/**
 * SQLite backend for execution history.
 *
 * Alternative to the per-photon JSONL layout in `execution-history.ts`.
 * Upgrades daemon audit queries (`photon ps history --method X --since 1h`)
 * from whole-file scans to indexed range queries.
 *
 * Runtime-agnostic loader: `bun:sqlite` under Bun, `better-sqlite3` under Node.
 * Falls back to JSONL if neither is available.
 *
 * Single shared database across all photons on this daemon, keyed on the
 * `photon` column. Indexes cover the query shapes used by the CLI and the
 * Beam daemon panel.
 */
import type { ExecutionEntry, HistoryQuery } from './execution-history.js';
import { type SqliteDatabase } from '../shared/sqlite-runtime.js';
export declare function openExecutionHistoryDatabase(path: string): Promise<SqliteDatabase>;
export interface ExecutionHistoryBackend {
    record(photon: string, entry: ExecutionEntry, workingDir?: string): void;
    query(photon: string, q: HistoryQuery, workingDir?: string): ExecutionEntry[];
    sweep(opts?: {
        ttlMs?: number;
        maxPerMethod?: number;
        now?: number;
    }): number;
    close(): void;
}
export declare class SqliteExecutionHistoryBackend implements ExecutionHistoryBackend {
    private db;
    private opts;
    private insert;
    private deleteOlderThan;
    constructor(db: SqliteDatabase, opts?: {
        ttlMs?: number;
        maxPerMethod?: number;
    });
    record(photon: string, entry: ExecutionEntry, workingDir?: string): void;
    query(photon: string, q?: HistoryQuery, workingDir?: string): ExecutionEntry[];
    /**
     * Apply TTL + per-method cap across every photon.
     * Returns the number of rows deleted.
     */
    sweep(opts?: {
        ttlMs?: number;
        maxPerMethod?: number;
        now?: number;
    }): number;
    close(): void;
}
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