Since Panther's Slackbot requires that Slack users have a corresponding Panther user in order to interact with the alerts, does Slackbot also respect the permissions of that user's role within Panther?
Yes! In order to interact with alerts via the Slackbot, a user's role requires the Edit Alerts permission. Additionally, if you have enabled RBAC per log type for alerts, then Slack users will only be able to interact with alerts with log types for which they are permitted.