/**
 * Minimum spacing between botmux-generated Ctrl+C writes.
 *
 * Oh My Pi treats two Ctrl+C events within 500 ms as an exit gesture. Keep a
 * small margin so backend recovery and adapter cleanup cannot accidentally
 * terminate the CLI when consecutive transport failures happen quickly.
 */
export declare const TERMINAL_CANCEL_COOLDOWN_MS = 550;
export type CriticalInterruptKey = 'ctrlc' | 'esc';
export declare function isCriticalInterruptKey(key: string): key is CriticalInterruptKey;
/**
 * Deliver an interrupt-class terminal key with one bounded retry.
 *
 * Duplicate C-c / Escape is safer than silently claiming a stopped CLI while
 * an ambiguous transport keeps it running. Other navigation keys deliberately
 * stay outside this helper and retain best-effort semantics.
 */
export declare function sendCriticalControlKey(key: CriticalInterruptKey, sendOnce: () => void | boolean, wait?: (ms: number) => Promise<void>): Promise<boolean>;
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