/**
 * Role-specific accessor implementations for conduit, nexus, signaldock, and telemetry.
 *
 * These provide typed accessor interfaces over the existing role-specific DB modules.
 * The implementations are minimal — full API surfaces live in the role-specific
 * sqlite modules.
 *
 * @task T9188
 * @epic T9048
 * @see packages/contracts/src/sub-accessors.ts (accessor interfaces)
 */
import type { AgentRegistrySubAccessor, ConduitAccessor, NexusAccessor, TelemetryAccessor } from '@cleocode/contracts';
/**
 * Create a ConduitAccessor for the given project root.
 *
 * Wraps conduit-sqlite module functions behind the typed interface.
 *
 * @param projectRoot - Project root for resolving conduit.db path.
 * @returns A ConduitAccessor instance.
 * @task T9188
 */
export declare function createConduitAccessor(projectRoot?: string): ConduitAccessor;
/**
 * Create a NexusAccessor for the given project root.
 *
 * Wraps nexus-sqlite module functions behind the typed interface.
 *
 * @param projectRoot - Project root (unused — nexus.db is global-scope).
 * @returns A NexusAccessor instance.
 * @task T9188
 */
export declare function createNexusAccessor(_projectRoot?: string): NexusAccessor;
/**
 * Create a AgentRegistrySubAccessor.
 *
 * Wraps signaldock-sqlite module functions behind the typed interface.
 *
 * @returns A AgentRegistrySubAccessor instance.
 * @task T9188
 */
export declare function createAgentRegistrySubAccessor(): AgentRegistrySubAccessor;
/**
 * Create a TelemetryAccessor.
 *
 * Telemetry DB is a future concern (no backing DB yet). This implementation
 * is a no-op stub that satisfies the interface and logs to stderr in verbose mode.
 *
 * @returns A TelemetryAccessor instance.
 * @task T9188
 */
export declare function createTelemetryAccessor(): TelemetryAccessor;
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