/**
 * The `Mention` shape every parser reads, plus small Feishu inbound helpers
 * that used to live next to the gate.
 *
 * The helpers are deliberately access-control-free: `isBotSenderType`
 * classifies a `sender_type` field, and `isBotMentioned` checks an @-mention
 * list against the bot's own open_id. Both are pure functions with no
 * dependency on persisted access state (which lives in the host's channel
 * layer now).
 */
/** One @-mention inside an inbound Feishu message. */
export interface Mention {
    /** The placeholder token (e.g. `@_user_1`) used in the message text. */
    key: string;
    /** Resolved identity of the mentioned party. */
    id?: {
        open_id?: string;
        union_id?: string;
        user_id?: string;
    };
    /** Display name of the mentioned party. */
    name?: string;
}
/**
 * True when `senderType` identifies a Feishu bot or app.
 * Feishu uses `'bot'` for cross-bot messages and `'app'` for custom-bot
 * messages in some event contexts; both are non-human senders.
 */
export declare function isBotSenderType(senderType: string | undefined): boolean;
/** True when one of `mentions` resolves to the bot's own open_id. */
export declare function isBotMentioned(mentions: Mention[] | undefined, botOpenId: string | undefined): boolean;
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