import type { DeliveryIntent, TurnLifecycleState } from '@canonmsg/backend-contracts';
export { ACTIVE_TURN_STALE_THRESHOLD_MS, WAITING_INPUT_STALE_THRESHOLD_MS, getTurnStateStaleThresholdMs, isTurnOpen, isTurnStateStale, normalizeTurnMetadata, resolveTurnMessageSemantics, shouldPromoteConversationMessage, shouldTriggerAgentTurn, } from '@canonmsg/backend-contracts';
export type { DeliveryIntent, InboundDisposition, TriggerDecision, TurnLifecycleState, TurnMessageSemantics, TurnMetadata, } from '@canonmsg/backend-contracts';
export interface RuntimeCapabilities {
    supportsInterrupt: boolean;
    supportsInputInterrupt: boolean;
    supportsQueue: boolean;
    supportsInterleave: boolean;
    supportsRequiresAction: boolean;
    supportsNonFinalPermanentMessages: boolean;
}
export declare const FINAL_MESSAGE_HANDOFF_MS = 750;
export interface TurnState {
    turnId?: string | null;
    state: TurnLifecycleState;
    queueDepth: number;
    currentSpeakerId?: string | null;
    lastAcceptedIntent?: DeliveryIntent | null;
    activeMessageIds?: string[];
    capabilities?: RuntimeCapabilities;
    openedAt?: number;
    turnUpdatedAt?: number | null;
    updatedAt?: number;
    completedAt?: number | null;
}
export declare const DEFAULT_RUNTIME_CAPABILITIES: RuntimeCapabilities;
/**
 * Contact-graph and admission actions a Canon host runtime exposes through the
 * agent SDK. Plugins consult this to decide which tools to register on the
 * LLM's behalf — e.g., whether to advertise a `block_user` tool. A flag is
 * `true` only when the runtime has both the SDK wrapper *and* a tool surface
 * wired up that calls it. Until plugin tool wiring ships, runtimes should
 * advertise `HOST_ADMISSION_ACTIONS_DISABLED` so consumers don't render UI
 * for actions the runtime can't actually perform.
 */
export interface HostAdmissionActionCapabilities {
    blockUser: boolean;
    unblockUser: boolean;
    removeContact: boolean;
    requestContact: boolean;
    reachOut: boolean;
}
export declare const HOST_ADMISSION_ACTION_CAPABILITIES: HostAdmissionActionCapabilities;
export declare const HOST_ADMISSION_ACTIONS_DISABLED: HostAdmissionActionCapabilities;
export declare function normalizeTurnState(value: unknown): TurnState | null;