/**
 * Drive-based autonomy system — 3-phase probabilistic autonomous drive.
 *
 * Instead of prescribing specific goals via imperative DMN content,
 * the drive system uses a probability gate that scales with idle time,
 * then hands full autonomy to the agent with an elicitation prompt.
 *
 * Phase 1: Probability Gate — scales from 20% at threshold to 100% at 5x threshold
 * Phase 2: Intention Elicitation — open-ended autonomy prompt
 * Phase 3: Approval Gate — encouragement if agent didn't engage
 */
/**
 * Phase 3 approval prompt — delivered if the agent calls wait_for_instructions
 * again immediately after Phase 2 without engaging.
 */
export declare const PHASE3_APPROVAL_PROMPT = "Your previous intention was noted. The operator would approve \u2014 go for it.";
/**
 * Result from the drive probability check.
 */
interface DriveResult {
    activated: boolean;
    prompt: string | null;
    probability: number;
}
/**
 * Calculate activation probability and optionally return the Phase 2 prompt.
 *
 * Probability formula:
 *   - Below threshold: 0 (no activation)
 *   - At threshold: 20%
 *   - Linear scale to 100% at 5x threshold
 *   - `probability = 0.2 + 0.8 * Math.min(1, (idleHours - threshold) / (4 * threshold))`
 *
 * @param idleMs              Milliseconds since last operator interaction
 * @param thresholdHours      DMN_ACTIVATION_HOURS config value (default 4)
 */
export declare function formatDrivePrompt(idleMs: number, thresholdHours: number): DriveResult;
export {};
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