/**
 * The ONE exit for an auto-mode classification that could not RULE (`unavailable`: the classifier leg failed, or its
 * per-level budget ran out) — shared by both classifier stations, the leg's gate and an ancestor's frozen classifier
 * in the policy fold, so the rule is written once.
 *
 * ONE fork, on the APPROVAL SEAT (does an ask this station hands on reach a person — a live approver, or a durable
 * park): with one, the ask goes on, its text saying why auto mode is asking, and a person decides; without one, the
 * call is refused with CC's `x1t` sentence and the classification's FORM (`unavailable`) is attested on the deny. The seat is
 * the only input to the fork — not the cause, not the mode. The handed-on ask carries `requiresRealApproval`: no
 * automatic lane may answer it in the classifier's stead — not a blanket `onAsk:"allow"`, not the sandbox admission, not a
 * budget resolver over its park (the park mints the non-budgetable kind). CC refuses either way; asking where a person can be
 * asked is a declared departure (a classifier that is slow or down must not turn an attended session into a string
 * of refusals). Neither arm is a block: the denial limit counts classifier RULINGS, and a person's refusal of the
 * handed-on ask is a person's, not the classifier's.
 *
 * The observer hears every such classification with where the call went, except while the call is being aborted — a halt,
 * or the run's end (the classifier did not fail; the call ended). It is observe-only: a throw never changes the arm.
 */
import { type AutoModeClassifierRound, type AutoModeUnavailableCause } from "./auto-mode.js";
import { type PermissionResult, type ToolCallRequest } from "./tool-policy.js";
/** Where an `unavailable` classification sent the call: `asked` = on to the approval seat, `denied` = refused. */
export type ClassifierUnavailableDisposition = "asked" | "denied";
/** What the stations' observer receives — the facts the `classifier.unavailable` notice is composed from. */
export interface ClassifierUnavailableInfo {
    toolName: string;
    toolCallId: string;
    cause: AutoModeUnavailableCause;
    disposition: ClassifierUnavailableDisposition;
}
export type ClassifierUnavailableObserver = (info: ClassifierUnavailableInfo) => void;
/** The station's two facts for the fork: whether an ask it hands on reaches a person (`true` only — anything else is
 *  no seat), and who hears it. */
export interface ClassifierUnavailableSeat {
    approvalSeat?: boolean;
    onUnavailable?: ClassifierUnavailableObserver;
}
/** The arm the fork chose: the ask to hand on, or the refusal. */
export type ClassifierUnavailableArm<A> = {
    kind: "asked";
    ask: A;
} | {
    kind: "denied";
    deny: PermissionResult;
};
export declare function classifierUnavailableArm<A extends Extract<PermissionResult, {
    action: "ask";
}>>(args: {
    ask: A;
    req: ToolCallRequest;
    cause: AutoModeUnavailableCause;
    /** The ladder's attribution, for the refusal's sentence (it names both rungs when the ladder moved). */
    attribution?: AutoModeClassifierRound;
    seat: ClassifierUnavailableSeat | undefined;
    /** The call is being aborted (its per-call signal — a halt, or the run's end): the observer is not told (the arm is chosen
     *  as ever). */
    aborted: boolean;
}): ClassifierUnavailableArm<A>;