SwiftfulRouting is a programmatic navigation library for SwiftUI that replaces native NavigationStack, sheets, fullScreenCovers, alerts, and confirmationDialogs with a unified, declarative router API. It provides a `RouterView` wrapper which injects an `AnyRouter` into the environment, enabling screens, alerts, modals, transitions (in-place content swaps), and modules (full hierarchy replacements) to be triggered from anywhere in the view tree. The library uses an internal `RouterViewModel` to manage a stack of `AnyDestinationStack` entries representing the screen hierarchy, with separate state for alerts, modals, and transitions. It also includes queue systems for screens and transitions, logging/analytics support, and resizable sheet configuration. The architecture is a Swift Package with one external dependency (SwiftfulRecursiveUI for LazyZStack), and targets iOS 16+, macOS 12+, tvOS 14+.