/**
 * Swap ledger — one line per executed on-chain swap, at ~/.blockrun/swaps.jsonl.
 * The swap tools (0x on Base, Jupiter on Solana) append here on success so the
 * desktop wallet view can show a "swaps" history with explorer links. Mirrors
 * the JSONL pattern of cost-log / audit. All writes are best-effort.
 */
export interface SwapRow {
    ts: number;
    chain: 'base' | 'solana';
    dex: string;
    sellSym: string;
    sellAmount: number;
    buySym: string;
    buyAmount: number;
    txHash: string;
    explorer?: string;
}
export declare function appendSwap(row: SwapRow): void;
export declare function readSwaps(limit?: number): SwapRow[];