feat(breadcrumbs): implement reusable breadcrumbs component and update usage

refactor(chunk): enhance chunk list with bulk operations and improved UI

src/pages/knowledge/testing.tsx

@@ -236,7 +236,21 @@ function KnowledgeBaseTesting() {
     <Container maxWidth="lg" sx={{ py: 4 }}>
 
       {/* 面包屑导航 */}
-      <KnowledgeBreadcrumbs knowledge={knowledgeDetail} />
+      <KnowledgeBreadcrumbs 
+        kbItems={[
+          {
+            label: '知识库',
+            path: '/knowledge'
+          },
+          {
+            label: knowledgeDetail?.name || '知识库详情',
+            path: `/knowledge/${id}`
+          },
+          {
+            label: '测试'
+          }
+        ]}
+      />
 
       <Box sx={{ mb: 3 }}>
         <Typography variant="h4" gutterBottom>