refactor: extract rate formatting logic to RateService and add tests

app/Providers/AppServiceProvider.php

@@ -2,6 +2,11 @@
 
 namespace App\Providers;
 
+use Carbon\CarbonImmutable;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Support\Facades\Date;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\URL;
 use Illuminate\Support\ServiceProvider;
 
 class AppServiceProvider extends ServiceProvider
@@ -19,6 +24,12 @@ class AppServiceProvider extends ServiceProvider
      */
     public function boot(): void
     {
-        //
+        DB::prohibitDestructiveCommands(app()->isProduction());
+
+        URL::forceHttps(app()->isProduction());
+
+        Model::shouldBeStrict(! app()->isProduction());
+
+        Date::use(CarbonImmutable::class);
     }
 }