/**
 * daemon/trace-log.ts — In-memory ring buffer for message delivery traces.
 *
 * Captures end-to-end message trace events so delivery problems can be
 * diagnosed via the trace_log IPC handler.
 */
export interface TraceEntry {
    traceId: string;
    timestamp: number;
    event: string;
    sessionId?: string;
    content_preview?: string;
    details?: Record<string, unknown>;
}
/**
 * Add a trace entry. Oldest entry is evicted once the buffer exceeds MAX_ENTRIES.
 */
export declare function addTrace(entry: Omit<TraceEntry, "timestamp">): void;
/**
 * Return a copy of all trace entries in insertion order (oldest first).
 */
export declare function getTraces(): TraceEntry[];
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