fix

src/composables/useTeachingBook.test.ts

@@ -18,6 +18,42 @@ function createBookWithDesign(filename = '1.md'): { data: TeachingBook; design:
   return { data, design }
 }
 
+function generatedMarkdownWithAdditionalSection(topic: string): string {
+  return [
+    `# ${topic} 教学设计`,
+    '| | |',
+    '|:---|:---|',
+    `| **课题** | **${topic}** |`,
+    '| **课时** | 1课时（40分钟） |',
+    '| **教学目标** | **知识目标**：理解概念。<br>**技能目标**：完成任务。<br>**素养目标**：规范表达。 |',
+    '| **教学重难点** | **重点**：任务流程。<br>**难点**：问题定位。 |',
+    '| **教学资源准备** | 机房、示例文件。 |',
+    '',
+    '## 教学过程',
+    '',
+    '| 教学环节 | 教学内容 | 教师活动 | 学生活动 | 设计意图 |',
+    '|:---|:---|:---|:---|:---|',
+    '| **1. 导入**<br>（5分钟） | 引出任务。 | **情境导入**<br>展示案例。 | **观察思考**<br>回答问题。 | 明确目标。 |',
+    '',
+    '## 板书设计',
+    '',
+    '```text',
+    `${topic}`,
+    '```',
+    '',
+    '## 教学成效与反思',
+    '',
+    '| | |',
+    '|:---|:---|',
+    '| **教学成效** | 学生完成任务。 |',
+    '| **教学反思** | 后续加强练习。 |',
+    '',
+    '## 附加说明',
+    '',
+    '这是模型额外生成的内容。',
+  ].join('\n')
+}
+
 describe('useTeachingBook', () => {
   beforeEach(() => {
     vi.clearAllMocks()
@@ -140,6 +176,25 @@ describe('useTeachingBook', () => {
     expect(store.book.value.selectedId).toBe(store.book.value.designs[0]?.id)
   })
 
+  it('generateLesson discards unclassified additional content from AI output', async () => {
+    mockGetBook(createEmptyBook())
+    vi.mocked(booksApi.generateLesson).mockResolvedValue({
+      filename: 'css-flex.md',
+      markdown: generatedMarkdownWithAdditionalSection('CSS 弹性布局'),
+    })
+
+    const store = useTeachingBook('b1')
+    await flushPromises()
+
+    const result = await store.generateLesson('CSS 弹性布局')
+
+    expect(result).toEqual({ ok: true })
+    expect(store.book.value.designs[0]?.additionalContent).toBe('')
+    expect(store.book.value.designs[0]?.warnings).not.toContainEqual(
+      expect.objectContaining({ code: 'unclassified-content' }),
+    )
+  })
+
   it('generateLesson returns an error when the API call fails', async () => {
     mockGetBook(createEmptyBook())
     vi.mocked(booksApi.generateLesson).mockRejectedValue(new Error('Deepseek 请求失败。'))

src/composables/useTeachingBook.ts

@@ -244,10 +244,18 @@ export function useTeachingBook(bookId: string): TeachingBookStore {
     touch()
   }
 
+  function removeGeneratedAdditionalContent(design: TeachingDesign): TeachingDesign {
+    design.additionalContent = ''
+    design.warnings = design.warnings.filter((warning) => warning.code !== 'unclassified-content')
+    return design
+  }
+
   async function generateLesson(topic: string): Promise<GenerateLessonResult> {
     try {
       const result = await booksApi.generateLesson(topic)
-      const design = parseTeachingDesign(result.filename, result.markdown)
+      const design = removeGeneratedAdditionalContent(
+        parseTeachingDesign(result.filename, result.markdown),
+      )
       book.value.designs.push(design)
       book.value.selectedId = design.id
       touch()
@@ -299,7 +307,9 @@ export function useTeachingBook(bookId: string): TeachingBookStore {
 
         try {
           const result = await booksApi.generateLesson(topic)
-          results[index] = parseTeachingDesign(result.filename, result.markdown)
+          results[index] = removeGeneratedAdditionalContent(
+            parseTeachingDesign(result.filename, result.markdown),
+          )
           appendReadyLessons()
         } catch (error) {
           firstError = error instanceof Error ? error.message : '生成失败。'
@@ -322,7 +332,9 @@ export function useTeachingBook(bookId: string): TeachingBookStore {
     const topic = existing.originalFilename.replace(/\.md$/i, '')
     try {
       const result = await booksApi.generateLesson(topic)
-      const newDesign = parseTeachingDesign(result.filename, result.markdown)
+      const newDesign = removeGeneratedAdditionalContent(
+        parseTeachingDesign(result.filename, result.markdown),
+      )
       const index = book.value.designs.findIndex((d) => d.id === id)
       if (index !== -1) {
         book.value.designs.splice(index, 1, newDesign)