Update create user route

database/migrations/2025_10_13_215246_create_users_table.php

@@ -19,7 +19,7 @@ return new class extends Migration
             $table->string('password');
             $table->string('phone')->nullable();
             $table->integer('validate');
-            $table->integer('role');
+            $table->integer('role')->nullable();
             $table->timestamps();
         });
     }