Sam Thompson updated the navigation documentation for the slackhq/circuit repository, focusing on clarifying root back-button behavior using Kotlin and Markdown. He replaced references to the deprecated BackHandler with the recommended RememberCircuitNavigator and onRootPop lambda, aligning the documentation with current API best practices. This work addressed technical debt and reduced migration risk for downstream projects by ensuring developers follow the latest navigation patterns. Sam’s changes improved onboarding for new contributors and enhanced the flexibility of navigation setup, making it easier to implement custom back-button behavior on the root screen. The update demonstrated careful attention to documentation quality and technical accuracy.