/**
 * Daemon State Machine
 *
 * Guards daemon lifecycle transitions to prevent illegal states.
 *
 * States: stopped → starting → running → stopping → stopped
 *                                  ↓
 *                                stale → stopping
 */
export type DaemonState = 'stopped' | 'starting' | 'running' | 'stopping' | 'stale';
export declare class DaemonStateMachine {
    private _state;
    private _listeners;
    get state(): DaemonState;
    /** Transition to a new state. Throws if the transition is illegal. */
    transition(to: DaemonState): void;
    /** Register a listener for state transitions. Returns unsubscribe function. */
    onTransition(listener: (from: DaemonState, to: DaemonState) => void): () => void;
    /** Check if a transition is legal without performing it. */
    canTransition(to: DaemonState): boolean;
}
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