refactor(config): 导出 IDefaultConfig 接口以重用类型定义

将 IDefaultConfig 接口从 config/index.ts 中导出，以便在 src/main/modules/setting/index.ts 中重用类型定义，减少代码重复并提高类型安全性。

config/index.ts

@@ -6,7 +6,7 @@ type LanguageType = "zh" | "en"
 type LogoType = "logo" | "bg"
 
 // 配置接口定义
-interface IDefaultConfig {
+export interface IDefaultConfig {
   language: LanguageType
   "common.theme": ThemeType
   "desktop:wallpaper": string

src/main/modules/setting/index.ts

@@ -4,12 +4,13 @@ import path from "path"
 import { cloneDeep } from "lodash"
 import { injectable } from "inversify"
 import Config from "config"
+import type { IDefaultConfig } from "config"
 import _debug from "debug"
 import BaseClass from "main/base/base"
 
 const debug = _debug("app:setting")
 
-type IConfig = typeof Config.default_config
+type IConfig = IDefaultConfig
 
 type IOnFunc = (n: IConfig, c: IConfig, keys?: (keyof IConfig)[]) => void
 type IT = (keyof IConfig)[] | keyof IConfig | "_"