enhance(frontend): 季節に応じた画面の演出を南半球に対応させる (#12838)

* (enhance) 季節に応じた画面の演出を南半球に対応させる

* Update Changelog

* (add) 半球の簡易自動判定

---------

Co-authored-by: syuilo <Syuilotan@yahoo.co.jp>

packages/frontend/src/store.ts

@@ -8,6 +8,7 @@ import * as Misskey from 'misskey-js';
 import { miLocalStorage } from './local-storage.js';
 import type { SoundType } from '@/scripts/sound.js';
 import { Storage } from '@/pizzax.js';
+import { hemisphere } from '@/scripts/intl-const.js';
 
 interface PostFormAction {
 	title: string,
@@ -429,6 +430,10 @@ export const defaultStore = markRaw(new Storage('base', {
 			sfxVolume: 1,
 		},
 	},
+  hemisphere: {
+		where: 'device',
+		default: hemisphere as 'N' | 'S',
+  },
 	enableHorizontalSwipe: {
 		where: 'device',
 		default: true,