I don't believe your shorted out your condensor. Leaving 12 volts on them will not hurt. However, it may be bad from the store. Many stories floating around about new but bad condensors.
Points are another matter as is the coil. Leaving 12 volts on the points while closed will burn them and possibly take out your coil due to the constant current load.
The main function of the condensor is arc suppression. Leaving the condensor off while testing will not hurt. If you get it running without the condensor then attach it and if performance suffers, then look for another condensor.
