/**
 * Codespaces Keepalive Script Generator
 *
 * Generates a bash daemon script that keeps a Codespace alive by making
 * periodic SSH connections when the sudocode server is active.
 *
 * Codespaces detects SSH activity as "active usage", preventing auto-stop.
 * The daemon checks the sudocode log file modification time to determine
 * if the workspace is actively being used.
 *
 * @see i-7pia - Port Codespaces keepalive daemon from deprecated code
 * @see s-84xz - Codespaces Provider Implementation specification
 */
/**
 * Generate a keepalive daemon bash script for a Codespace.
 *
 * The script runs inside the codespace as a background process.
 * It checks the sudocode server log file every 30 seconds. If the log
 * has been modified within the idle timeout window, it makes an SSH
 * ping to keep the codespace from auto-stopping.
 *
 * Uses cross-platform `stat` (GNU Linux vs BSD/macOS) for mtime checks.
 *
 * @param codespaceName - The codespace name (used in SSH keepalive pings)
 * @param port - Sudocode server port (used to find the log file)
 * @param idleTimeoutMinutes - Minutes of inactivity before allowing auto-stop
 * @returns The full bash script as a string
 */
export declare function generateKeepaliveScript(codespaceName: string, port: number, idleTimeoutMinutes: number): string;
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