/**
 * Whether a question lifted out of an agent's reply earns its own decision
 * card, or is only tracked.
 *
 * The question is already in the agent's message in the owner's thread; a
 * card repeats it with buttons. Over 3.5 days (2026-10-13 → 10-16) the owner
 * got 142 cards, ~40 a day, most of them lifted: cut-off fragments
 * ("md、sending — 可以发吗？"), questions meant for another agent ("你们能在
 * 周五 9 点前回一句结论吗？"), a second card in a thread that already had one,
 * and two cards for one question in the same minute. A card is only worth it
 * when it is a clean question to the owner that he has not been carded on
 * already, and an agent gets only a few a day.
 *
 * Questions that fail the gate stay tracked (the owner answers in the
 * thread, as he does anyway); they just do not get a card.
 *
 * @module services/open-items/question-card-gate
 */
import type { OwnerDecision } from '../../types/decision.types.js';
/** Why a lifted question gets no card. */
export type CardSkipReason = 'one_card_per_message' | 'fragment' | 'for_someone_else' | 'thread_has_card' | 'same_as_recent' | 'daily_cap';
/** Input to {@link questionCardSkipReason}. */
export interface CardGateInput {
    /** The question as extracted from the reply */
    question: string;
    /** The question as the card would show it (may add its subject) */
    cardQuestion?: string;
    /** Asking agent's session */
    agent: string;
    /** Where the card would go (null/undefined: no Slack place) */
    place?: {
        slackChannelId: string;
        threadTs?: string;
    } | null;
    /** Decisions this agent asked in the last day (any kind, any status) */
    recent: readonly OwnerDecision[];
    /** Names of the agent's colleagues (to spot a question addressed to one of them) */
    colleagueNames?: readonly string[];
    /** Now */
    now: Date;
}
/**
 * Why this lifted question should not get a card, or null when it should.
 *
 * @param input - The question and what the agent asked recently
 * @returns The reason to skip the card, or null to post it
 */
export declare function questionCardSkipReason(input: CardGateInput): CardSkipReason | null;
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