Copper shorts can be identified with testing. Make sure you define test requirements in your PCB design software.
Forget about using antiquated design software with a command line interface. Altium Designer gives you access to the best features
For the best success when manufacturing your PCB design, you need the latest Gerber X2 file formats in the free Gerber file editor in your PCB design tools.
Once you know how to build a circuit board, you can put your knowledge into practice with Altium Designer.
You can prepare your design for manufacturing with PCB Cart thanks to the manufacturing and supply chain tools in Altium Designer.