import type { ConversationBinding, ConversationRef, ExternalPrincipalKey } from './types.js';
export type SessionLeaseTarget = {
    kind: 'bound';
    binding: Readonly<ConversationBinding>;
} | {
    kind: 'construction';
    sessionId: string;
    conversation: ConversationRef;
    principal: ExternalPrincipalKey;
    workspace: string;
    agentPreset: string;
    generation: number;
    previous?: Readonly<ConversationBinding>;
};
export interface SessionLease {
    sessionId: string;
    holderId: string;
    fencingToken: number;
    leaseUntil: number;
}
export type SessionLeaseClaim = {
    kind: 'claimed';
    lease: SessionLease;
} | {
    kind: 'busy' | 'unknown' | 'denied';
};
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