Pre-combat-rewrite: Backup current state before comprehensive combat frontend rewrite

pwa/src/services/api.ts

@@ -13,6 +13,13 @@ const api = axios.create({
   },
 })
 
+// Add request interceptor to include language preference
+api.interceptors.request.use((config) => {
+  const language = localStorage.getItem('i18nextLng') || 'en'
+  config.headers['Accept-Language'] = language
+  return config
+})
+
 // Add token to requests if it exists
 const token = localStorage.getItem('token')
 if (token) {