fix(classification): avoid duplicate uncategorized label

src/components/classification/__tests__/ClassificationCategoryEditor.spec.ts

@@ -189,6 +189,18 @@ describe('ClassificationCategoryEditor', () => {
     await waitFor(() => expect(events.updateFallbacks).toHaveBeenCalledWith({ 音乐: 'music.lossless' }))
   })
 
+  it('默认分类选项不会重复显示路径中的分类名称', async () => {
+    const user = userEvent.setup()
+    await renderEditor({
+      categories: [createCategory('tv.uncategorized', '电视剧', '未分类', ['未分类', '通用'])],
+    })
+
+    await user.click(screen.getByRole('combobox', { name: '电视剧默认分类' }))
+
+    expect(await screen.findByRole('option', { name: '未分类 · 通用' })).toBeInTheDocument()
+    expect(screen.queryByRole('option', { name: '未分类 · 未分类 / 通用' })).not.toBeInTheDocument()
+  })
+
   it('路径超过最大深度时保留草稿并拒绝发出分类更新', async () => {
     const user = userEvent.setup()
     const { events } = await renderEditor({ maxDepth: 2 })

src/utils/__tests__/mediaClassification.spec.ts

@@ -27,6 +27,16 @@ describe('formatClassificationCategoryOptionTitle', () => {
     ).toBe('华语电影 · 电影')
   })
 
+  it('removes a repeated category name from any path segment', () => {
+    expect(
+      formatClassificationCategoryOptionTitle({
+        id: 'tv.uncategorized',
+        name: '未分类',
+        path: ['未分类', '通用'],
+      }),
+    ).toBe('未分类 · 通用')
+  })
+
   it('can preserve a caller-specific path separator and stable ID', () => {
     expect(
       formatClassificationCategoryOptionTitle(

src/utils/mediaClassification.ts

@@ -14,13 +14,12 @@ interface ClassificationCategoryOptionTitleOptions {
   pathSeparator?: string
 }
 
-/** 生成分类选择器标题，避免分类名与路径末级名称重复显示。 */
+/** 生成分类选择器标题，避免分类名与路径中的同名段重复显示。 */
 export function formatClassificationCategoryOptionTitle(
   category: Pick<ClassificationCategory, 'name' | 'path' | 'id'>,
   options: ClassificationCategoryOptionTitleOptions = {},
 ): string {
-  const pathSegments = [...category.path]
-  while (pathSegments[pathSegments.length - 1] === category.name) pathSegments.pop()
+  const pathSegments = category.path.filter(segment => segment !== category.name)
   const path = pathSegments.join(options.pathSeparator ?? ' / ')
   const displayPath = path || (category.path.length ? '' : (options.emptyPathLabel ?? ''))
   const parts = [category.name, displayPath]