Make the repo self-contained and automatically runnable.

- [ ] Write a small method that detects if the `../src/creds.txt` and `../src/hardcoded_variables.txt` files and output path are found in the parent repo, and if not, search them within this repository, and if not, prompt the user for this data.

Start by locating the code that reads ../src/creds.txt, ../src/hardcoded_variables.txt, and the output path. Trace how the repository currently runs, then verify that it searches the parent repository, falls back to locations within this repository, and prompts for missing values.

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