chore: enhance Nginx configuration for direct access and update main entry point to dynamically resolve Router basename based on environment settings

frontend/nginx.conf

@@ -6,6 +6,11 @@ server {
     root /app/dist;
     index index.html;
 
+    # Acceso directo al puerto (sin Apache): misma app bajo el prefijo del build.
+    location = / {
+        return 301 /orcid2words/;
+    }
+
     # Apache forwards the full path; strip /orcid2words/ before resolving files under dist/.
     location = /orcid2words {
         return 301 /orcid2words/;

frontend/src/main.jsx

@@ -1,13 +1,40 @@
-import { StrictMode } from 'react'
-import { createRoot } from 'react-dom/client'
-import { BrowserRouter } from 'react-router-dom'
-import App from './App.jsx'
-import './index.css'
+import { StrictMode } from "react";
+import { createRoot } from "react-dom/client";
+import { BrowserRouter } from "react-router-dom";
+import App from "./App.jsx";
+import "./index.css";
 
-createRoot(document.getElementById('root')).render(
+/**
+ * `import.meta.env.BASE_URL` es fijo en build (p. ej. `/orcid2words/` en prod).
+ * Los assets siguen bajo ese prefijo, pero la URL del documento puede ser `/`
+ * (acceso directo `http://host:8073/`). React Router exige que el pathname
+ * empiece por el basename; si no, no renderiza nada.
+ */
+function resolveRouterBasename() {
+  const configured = import.meta.env.BASE_URL ?? "/";
+  const withSlash = configured.endsWith("/") ? configured : `${configured}/`;
+
+  if (withSlash === "/") {
+    return "/";
+  }
+
+  const { pathname } = window.location;
+  if (pathname === "/" || pathname === "") {
+    return "/";
+  }
+
+  const prefix = withSlash.replace(/\/$/, "");
+  if (pathname === prefix || pathname.startsWith(`${prefix}/`)) {
+    return withSlash;
+  }
+
+  return "/";
+}
+
+createRoot(document.getElementById("root")).render(
   <StrictMode>
-    <BrowserRouter basename={import.meta.env.BASE_URL}>
+    <BrowserRouter basename={resolveRouterBasename()}>
       <App />
     </BrowserRouter>
-  </StrictMode>
-)
+  </StrictMode>,
+);