refactor: migrate amount fields to decimal and implement location service restriction for unsupported regions

siro_driver/lib/controller/home/captin/home_captain_controller.dart

@@ -736,11 +736,9 @@ class HomeCaptainController extends GetxController {
           );
 
       if (locData != null && locData.latitude != null) {
-        myLocation = LatLng(locData.latitude!, locData.longitude!);
-        print(
-            "📍 [HomeCaptain] Location updated: ${myLocation.latitude}, ${myLocation.longitude}");
-
-        if (!CountryPolygons.isServiceSupported(myLocation)) {
+        final rawPos = LatLng(locData.latitude!, locData.longitude!);
+        if (!CountryPolygons.isServiceSupported(rawPos)) {
+          myLocation = const LatLng(31.9539, 35.9106);
           if (!Get.isSnackbarOpen) {
             Get.snackbar(
               'Alert'.tr,
@@ -754,7 +752,11 @@ class HomeCaptainController extends GetxController {
               isDismissible: true,
             );
           }
+        } else {
+          myLocation = rawPos;
         }
+        print(
+            "📍 [HomeCaptain] Location updated: ${myLocation.latitude}, ${myLocation.longitude}");
       } else {
         print(
             "⚠️ [HomeCaptain] Could not get current location, using default.");