import type { SandboxRunner } from './runner.js';
export interface SandboxDetectionResult {
    runner: SandboxRunner;
    available: boolean;
    backend: 'bubblewrap' | 'container' | 'none';
}
/**
 * Detect the available sandbox backend for this platform.
 *
 * If a runner is explicitly configured, only that runner is tried.
 * If it is unavailable, detection returns unavailable — no fallback.
 *
 * If no runner is configured (auto mode):
 * - Linux: try bubblewrap first, then container
 * - macOS/other: try container runtime only
 *
 * If nothing is available, return available=false.
 */
export declare function detectSandboxAvailability(options?: {
    preferredRunner?: 'bubblewrap' | 'container';
}): SandboxDetectionResult;
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