export type VoiceRecordingCaptureState = "capturing" | "stopped" | "discarded";
export type VoiceRecordingUploadState = "pending" | "syncing" | "retrying" | "complete";
export type VoiceRecordingTranscriptionState = "pending" | "transcribing" | "retrying" | "complete";
export type VoiceRecordingFinalizationState = "pending" | "transcript-ready" | "handed-off";
export type VoiceRecordingChunkUploadState = "pending" | "syncing" | "complete";
export type VoiceRecordingRecoveryMode = "automatic" | "manual";
export type VoiceRecordingHandoffMode = "append" | "explicit";
export type VoiceRecordingManifest = {
    version: 1;
    recordingId: string;
    workspaceId: string;
    createdAt: string;
    updatedAt: string;
    mimeType: string;
    codec: string | null;
    captureState: VoiceRecordingCaptureState;
    uploadState: VoiceRecordingUploadState;
    transcriptionState: VoiceRecordingTranscriptionState;
    finalizationState: VoiceRecordingFinalizationState;
    /** Whether safe server reconciliation should continue without another user action. */
    recoveryMode: VoiceRecordingRecoveryMode;
    /** Delayed/recovered results require explicit insertion instead of mutating an uncertain draft. */
    handoffMode: VoiceRecordingHandoffMode;
    /** Tab/process lease. A different owner may take over only after this heartbeat is stale. */
    ownerId: string | null;
    ownerHeartbeatAt: string | null;
    /** Authoritative provider result, persisted before any composer draft mutation. */
    transcriptText: string | null;
    nextChunkNumber: number;
    chunkCount: number;
    totalBytes: number;
    totalDurationMilliseconds: number;
};
export type VoiceRecordingChunk = {
    recordingId: string;
    chunkNumber: number;
    capturedAt: string;
    startMilliseconds: number;
    durationMilliseconds: number;
    mimeType: string;
    codec: string | null;
    byteLength: number;
    sha256: string;
    uploadState: VoiceRecordingChunkUploadState;
    audio: Blob;
};
export type PersistVoiceRecordingChunkInput = {
    recordingId: string;
    ownerId?: string | undefined;
    chunkNumber: number;
    capturedAt: string;
    startMilliseconds: number;
    durationMilliseconds: number;
    mimeType: string;
    audio: Blob;
};
export type PersistVoiceRecordingChunkResult = {
    manifest: VoiceRecordingManifest;
    chunk: VoiceRecordingChunk;
    deduplicated: boolean;
};
export interface VoiceRecordingStore {
    createManifest(manifest: VoiceRecordingManifest): Promise<void>;
    getManifest(recordingId: string): Promise<VoiceRecordingManifest | null>;
    listRecoverableManifests(workspaceId: string, ownership?: {
        ownerId: string;
        staleBefore: string;
    }): Promise<VoiceRecordingManifest[]>;
    claimManifest(recordingId: string, ownerId: string, claimedAt: string, staleBefore: string): Promise<VoiceRecordingManifest>;
    listChunks(recordingId: string): Promise<VoiceRecordingChunk[]>;
    persistChunk(input: PersistVoiceRecordingChunkInput): Promise<PersistVoiceRecordingChunkResult>;
    updateManifest(recordingId: string, update: Partial<Pick<VoiceRecordingManifest, "captureState" | "uploadState" | "transcriptionState" | "finalizationState" | "ownerId" | "ownerHeartbeatAt" | "transcriptText" | "recoveryMode" | "handoffMode">>, updatedAt: string, ownerId?: string | undefined): Promise<VoiceRecordingManifest>;
    discard(recordingId: string, ownerId?: string | undefined): Promise<void>;
    cleanupHandedOffManifests(ownership: {
        ownerId: string;
        staleBefore: string;
    }): Promise<number>;
    close(): Promise<void>;
}
export declare class VoiceRecordingStorageUnavailableError extends Error {
    constructor();
}
export declare class VoiceRecordingNotFoundError extends Error {
    constructor(recordingId: string);
}
export declare class VoiceRecordingChunkConflictError extends Error {
    constructor(recordingId: string, chunkNumber: number);
}
export declare class VoiceRecordingChunkSequenceError extends Error {
    constructor(expected: number, received: number);
}
export declare class VoiceRecordingOwnedError extends Error {
    constructor(recordingId: string);
}
export declare function createVoiceRecordingManifest(input: {
    recordingId: string;
    workspaceId: string;
    mimeType: string;
    createdAt: string;
    ownerId?: string | null | undefined;
}): VoiceRecordingManifest;
export declare function prepareVoiceRecordingChunk(input: PersistVoiceRecordingChunkInput): Promise<VoiceRecordingChunk>;
export declare function planVoiceRecordingChunkCommit(input: {
    manifest: VoiceRecordingManifest;
    chunk: VoiceRecordingChunk;
    existingChunk: VoiceRecordingChunk | null;
}): PersistVoiceRecordingChunkResult;
export declare class IndexedDbVoiceRecordingStore implements VoiceRecordingStore {
    private readonly database;
    constructor(options?: {
        indexedDB?: IDBFactory | null;
        databaseName?: string;
    });
    createManifest(manifest: VoiceRecordingManifest): Promise<void>;
    getManifest(recordingId: string): Promise<VoiceRecordingManifest | null>;
    listRecoverableManifests(workspaceId: string, ownership?: {
        ownerId: string;
        staleBefore: string;
    }): Promise<VoiceRecordingManifest[]>;
    claimManifest(recordingId: string, ownerId: string, claimedAt: string, staleBefore: string): Promise<VoiceRecordingManifest>;
    listChunks(recordingId: string): Promise<VoiceRecordingChunk[]>;
    persistChunk(input: PersistVoiceRecordingChunkInput): Promise<PersistVoiceRecordingChunkResult>;
    updateManifest(recordingId: string, update: Partial<Pick<VoiceRecordingManifest, "captureState" | "uploadState" | "transcriptionState" | "finalizationState" | "ownerId" | "ownerHeartbeatAt" | "transcriptText" | "recoveryMode" | "handoffMode">>, updatedAt: string, ownerId?: string | undefined): Promise<VoiceRecordingManifest>;
    discard(recordingId: string, ownerId?: string | undefined): Promise<void>;
    cleanupHandedOffManifests(ownership: {
        ownerId: string;
        staleBefore: string;
    }): Promise<number>;
    close(): Promise<void>;
}