Android / KMP Presentation Layer (MVI)

Overview

Every screen has:

1. State — a single data class holding all UI state fields.
2. Action (Intent) — a sealed interface of all user-triggered actions.
3. ViewModel — holds StateFlow<State> and processes Action.
4. Event (optional) — a sealed interface of one-time side effects the ViewModel needs to push to the UI. Only add this when needed (see When to add Events).

State