enhance(frontend): Self-XSS防止用のメッセージを追加 (#14839)

* enhance(frontend): Self-XSS防止用のメッセージを追加

* Update Changelog

* embedにも同様の記述を追加

packages/frontend/src/boot/common.ts

@@ -11,7 +11,7 @@ import directives from '@/directives/index.js';
 import components from '@/components/index.js';
 import { applyTheme } from '@/scripts/theme.js';
 import { isDeviceDarkmode } from '@/scripts/is-device-darkmode.js';
-import { updateI18n } from '@/i18n.js';
+import { updateI18n, i18n } from '@/i18n.js';
 import { $i, refreshAccount, login } from '@/account.js';
 import { defaultStore, ColdDeviceStorage } from '@/store.js';
 import { fetchInstance, instance } from '@/instance.js';
@@ -269,6 +269,27 @@ export async function common(createVue: () => App<Element>) {
 
 	removeSplash();
 
+	//#region Self-XSS 対策メッセージ
+	console.log(
+		`%c${i18n.ts._selfXssPrevention.warning}`,
+		'color: #f00; background-color: #ff0; font-size: 36px; padding: 4px;',
+	);
+	console.log(
+		`%c${i18n.ts._selfXssPrevention.title}`,
+		'color: #f00; font-weight: 900; font-family: "Hiragino Sans W9", "Hiragino Kaku Gothic ProN", sans-serif; font-size: 24px;',
+	);
+	console.log(
+		`%c${i18n.ts._selfXssPrevention.description1}`,
+		'font-size: 16px; font-weight: 700;',
+	);
+	console.log(
+		`%c${i18n.ts._selfXssPrevention.description2}`,
+		'font-size: 16px;',
+		'font-size: 20px; font-weight: 700; color: #f00;',
+	);
+	console.log(i18n.tsx._selfXssPrevention.description3({ link: 'https://misskey-hub.net/docs/for-users/resources/self-xss/' }));
+	//#endregion
+
 	return {
 		isClientUpdated,
 		app,