(dev-mode) devモードの改善 (#12639)

* fix dev-mode

* fix dev-mode

* fix dev-mode

* fix dev-mode

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

scripts/build-assets.mjs

@@ -95,6 +95,7 @@ if (process.argv.includes("--watch")) {
 	for await (const event of watcher) {
 		const filename = event.filename?.replaceAll('\\', '/');
 		if (/^[a-z]+-[A-Z]+\.yml/.test(filename)) {
+			console.log(`update ${filename} ...`)
 			locales = buildLocales();
 			await copyFrontendLocales()
 		}