/**
 * Process-identity primitives for authoritative job ownership and PID-reuse
 * protection. Ownership must NEVER rely on PID alone.
 */
export interface ProcessIdentityInfo {
    pid: number;
    /** Command line (cmdline joined with spaces). */
    commandLine: string;
    /** Start identity: epoch seconds (POSIX) or creation timestamp (Windows). */
    startIdentity?: number;
    alive: boolean;
}
/**
 * Read authoritative identity for a PID on the current platform. Never trusts
 * PID alone.
 */
export declare function readProcessIdentity(pid: number): Promise<ProcessIdentityInfo>;
export declare function isWindowsPlatform(): boolean;
/** Verify a live PID matches a recorded identity (executable + start time). */
export declare function identityMatches(live: ProcessIdentityInfo, expected: {
    commandIdentity?: string;
    processStartIdentity?: number;
}): {
    match: boolean;
    reason?: string;
};
export declare const readFileUtf8: (p: string) => Promise<string | null>;
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