Implement restaurant ID handling in schedule operations; add AdminAuthGuard for access control; enhance schedule service with validation for existing schedules and restaurant existence checks.

src/modules/restaurants/dto/create-schedule.dto.ts

@@ -30,7 +30,4 @@ export class CreateScheduleDto {
   @Type(() => Boolean)
   isActive?: boolean;
 
-  @ApiProperty({ example: 'rest-ulid-123', description: 'شناسه رستوران' })
-  @IsString()
-  restId!: string;
 }