feat: add French and Spanish locales and update language selector

scripts/translate-locales.mjs

@@ -23,7 +23,9 @@ const defaultSource = resolve(repoRoot, 'client/src/i18n/locales/de.json')
 const TARGETS = {
   da: 'DA',
   sv: 'SV',
-  nb: 'NB'
+  nb: 'NB',
+  fr: 'FR',
+  es: 'ES'
 }
 
 /** Keys whose values stay identical to source (language names, brand). */

scripts/validate-i18n-keys.mjs

@@ -11,7 +11,7 @@ import { flattenTranslation } from './lib/deepl-translate.mjs'
 
 const __dirname = dirname(fileURLToPath(import.meta.url))
 const localesDir = resolve(__dirname, '../client/src/i18n/locales')
-const localeFiles = ['de.json', 'en.json', 'da.json', 'sv.json', 'nb.json']
+const localeFiles = ['de.json', 'en.json', 'da.json', 'sv.json', 'nb.json', 'fr.json', 'es.json']
 
 async function loadKeys(filename) {
   const raw = await readFile(resolve(localesDir, filename), 'utf8')