export interface CopilotSessionInfo {
    id: string;
    name: string;
    cwd: string;
    updated: number;
}
/** All Copilot sessions on this machine (newest first). `updated` is epoch ms
 *  from events.jsonl mtime (falls back to workspace.yaml / the folder mtime). */
export declare function listAllCopilotSessions(): CopilotSessionInfo[];
/** Copilot sessions whose cwd matches `root` (for per-workspace collectSessions). */
export declare function listCopilotSessions(root: string): Array<{
    id: string;
    title: string;
    updated: number;
}>;
export interface TranscriptMsg {
    role: 'user' | 'assistant' | 'system' | 'tool';
    text: string;
    ts?: number;
}
/** Parse a copilot session's events.jsonl into a normalized message array.
 *  Renders user/assistant prose, tool calls (assistant.message.toolRequests +
 *  tool.execution_complete results) and the system prompt (heavily truncated).
 *  Returns at most `limit` messages (the tail). */
export declare function readCopilotTranscript(id: string, limit?: number): TranscriptMsg[];