fix(ai): 收紧AI任务类型入库规则

apps/web/lib/task-category.test.ts

@@ -8,6 +8,7 @@ import {
   getDefaultCategoryByGroup,
   ensureTaskCategoryByName,
   normalizeTaskCategories,
+  resolveAiTaskCategoryByName,
   resolveCategoryIdFromCode,
 } from './task-category';
 
@@ -68,3 +69,25 @@ test('creates non-system category for missing AI task type name', () => {
   assert.ok(result.category.id.startsWith('cat-ai-'));
   assert.equal(result.categories.at(-1)?.id, result.category.id);
 });
+
+test('does not create document-specific testing type when auto creation is disabled', () => {
+  const result = resolveAiTaskCategoryByName(PRESET_CATEGORIES, '排行榜测试', 'testing', {
+    allowCreate: false,
+    fallbackCode: 'test_data_consistency',
+  });
+
+  assert.equal(result.created, false);
+  assert.equal(result.category.code, 'test_data_consistency');
+  assert.equal(result.categories.length, PRESET_CATEGORIES.length);
+});
+
+test('keeps testing fallback within the testing category group', () => {
+  const result = resolveAiTaskCategoryByName(PRESET_CATEGORIES, '排行榜测试', 'testing', {
+    allowCreate: false,
+    fallbackCode: 'frontend_development',
+  });
+
+  assert.equal(result.created, false);
+  assert.equal(result.category.id, DEFAULT_TEST_CATEGORY_ID);
+  assert.equal(result.category.group, 'testing');
+});