I think you're looking for something like this (the important part being embeddeding a REPL call toward the end after whateve rsetup): https://gist.github.com/lostmygithubaccount/77d12d03894953bc...

You can make `--interactive` or whatever you want a CLI flag from the script. I often make these small Typer CLIs with something like that (or in this case, in another dev script like this, I have `--sql` for entering a DuckDB SQL repl)