/**
 * [WHO]: TeamTranscriptWriter
 * [FROM]: Depends on node:fs/promises, node:path
 * [TO]: Consumed by team-runtime.ts
 * [HERE]: extensions/builtin/team/team-transcript.ts - per-teammate JSONL transcripts
 *
 * Per refactor plan §B.7: each teammate keeps an independent transcript file
 * for offline observation and debugging. Format is JSONL — one entry per
 * line — under `<storageDir>/transcripts/<teammateId>.jsonl`.
 *
 * Writes are best-effort and never throw into the runtime hot path.
 */
export interface TranscriptEntry {
    timestamp: number;
    kind: "leader" | "teammate" | "event";
    content: string;
    meta?: Record<string, unknown>;
}
export declare class TeamTranscriptWriter {
    private readonly dir;
    private dirReady;
    constructor(storageDir: string);
    private ensureDir;
    private fileFor;
    /** Append one entry to the teammate's transcript. Never throws. */
    append(teammateId: string, entry: TranscriptEntry): Promise<void>;
    /** Remove a teammate's transcript file (called on terminate). */
    remove(teammateId: string): Promise<void>;
    /** Storage directory used for transcripts. */
    get directory(): string;
}