refactor(types): centralize type definitions in shared types file

Move all interface and type definitions to src/types/index.ts to reduce code duplication and improve maintainability. This includes types for components, blog posts, personal info, and localization.

src/i18n/utils.ts

@@ -1,11 +1,9 @@
 // src/i18n/utils.ts
 import { ui, defaultLang, languages } from './ui';
+import { type Lang, type UiKeys } from '@/types';
 
-export type Lang = keyof typeof languages;
-
-// 简化类型定义，直接使用字符串类型
-// 这样可以兼容点符号键，同时避免复杂的类型推导问题
-export type UiKeys = string;
+// 重新导出类型，以保持向后兼容性
+export type { Lang, UiKeys };
 
 
 export function useTranslations(lang: Lang | undefined) {