import { type PiContextSettings } from "../settings.js";
export type ResolvedThresholds = {
    reminder: number;
    reserve: number;
    warning: number;
};
/**
 * Pure derivation of the thresholds from Pi's reserve: the reminder fires at reserve
 * plus the pi-context margin, the warning steer at reserve plus WARNING_RUNWAY_TOKENS.
 * An invalid margin degrades to the default and reports one warning. Automatic
 * threshold/overflow handling is represented by reset lifecycle boundary drafts;
 * no compaction summary is generated.
 */
export declare function deriveThresholds(reserveTokens: number, margins: PiContextSettings): {
    thresholds: ResolvedThresholds;
    warnings: string[];
};
/** Countdown excludes the hidden warning runway; unknown usage stays unknown. */
export declare function remainingBudget(remaining: number | null, warning: number): number | null;