metamorphicc/PythTerminalCSV — reverse-engineered prompt

Build me a simple TypeScript terminal tool for working with crypto price data in a CSV file. I want to be able to run it from the command line, point it at a file like eth.csv, and have it read the rows, clean up the data, and produce a report.json file with the important results.

Keep it practical and easy to use. The terminal output should tell me what file was loaded, how many rows were processed, and whether the report was created successfully. If the CSV is missing, empty, or has bad values, show a clear friendly error instead of crashing.

I don’t need a fancy app or dashboard. Just make the script reliable, readable, and easy to change later if I want to use a different CSV. Add a simple npm command so I can run it without remembering TypeScript details.