It looks like you want to include more relations in the permission, like:

permission view = viewer + editor + owner
permission edit = editor + owner

To clarify, when you write a relation like this:

relation editor: user | portfolio#owner | group#member

What you're saying is "Let (spicedb) users write relationships for this namespace where the subject is a user, or the subject is an owner of a portfolio or the subject is a member of a group" - but those relationships still need to be written into the db by someone (you)

permissions

are what let you compute over relationships, which is probably what you were going for:

permission view = viewer + editor + owner

This says "we'll pretend there's a

view

relationship between resource and the subject if there's a relationship that says the subject is a viewer, editor, or owner of the resource"