export type ToolOutcomeKind = "timeout" | "success" | "other-error";
export interface TimeoutToolOutcome {
    toolName: string;
    argsKey: string;
    kind: ToolOutcomeKind;
}
export interface TimeoutHoldState {
    heldSnapshotKey?: string;
    fingerprint?: string;
    streak: number;
}
export declare function toResultText(result: unknown): string;
export declare function classifyToolOutcome(isError: unknown, text: string): ToolOutcomeKind;
export declare function canonicalArgsKey(args: unknown): string;
export declare function turnTimeoutFingerprint(outcomes: readonly TimeoutToolOutcome[]): string | null;
export declare function decideTimeoutHold(prev: TimeoutHoldState, turn: {
    snapshotKey: string;
    fingerprint: string | null;
}): {
    hold: boolean;
    next: TimeoutHoldState;
};