/**
 * StateSnapshot.ts
 *
 * Captures runtime state beyond the scene graph:
 * animation progress, particle emitter state, scroll offsets, focus state.
 */
export interface AnimationSnapshot {
    activeClipIds: string[];
    springValues: Record<string, number>;
}
export interface ParticleSnapshot {
    emitterId: string;
    isEmitting: boolean;
    activeCount: number;
}
export interface UISnapshot {
    focusedInputId: string | null;
    cursorIndex: number;
    scrollOffsets: Record<string, number>;
}
export interface RuntimeStateSnapshot {
    timestamp: string;
    animation: AnimationSnapshot;
    particles: ParticleSnapshot[];
    ui: UISnapshot;
    custom: Record<string, any>;
}
/**
 * Capture current runtime state from various subsystems.
 */
export declare class StateSnapshotCapture {
    /**
     * Create a snapshot of the current runtime state.
     * Subsystem references are passed in to avoid coupling.
     */
    capture(options: {
        animationEngine?: {
            getActiveIds: () => string[];
        };
        particleSystems?: Array<{
            id: string;
            isEmitting: () => boolean;
            getActiveCount: () => number;
        }>;
        keyboardSystem?: {
            focusedInputId: string | null;
            cursorIndex: number;
        };
        scrollOffsets?: Record<string, number>;
        custom?: Record<string, any>;
    }): RuntimeStateSnapshot;
}
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