enhance(backend): pugをやめ、JSXベースのテンプレートに変更 (#16908)

* enhance(backend): pugをやめ、JSXベースのテンプレートに変更 (to misskey-dev dev branch) (#16889)

* wip

* wip

* wip

* wip

* fix lint

* attempt to fix test

* fix

* fix

* fix: oauthページの描画がおかしい問題を修正

* typo [ci skip]

* fix

* fix

* fix

* fix

* fix

* refactor

* fix

* fix

* fix broken lockfile

* fix: expose supported languages as global variable

* remove i18n package from root as it is no longer required [ci skip]

* fix

* fix: add i18n package.json to Docker target-builder stage for federation tests (#16909)

* Initial plan

* fix: add i18n package.json to Docker target-builder stage for federation tests

Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

* fix: followup-test-federation for enh-remove-pug (#16910)

* fix: followup-test-federation for enh-remove-pug

* Revert "fix: add i18n package.json to Docker target-builder stage for federation tests (#16909)"

This reverts commit 14313468d34f49c363eef4d0a932e9fc0d9a37fb.

* fix: CSSが読み込まれない場合がある問題を修正

* fix [ci skip]

* fix: propsのデフォルト値をnull合体演算子から論理和演算子に変更（空文字に対処するため）

* remove @types/pug

* enhance: bootloaderを埋め込むように

* fix possible race condition

* remove esbuild

---------

Co-authored-by: Copilot <198982749+Copilot@users.noreply.github.com>
Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>
Co-authored-by: おさむのひと <46447427+samunohito@users.noreply.github.com>

packages/backend/src/config.ts

@@ -11,6 +11,7 @@ import { type FastifyServerOptions } from 'fastify';
 import type * as Sentry from '@sentry/node';
 import type * as SentryVue from '@sentry/vue';
 import type { RedisOptions } from 'ioredis';
+import type { ManifestChunk } from 'vite';
 
 type RedisOptionsSource = Partial<RedisOptions> & {
 	host: string;
@@ -187,9 +188,9 @@ export type Config = {
 	authUrl: string;
 	driveUrl: string;
 	userAgent: string;
-	frontendEntry: { file: string | null };
+	frontendEntry: ManifestChunk;
 	frontendManifestExists: boolean;
-	frontendEmbedEntry: { file: string | null };
+	frontendEmbedEntry: ManifestChunk;
 	frontendEmbedManifestExists: boolean;
 	mediaProxy: string;
 	externalMediaProxyEnabled: boolean;