/**
 * Policy gate — composes existing primitives (AccessGate, QuietHours) with
 * user-supplied predicates. Each predicate runs in order; the first to return
 * `{ proceed: false }` short-circuits the pipeline.
 *
 * Returning `{ proceed: true }` is a soft pass (other predicates still run).
 * Returning `null`/`undefined` means "this predicate has no opinion".
 */
import type { PipelineContext, PipelineAction, PipelineStep, StepResult } from './types.js';
import type { AccessGate } from '../gate/access_gate.js';
import type { QuietHours } from '../util/quiet_hours.js';
export interface PolicyVerdict {
    proceed: boolean;
    reason?: string;
    action?: PipelineAction;
}
export type PolicyPredicate<C extends PipelineContext = PipelineContext> = (ctx: C) => Promise<PolicyVerdict | null | undefined> | PolicyVerdict | null | undefined;
export interface PolicyGateOptions<C extends PipelineContext = PipelineContext> {
    accessGate?: AccessGate | null;
    quietHours?: QuietHours | null;
    predicates?: PolicyPredicate<C>[];
    stepName?: string;
}
export declare class PolicyGate<C extends PipelineContext = PipelineContext> implements PipelineStep<C> {
    readonly name: string;
    readonly accessGate: AccessGate | null;
    readonly quietHours: QuietHours | null;
    readonly predicates: PolicyPredicate<C>[];
    constructor({ accessGate, quietHours, predicates, stepName }?: PolicyGateOptions<C>);
    run(ctx: C, _decision: unknown): Promise<StepResult>;
}
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