Mobile Navigation (Android + KMP/iOS)

This skill unifies the three navigation approaches. Pick one with the table, then jump to its section.

Which approach?

Approach	Use when	Section
Jetpack Navigation Compose (`androidx.navigation`)	Android-only app, mature & stable, `NavHost` + `composable<Route>`	A
Jetpack Navigation 3 (Nav3)	Android, want the new back-stack-as-state model, adaptive Scenes (list-detail/two-pane), multiple back stacks	B
Multiplatform (Voyager / Decompose / CMP nav / SwiftUI)	Shared navigation across Android + iOS from `commonMain`	C

KMP + iOS shops: use C for shared nav. Use A/B when the Android app drives navigation natively, or for the androidMain side.