fix(i18n/de): address code review findings

- Remove broken `import type { I18nDictionary } from '../types'` from
  de.ts and de.settings.ts; match the untyped style of fr.ts/fr.settings.ts
- Add `de`/`de-*` case to normalizeLocale() in runtime.ts so browser
  locale auto-detection picks up German without manual Settings change
- Fix ternary indentation in store.ts to match surrounding pl/ja branches

packages/ui/src/lib/i18n/store.ts

@@ -43,10 +43,10 @@ async function loadDictionary(locale: Locale): Promise<I18nDictionary> {
               : locale === 'pl'
                 ? await import('./messages/pl') as { dict: I18nDictionary }
                 : locale === 'de'
-      ? await import('./messages/de') as { dict: I18nDictionary }
-      : locale === 'ja'
-                  ? await import('./messages/ja') as { dict: I18nDictionary }
-                  : { dict: enDict };
+                  ? await import('./messages/de') as { dict: I18nDictionary }
+                  : locale === 'ja'
+                    ? await import('./messages/ja') as { dict: I18nDictionary }
+                    : { dict: enDict };
   dictionaries.set(locale, mod.dict);
   return mod.dict;
 }