优化

src/shared/components/DataTable.test.ts

@@ -163,4 +163,18 @@ describe('DataTable column preferences', () => {
     expect(toolbarActions.find('.data-table__utility-actions').exists()).toBe(true)
     expect(toolbarActions.find('button[aria-label="列设置"]').exists()).toBe(true)
   })
+
+  it('can hide column settings for compact tables without leaving an empty toolbar', () => {
+    const wrapper = shallowMount(DataTable, {
+      props: { data: [], columns: configurableColumns, preferenceKey: 'summary-table', showColumnSettings: false },
+      global: {
+        provide: { [UI_PREFERENCE_SCOPE as symbol]: computed(() => 'user-1') },
+        stubs: { ElTable: TableStub, ElTableColumn: ColumnStub, ElButton: ButtonStub, ElPopover: PopoverStub },
+        directives: { loading: {} },
+      },
+    })
+
+    expect(wrapper.find('button[aria-label="列设置"]').exists()).toBe(false)
+    expect(wrapper.find('.data-table__toolbar').exists()).toBe(false)
+  })
 })