Add dark-mode business logo, payment order steps, and Arvan DNS diagnostics.

Store logo_dark_media_id on businesses, expose logoDarkUrl on tenant/website APIs, prepend awaiting-payment steps to order workflows, and surface clearer Arvan API network errors.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/business-profile/dto/update-business-profile.dto.ts

@@ -110,6 +110,11 @@ export class UpdateBusinessProfileDto {
   @IsInt()
   logoMediaId?: number | null;
 
+  @IsOptional()
+  @Type(() => Number)
+  @IsInt()
+  logoDarkMediaId?: number | null;
+
   @IsOptional()
   @IsArray()
   @Type(() => Number)