Standardize error and success messages

Some parts of the script communicated successful completions and errors differently, so standardizing one styling format for them would make it easier for users to troubleshoot.

![Image](https://github.com/user-attachments/assets/71682e61-0b30-44c2-bc15-fd5dae3e2643)

![Image](https://github.com/user-attachments/assets/e3bab427-f70b-4554-a9cf-e919957acc96)
(First draft thoughts...)