per-locale bundle & inline locale (#16369)

* feat: split entry file by locale name

* chore: とりあえず transform hook で雑に分割

* chore: とりあえず transform 結果をいい感じに

* chore: concurrent buildで高速化

* chore: vite ではローケルのないものをビルドして後処理でどうにかするように

* chore: 後処理のためにi18n.jを単体になるように切り出す

* chore: use typescript

* chore: remove unref(i18n) in vite build process

* chore: inline variable

* fix: build error

* fix: i18n.ts.something.replaceAll() become error

* chore: ignore export specifier from error

* chore: support i18n.tsx as object

* chore: process literal for all files

* chore: split config and locale

* chore: inline locale name

* chore: remove updating locale in boot common

* chore: use top-level await to load locales

* chore: inline locale

* chore: remove loading locale from boot.js

* chore: remove loading locale from boot.js

* コメント追加

* fix test; fetchに失敗する

* import削除ログをdebugレベルに

* fix: watch pug

* chore: use hash for entry files

* chore: remove es-module-lexer from dependencies

* chore: move to frontend-builder

* chore: use inline locale in embed

* chore: refetch json on hot reload

* feat: store localization related to boot.js in backend in bootloaderLocales localstorage

* 応急処置を戻す

* fix spex

* fix `Using i18n identifier "e" directly. Skipping inlining.` warning

* refactor: use scriptsDir parameter

* chore: remove i18n from depmap

* chore: make build crash if errors

* error -> warn few conditions

* use inline object

* update localstorage keys

* remove accessing locale localstorage

* fix: failed to process i18n.tsx.aaa({x:i18n.bbb})

packages/frontend/package.json

@@ -4,7 +4,7 @@
 	"type": "module",
 	"scripts": {
 		"watch": "vite",
-		"build": "vite build",
+		"build": "tsx build.ts",
 		"storybook-dev": "nodemon --verbose --watch src --ext \"mdx,ts,vue\" --ignore \"*.stories.ts\" --exec \"pnpm build-storybook-pre && pnpm exec storybook dev -p 6006 --ci\"",
 		"build-storybook-pre": "(tsc -p .storybook || echo done.) && node .storybook/generate.js && node .storybook/preload-locale.js && node .storybook/preload-theme.js",
 		"build-storybook": "pnpm build-storybook-pre && storybook build --webpack-stats-json storybook-static",
@@ -47,6 +47,7 @@
 		"date-fns": "4.1.0",
 		"estree-walker": "3.0.3",
 		"eventemitter3": "5.0.1",
+		"execa": "9.6.0",
 		"frontend-shared": "workspace:*",
 		"icons-subsetter": "workspace:*",
 		"idb-keyval": "6.2.2",
@@ -137,6 +138,7 @@
 		"start-server-and-test": "2.0.12",
 		"storybook": "9.1.0",
 		"storybook-addon-misskey-theme": "github:misskey-dev/storybook-addon-misskey-theme",
+		"tsx": "4.20.3",
 		"vite-plugin-turbosnap": "1.0.3",
 		"vitest": "3.2.4",
 		"vitest-fetch-mock": "0.4.5",