Refactor configuration loading: Updated multiple public PHP files to require a new bootstrap file for configuration management. Adjusted paths for product configuration to enhance maintainability and consistency across the application.

backend/includes/functions.php

@@ -3,6 +3,12 @@
  * Helper functions for HexaHost.de
  */
 
+$configDir = defined('HEXAHOST_CONFIG_DIR')
+    ? HEXAHOST_CONFIG_DIR
+    : __DIR__ . '/../config';
+
+require_once $configDir . '/site-config.php';
+
 // Sichere Session-Konfiguration
 if (session_status() === PHP_SESSION_NONE) {
     // Session-Cookie-Sicherheit
@@ -51,6 +57,11 @@ function includeHeader($title = '', $description = '', $page = '', $scripts = []
     
     $current_page = $page;
     $additional_scripts = $scripts;
+
+    if (!isset($canonical_url)) {
+        $requestPath = parse_url($_SERVER['REQUEST_URI'] ?? '/', PHP_URL_PATH) ?: '/';
+        $canonical_url = rtrim(getCanonicalBaseUrl(), '/') . $requestPath;
+    }
     
     include __DIR__ . '/header.php';
 }