Function transition

atomic-agent/src/turn/phase.rs:452–459

Compute the next phase and required actions given the current phase and an event. This is a **pure function** with no side effects. The caller (orchestrator) is responsible for executing the returned actions. Unknown or empty phase values are normalized to `Idle` for backward compatibility with session state files created before phase tracking. # Arguments `current` — The current session phase

(current: Phase, event: Event, ctx: TransitionContext)

/// assert!(r.requires_recording());
/// ```
pub fn transition(current: Phase, event: Event, ctx: TransitionContext) -> TransitionResult {
    match current {
        Phase::Idle => transition_from_idle(event),
        Phase::Active => transition_from_active(event),
        Phase::ActiveRecorded => transition_from_active_recorded(event),
        Phase::Ended => transition_from_ended(event, ctx),
    }
}

fn transition_from_idle(event: Event) -> TransitionResult {
    match event {