Shorten tracebacks for errors

[alyssadai]

The tracebacks are currently quite long and difficult to parse. We should try and limit the error output to the informative message and what's necessary for the user to identify the issue in their input.

We may want to also consider https://typer.tiangolo.com/tutorial/terminating/#exit-with-an-error where it makes sense for upfront checks.

See also #212 (comment)

• maybe make this configurable via a flag

[surchs]

#162 seems related, let's handle those together and not deal with the present issue now

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