fix: 修复知识库失败批次继续与重分块

- 统一继续和重试逻辑，恢复全部失败明细

- 向量化失败时废弃旧快照并重新分块

- 增加 BGE-M3 分块硬上限与索引写入结果校验

easyflow-ui-admin/app/src/views/ai/documentCollection/DocumentImportBatchStatus.test.ts

@@ -79,4 +79,78 @@ describe('documentImportBatchStatus', () => {
     );
     wrapper.unmount();
   });
+
+  it('部分失败批次按 failedCount 继续并发送统一批次参数', async () => {
+    const failedBatch = {
+      batchId: 'batch-1',
+      completedCount: 1,
+      failedCount: 1,
+      importMode: 'AUTO',
+      pendingCount: 0,
+      processingCount: 0,
+      progressPercent: 100,
+      retryableFailedCount: 0,
+      skippedCount: 0,
+      status: 'PARTIAL_SUCCEEDED',
+      totalCount: 2,
+    };
+    apiMocks.get.mockResolvedValue({
+      data: failedBatch,
+      errorCode: 0,
+    });
+    apiMocks.post.mockResolvedValue({
+      data: {
+        ...failedBatch,
+        failedCount: 0,
+        pendingCount: 1,
+        progressPercent: 50,
+        status: 'RUNNING',
+      },
+      errorCode: 0,
+    });
+
+    const wrapper = mount(DocumentImportBatchStatus, {
+      props: {
+        knowledgeId: 'knowledge-1',
+        manageable: true,
+      },
+    });
+    await flushPromises();
+
+    const continueButton = wrapper.find('.batch-status__continue');
+    expect(continueButton.exists()).toBe(true);
+    await continueButton.trigger('click');
+    await flushPromises();
+
+    expect(apiMocks.post).toHaveBeenCalledWith(
+      '/api/v1/document/import/batch/continue',
+      {
+        batchId: 'batch-1',
+        knowledgeId: 'knowledge-1',
+      },
+    );
+    wrapper.unmount();
+  });
+
+  it('没有失败项时不使用旧兼容计数显示继续按钮', async () => {
+    apiMocks.get.mockResolvedValue({
+      data: {
+        ...createBatch('COMPLETED', 2),
+        retryableFailedCount: 1,
+        status: 'PARTIAL_SUCCEEDED',
+      },
+      errorCode: 0,
+    });
+
+    const wrapper = mount(DocumentImportBatchStatus, {
+      props: {
+        knowledgeId: 'knowledge-1',
+        manageable: true,
+      },
+    });
+    await flushPromises();
+
+    expect(wrapper.find('.batch-status__continue').exists()).toBe(false);
+    wrapper.unmount();
+  });
 });