export type WhiteboardScope = 'chat' | 'project' | 'custom';
export interface WhiteboardMeta {
    id: string;
    title: string;
    scope: WhiteboardScope;
    larkAppId?: string;
    chatId?: string;
    workingDir?: string;
    createdFromSessionId?: string;
    createdAt: string;
    updatedAt: string;
    archived?: boolean;
}
export interface WhiteboardBindingInput {
    larkAppId?: string;
    chatId?: string;
    workingDir?: string;
}
export interface EnsureWhiteboardInput extends WhiteboardBindingInput {
    sessionId?: string;
    title?: string;
}
export interface WhiteboardSummary extends WhiteboardMeta {
    path: string;
    preview: string;
    logCount: number;
}
export declare function whiteboardEnabled(): boolean;
export declare function whiteboardsRoot(): string;
export declare function whiteboardBoardPath(id: string): string;
export declare function whiteboardLogPath(id: string): string;
export declare function normalizeWhiteboardWorkingDir(workingDir?: string): string | undefined;
export declare function whiteboardBindingKey(input: WhiteboardBindingInput): string;
export declare function getWhiteboard(id: string): WhiteboardMeta | undefined;
export declare function ensureDefaultWhiteboard(input: EnsureWhiteboardInput): WhiteboardMeta;
export declare function createWhiteboard(input: EnsureWhiteboardInput & {
    id?: string;
    scope?: WhiteboardScope;
}): WhiteboardMeta;
export declare function listWhiteboards(): WhiteboardSummary[];
export declare function readWhiteboard(id: string, opts?: {
    allowDisabled?: boolean;
    missingAsEmpty?: boolean;
}): string;
export declare function writeWhiteboard(id: string, content: string, opts?: {
    actor?: string;
    kind?: string;
    expectedUpdatedAt?: string;
}): WhiteboardMeta;
export declare function appendLog(id: string, entry: {
    kind: string;
    actor?: string;
    to?: string;
    content?: string;
}): void;
export declare function deleteWhiteboard(id: string): {
    ok: true;
    id: string;
    clearedSessions: number;
};
export declare function whiteboardPath(id: string): {
    dir: string;
    board: string;
    log: string;
    meta: string;
};
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