feat: add Binance Pay webhook handler and implement payment order creation in billing service

packages/flutter-sdk/lib/src/styles.dart

@@ -3,14 +3,26 @@ class IntaleqStyles {
   IntaleqStyles._();
 
   /// Dark premium Obsidian style — the Intaleq default.
+  ///
+  /// This style is optimized for readability and a premium look.
   static String obsidian(String apiKey) =>
-      'https://maps.intaleq.com/styles/obsidian/style.json?key=$apiKey';
+      'https://map-saas.intaleqapp.com/api/maps/style.json?theme=obsidian&api_key=$apiKey';
 
   /// High-contrast light style.
+  ///
+  /// Best for daylight use and printing.
   static String light(String apiKey) =>
-      'https://maps.intaleq.com/styles/light/style.json?key=$apiKey';
+      'https://map-saas.intaleqapp.com/api/maps/style.json?theme=light&api_key=$apiKey';
 
   /// Satellite imagery with road labels.
+  ///
+  /// High-resolution satellite tiles overlaid with Intaleq vector labels.
   static String satellite(String apiKey) =>
-      'https://maps.intaleq.com/styles/satellite/style.json?key=$apiKey';
+      'https://map-saas.intaleqapp.com/api/maps/style.json?theme=satellite&api_key=$apiKey';
+
+  /// Path to the local light style asset.
+  static const String localLight = 'assets/style.json';
+
+  /// Path to the local dark style asset.
+  static const String localDark = 'assets/style_dark.json';
 }