php config file

web/list_providers.php

@@ -4,10 +4,13 @@
 // It expects the Flask API to be reachable at http://127.0.0.1:5000
 // The API endpoint for providers is /providers.
 
+// file settings
+require_once __DIR__ . '/config.php';
+
 // --- Helper to call the API -------------------------------------------
 function callApi(string $method, string $path, $body = null)
 {
-    $url = 'http://127.0.0.1:5000' . $path;
+    $url = BASE_API_URL . $path;
     $ch  = curl_init($url);
     curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $method);
     curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);