context.folderPath nil/empty string improvements

[tomholub]

Not sure what is an "" (empty string) path. Doesn't lead anywhere - it's as bad as a nil.

Any good reason why context.folderPath should ever be nil? I mean, why is folderPath nilable in the first place?

Originally posted by @tomholub in #1087 (comment)

[tomholub]

[tomholub]

Got it. Could add a comment above the init for clarity, and also replace context.folderPath ?? "" with context.folderPath so that it's value or nil, not value or empty value.