FR: shpool shouldn't allow non alphanumeric characters in session name

[thiswillbeyourgithub]

For some reason (probably a bug fom my fzf selector and not a shpool bug per se) I created a shpool session with a name straight from the shpool list output. Look at that:

❯ shpool list
NAME	STARTED_AT	STATUS
tes
test	2024-06-19T10:04:37.285+00:00	disconnected	2024-06-19T10:05:16.872+00:00	disconnected

As you can see this is a problem because it makes the session tough to kill, we don't know where the actual name ends.

Suggestions:

1. Put the NAME column as the rightmost column, this way no doubt about where the string ends
2. Possibly: wrap the session name in 'quotation mark'?
3. Better: Disallow non alphanumeric characters in the session name. So only common letters and ints are allowed. Maybe with a few symbols like - and _ but certainly no spaces.

[Ethan Pailes]

I think suggestion 3 is probably the way to go. I don't see any reasons to have non-alphanum names in session names.

Thanks for flagging this!

[Mark Lawrence]

I currently name my screen sessions [e-mail]:/dev/tty1. So I would respectfully ask that session names be rejected based on whitespace exclusion, instead of special character inclusion.

[Ethan Pailes]

That's a good point, yeah whitespace (really just tabs) is the real issue here since they can mangle the tsv output of shpool list