modified version

public/js/api.js

@@ -1,13 +1,17 @@
 /*
- * API communication module. Centralizes fetch calls and service-worker
- * registration so network details stay out of rendering and state logic.
+ * API communication module. Centralizes fetch calls so network details stay
+ * out of rendering and state logic. All JSON traffic from the frontend goes
+ * through `fetchJson()`, which prepends the versioned base path and unwraps
+ * structured error responses into regular thrown errors.
  */
 
 import { API_BASE } from './constants.js';
 
 /*
- * Generic JSON fetcher. All frontend API calls pass through this function so
- * error handling, header defaults, and base path are consistent everywhere.
+ * Generic JSON fetcher. Prepends the API base path when the caller passes a
+ * relative path, forwards headers, and parses the response body on success.
+ * Non-2xx responses raise an `Error` whose message is the server's `message`
+ * field when present, otherwise a generic status-code fallback.
  */
 export async function fetchJson(path, options = {}) {
   const url = path.startsWith('http') ? path : `${API_BASE}${path}`;
@@ -40,11 +44,3 @@ export async function fetchJson(path, options = {}) {
 
   return response.json();
 }
-
-export function registerServiceWorker() {
-  if ('serviceWorker' in navigator) {
-    navigator.serviceWorker.register('/sw.js').catch((error) => {
-      console.error('Service worker registration failed', error);
-    });
-  }
-}