </div>
         </div>
         <div class="sample-card" :class="{ active: stored }">
-          <strong>视频样片</strong>
-          <p>{{ apiSampleHint || '案例转视频本期不现场调用视频生成；当前只展示案例入库结果。' }}</p>
+          <strong>复用状态</strong>
+          <p>{{ stored ? apiSampleHint || '案例已入库，可用于训练复用。' : '案例入库后进入训练复用；本期不展示视频样片。' }}</p>
         </div>
       </article>
     </section>
@@ -161,10 +161,10 @@ const pipeline = computed(() => [
     state: stored.value ? 'done' : reviewed.value ? 'active' : 'todo'
   },
   {
-    name: '样片展示',
-    count: '0 条',
-    note: apiSampleHint.value || '未接视频样片',
-    state: 'todo'
+    name: '培训复用',
+    count: stored.value ? '1 条' : '0 条',
+    note: stored.value ? apiSampleHint.value || '已入库' : '未入库',
+    state: stored.value ? 'done' : 'todo'
   }
 ]);