fix: 调整翻译条目筛选逻辑

- 将输出由数组改为单个对象

src/helper/collection.test.ts

@@ -23,15 +23,11 @@ test('filterTranslations - basic functionality', () => {
     expect(result).toEqual([
         {
             id: 1,
-            translations: [
+            translations: { languages_code: 'en-US', name: 'English Name1' }
-                { languages_code: 'en-US', name: 'English Name1' }
-            ]
         },
         {
             id: 2,
-            translations: [
+            translations: { languages_code: 'en-US', name: 'English Name2' }
-                { languages_code: 'en-US', name: 'English Name2' }
-            ]
         }
     ]);
 });
@@ -50,7 +46,7 @@ test('filterTranslations - no matching language', () => {
     expect(result).toEqual([
         {
             id: 1,
-            translations: []
+            translations: {}
         }
     ]);
 });
@@ -85,9 +81,7 @@ test('filterTranslations - translations in deeper structure', () => {
         {
             id: 1,
             details: {
-                translations: [
+                translations: { languages_code: 'zh-CN', name: '中文名称1' }
-                    { languages_code: 'zh-CN', name: '中文名称1' }
-                ]
             }
         }
     ]);

src/helper/collection.ts

@@ -33,15 +33,11 @@ type Translation = {
  * // [
  * //  {
  * //   id: 1,
- * //   translations: [
+ * //   translations: { languages_code: 'zh-CN', name: '中文名称1' }
- * //    { languages_code: 'zh-CN', name: '中文名称1' }
- * //   ]
  * //  },
  * //  {
  * //   id: 2,
- * //   translations: [
+ * //   translations: { languages_code: 'zh-CN', name: '中文名称2' }
- * //    { languages_code: 'zh-CN', name: '中文名称2' }
- * //   ]
  * //  }
  * // ]
  */
@@ -73,7 +69,13 @@ export function filterTranslations<T>(data: T[], langCode: string): T[] {
                         }
                         return false;
                     });
-                    result[key] = filtered;
+
+                    // 展平结果为单个对象或空对象
+                    if (filtered.length <= 1) {
+                        result[key] = filtered[0] || {};
+                    } else {
+                        result[key] = filtered;
+                    }
                 } else {
                     // 递归处理其他字段
                     result[key] = deepFilter(value);