Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
Re: 1password being an option to handle passwords for the different channel apps
Roku doesnt ever announce its functionality/development roadmap with any meaningful specificity.
Roku does have SSO (single sign on) support, but thats app/app family dependent.
A "stored credentials" manager built-in to the OS that could/would work with all apps/authentication types would be handy, especially for having to login/authenticate the same app on several different devices, or when reinstalling an app, or after a factory reset.
All that being said, Roku would be more likely to implement their own solution than to license and integrate a third party one, but anything is possible.