rebase

frontend/src/lib/api.ts

@@ -29,7 +29,10 @@ import type {
   WorldPreset,
 } from "@/types";
 
-const BASE_URL = "/api";
+// Use VITE_API_BASE_URL if set (for local `npm run dev` pointing at a separate
+// backend); otherwise default to relative "/api" which works behind the nginx
+// reverse proxy in the Docker deployment.
+const BASE_URL = (import.meta.env.VITE_API_BASE_URL as string | undefined)?.replace(/\/$/, "") || "/api";
 const ACCESS_TOKEN_KEY = "airpg_access_token";
 const REFRESH_TOKEN_KEY = "airpg_refresh_token";