public function up(): void 	{ 		Schema::create('categories', function (Blueprint $table) { 			$table->uuid('id')->primary(); 			$table->string('name', 100); 			$table->string('slug', 50)->unique(); 			$table->boolean('active')->default(true); 			$table->string('description', 500)->nullable(); 			$table->boolean('use_parent_filters')->default(true); 			$table->timestamps(); 		});  		Schema::table('categories', function (Blueprint $table) { 			$table->uuid('category_id')->nullable();// parent_id 			$table->foreign('category_id')->references('id')->on('categories')->onDelete('cascade'); 		}); 	}