import type { ChatStorage } from "./chat-storage.js";
import type { ChatExportRecord } from "./types/chat.js";
export type ChatComplianceSelection = {
    kind: "thread";
    tenantId: string;
    workspaceId: string;
    threadId: string;
} | {
    kind: "task";
    tenantId: string;
    workspaceId: string;
    taskId: string;
} | {
    kind: "run";
    tenantId: string;
    workspaceId: string;
    taskId: string;
    runId: string;
};
export interface ChatComplianceActor {
    actorId: string;
    role: string;
}
export interface ChatComplianceExportResult {
    selection: ChatComplianceSelection;
    exportedAt: string;
    records: ChatExportRecord[];
    markdown: string;
    auditEventId: string;
}
export interface ChatComplianceDeleteResult {
    selection: ChatComplianceSelection;
    deletedThreads: string[];
    deletedMessages: string[];
    auditEventId: string;
}
export interface ChatComplianceServiceOptions {
    workspaceRoot: string;
    storage?: ChatStorage;
    now?: () => string;
}
export declare class ChatComplianceService {
    private readonly workspaceRoot;
    private readonly storage;
    private readonly files;
    private readonly now;
    constructor(options: ChatComplianceServiceOptions);
    exportEvidence(input: {
        selection: ChatComplianceSelection;
        actor: ChatComplianceActor;
        includeTombstoned?: boolean;
    }): Promise<ChatComplianceExportResult>;
    deleteScope(input: {
        selection: ChatComplianceSelection;
        actor: ChatComplianceActor;
        reasonCode: string;
    }): Promise<ChatComplianceDeleteResult>;
    private resolveSelection;
}
export declare function auditArtifactFileName(prefix: "export" | "delete"): string;