import { type CommunicationRule } from './communication.js';
/** Shared social membership semantics; presentation and runtime ownership are separate. */
export type ConversationRole = 'admin' | 'member';
export type ConversationParticipantType = 'human' | 'ai_agent';
export interface ConversationParticipantSummary {
    humanCount: number;
    agentCount: number;
    totalCount: number;
}
/** `owner` is a read-only legacy spelling, never superior to another admin. */
export declare function normalizeConversationRole(value: unknown): ConversationRole | null;
export declare function isConversationAdminRole(value: unknown): boolean;
export declare function readMembershipRevision(value: unknown): number;
/** Behavioral scope follows the current roster, never the legacy shape label. */
export declare function resolveConversationPolicyScope(memberIdsOrCount: unknown): 'direct' | 'group' | 'unknown';
export declare function buildConversationParticipantSummary(participants: readonly {
    userId: string;
    userType: unknown;
}[]): {
    participantTypes: Record<string, ConversationParticipantType>;
    participantSummary: ConversationParticipantSummary;
    isAgentChat: boolean;
};
/** Legacy fields are compatibility inputs to one conservative invitation policy. */
export declare function readConversationInvitationPolicy(data: {
    inboundPolicy?: unknown;
    groupJoinPolicy?: unknown;
} | null | undefined): CommunicationRule;