/**
 * Configuration for the temporary upload staging system.
 * All values have sensible defaults; override via environment variables
 * or constructor injection.
 */
export interface IStagingConfig {
    /** Filesystem directory for staged files */
    stagingDir: string;
    /** Default TTL in seconds (default: 3600 = 1 hour) */
    defaultTtlSeconds: number;
    /** Maximum TTL in seconds (default: 86400 = 24 hours) */
    maxTtlSeconds: number;
    /** Maximum upload file size in bytes (default: 52428800 = 50MB) */
    maxFileSizeBytes: number;
    /** Cleanup interval in milliseconds (default: 300000 = 5 minutes) */
    cleanupIntervalMs: number;
}
export declare const DEFAULT_STAGING_CONFIG: IStagingConfig;
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