refactor(frontend): remove $i

packages/frontend/@types/vue.d.ts

@@ -1,12 +1,9 @@
 /// <reference types="vue/macros-global" />
 
-import type { $i } from '@/account';
-import type { instance } from '@/instance';
 import type { i18n } from '@/i18n';
 
 declare module 'vue' {
 	interface ComponentCustomProperties {
-		$i: typeof $i;
 		$t: typeof i18n['t'];
 		$ts: typeof i18n['ts'];
 	}