/**
 * SystemIntegrator.ts
 *
 * Registers built-in ECS systems that connect the engine subsystems:
 * - Animation system reads 'trait:animation' components
 * - Audio system reads 'trait:audio' components
 * - Particle system reads 'trait:particles' components
 * - State machine system reads 'trait:state' components
 * - Network sync system reads 'trait:sync' components
 * - Theme system reads 'trait:theme' components
 *
 * Each "integration system" queries the ECS World for entities with the
 * relevant trait component, then drives the corresponding engine subsystem.
 */
import { World, WorldEntity as Entity } from '../ecs';
import type { SystemScheduler, SystemPhase } from '../ecs';
import type { EventBus } from '@holoscript/core';
export interface ECSSystem {
    name: string;
    priority: number;
    enabled: boolean;
    requiredComponents: string[];
    update: (world: World, entities: Entity[], delta: number) => void;
    phase?: SystemPhase;
}
/**
 * Create the built-in integration systems.
 * These bridge ECS components to engine subsystems.
 */
export declare function createIntegrationSystems(eventBus: EventBus): ECSSystem[];
/**
 * Register all integration systems with the scheduler.
 */
export declare function registerIntegrationSystems(scheduler: SystemScheduler, eventBus: EventBus, world?: World): void;
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