style(frontend): 统一核心模块代码风格

- Composables: 优化 OAuth 相关 hooks 代码格式
- Stores: 规范状态管理模块格式
- Types: 统一类型定义格式
- Utils: 优化工具函数格式
- App.vue & style.css: 调整全局样式和主组件格式

frontend/src/composables/useOpenAIOAuth.ts

@@ -55,7 +55,10 @@ export function useOpenAIOAuth() {
         payload.redirect_uri = redirectUri
       }
 
-      const response = await adminAPI.accounts.generateAuthUrl('/admin/openai/generate-auth-url', payload)
+      const response = await adminAPI.accounts.generateAuthUrl(
+        '/admin/openai/generate-auth-url',
+        payload
+      )
       authUrl.value = response.auth_url
       sessionId.value = response.session_id
       return true