feat(locales): 优化版权信息结构

- 将版权年份分离为单独字段 copyrightYear
- 修改版权字段使用版权年份引用，提高维护性
- 更新中英文版权内容保持一致格式

locales/en.ts

@@ -142,9 +142,7 @@ export default {
     developers: 'Certified Experts',
     aiApps: 'Member Organizations',
     uptime: 'Suggestions',
-    copyrightSymbol: '©',
-    copyrightYear: ' {{ year }} ',
-    copyright: '@:login.copyrightSymbol@:login.copyrightYear Guangxi Decision Consulting Center · Professional · Authoritative · Efficient',
+
 
     // Right form
     aiAppPlatform: 'Guangxi Decision Consulting Network',