docs: document generated locale bundles

scripts/control-ui-i18n.ts

@@ -480,9 +480,10 @@ function renderTranslationValue(value: TranslationValue, indent = 0): string {
 
 function renderLocaleModule(entry: LocaleEntry, value: TranslationMap): string {
   return [
+    "// Generated locale bundle for Control UI translations.",
+    "// Run `pnpm ui:i18n:sync` instead of editing this file directly.",
     'import type { TranslationMap } from "../lib/types.ts";',
     "",
-    "// Generated by scripts/control-ui-i18n.ts.",
     `export const ${entry.exportName}: TranslationMap = ${renderTranslationValue(value)};`,
     "",
   ].join("\n");