We have a standard note (in src/components/ProPlanNotice.mdx) that we include on pages or sections defining features that are available only in the pro plan. It looks like this:

This feature is available exclusively as part of the Pro plan and is not included in the Lite plan. Please refer to our pricing page for more information about our plans and features.

While that is true as written, I think it could be more clear—especially regarding public repositories that get all Pro-tier plan features for free, even when they're associated with Lite-tier CodeRabbit accounts.