import { type Hlc } from "../util/hlc.js";
export interface MachineLedgerRecord {
    machineId: string;
    alias: string;
    firstSeen: string;
    lastSeen: string;
    lastSync: string | null;
    accountIdentity: string | null;
    hlc: Hlc;
    seq: number;
    writerId: string;
}
export interface SyncObservedRecord {
    observerMachineId: string;
    vaultRid: string;
    sourceMachineId: string;
    throughHlc: Hlc;
    throughSeq: number;
    observedAt: string;
    publication: "online";
    hlc: Hlc;
    seq: number;
    writerId: string;
}
export interface PublishedMachineSnapshot {
    commitOid: string;
    machines: MachineLedgerRecord[];
    observations: SyncObservedRecord[];
}
export interface RegisterCurrentMachineArgs {
    podRoot?: string;
    nowIso?: string;
    accountIdentity?: string;
    hostname?: string;
    machineId?: string;
    hlcPath?: string;
}
export declare function getMachineLedgerDir(podRoot?: string): string;
export declare function sanitizeMachineAlias(value: string): string | null;
export declare function fallbackMachineAlias(machineId: string): string;
export declare function deriveInitialMachineAlias(machineId: string, hostnameOverride?: string): string;
export declare function listMachineShards(podRoot?: string): string[];
export declare function readAllMachineRecords(podRoot?: string): MachineLedgerRecord[];
export declare function parseMachineShardText(content: string, writerId: string, sourceFile: string): {
    machines: MachineLedgerRecord[];
    observations: SyncObservedRecord[];
};
export declare function foldMachines(records: readonly MachineLedgerRecord[]): Map<string, MachineLedgerRecord>;
export declare function readCurrentMachine(podRoot?: string, machineId?: string): MachineLedgerRecord | null;
export declare function readAllSyncObservedRecords(podRoot?: string): SyncObservedRecord[];
export declare function foldSyncObserved(records: readonly SyncObservedRecord[]): Map<string, SyncObservedRecord>;
export declare function appendSyncObserved(args: {
    podRoot?: string;
    vaultRid: string;
    sourceMachineId: string;
    throughHlc: Hlc;
    throughSeq: number;
    observedAt?: string;
    hlcPath?: string;
}): SyncObservedRecord | null;
export declare function appendSyncObservedForTest(args: Parameters<typeof appendSyncObserved>[0], observerMachineId: string): SyncObservedRecord | null;
export declare function registerCurrentMachine(args?: RegisterCurrentMachineArgs): MachineLedgerRecord;
export declare function updateCurrentMachineAlias(alias: string, args?: Omit<RegisterCurrentMachineArgs, "hostname">): MachineLedgerRecord;
export declare function recordCurrentMachineSyncSuccess(args?: Omit<RegisterCurrentMachineArgs, "hostname">): MachineLedgerRecord;
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