import type { OccasionNudge } from './types.js';
/** Surfaces a proactive personal nudge is never delivered to. */
export declare const NUDGE_FORBIDDEN_SURFACES: readonly string[];
/** The delivery surface that means the agent's own conversation. */
export declare const NUDGE_AGENT_SURFACE = "agent";
/** The surface kind of one destination, lower-cased. */
export declare function nudgeDestinationSurface(destination: string): string;
/**
 * The channels a nudge may go to. Empty means pull-only.
 *
 * The setting is a comma-separated list, the same shape `payments.notifyChannels`
 * and the trigger backoff ladder use, because the owner's ruling was Telegram
 * AND the agent, and a single-valued setting would have made that a choice
 * between them. Each entry is `surfaceKind` or `surfaceKind:address`, matching
 * the channel delivery router's own form, so `telegram:12345,agent` is a valid
 * pair. Duplicates collapse: a list that names one destination twice must not
 * push the same nudge to it twice.
 *
 * The TUI is refused HERE rather than left unconfigured, because "nobody set it
 * to the TUI" is not the same guarantee as "it cannot be the TUI", and the
 * owner's ruling generalises beyond this feature: the TUI is a work interface,
 * and life-admin belongs on Telegram and the agent. A list that names the TUI
 * alongside real destinations loses the TUI entry and keeps the rest, the
 * exclusion is structural, not a reason to drop everything the owner asked for.
 */
export declare function resolveNudgeDestinations(channel: string): readonly string[];
/** The title and body a nudge takes on ONE destination. */
export interface NudgeDeliveryText {
    readonly title: string;
    readonly body: string;
}
/**
 * How a nudge reads when it arrives on a given destination.
 *
 * Every destination but one is a message channel, where an arriving message is
 * self-evidently a new message and `nudge.message` needs no frame. The agent's
 * own conversation is not a message channel: text placed into it is
 * indistinguishable from the conversation unless it says what it is. Delivered
 * bare, "Your mother's birthday is very close now." arrived mid-way through a session
 * about wake-word debugging and was simply spoken aloud, twice, as though it
 * were a thought the assistant had just had.
 *
 * So the agent gets the framed, self-contained notice and every other surface
 * gets the plain line. One function, so a new delivery path cannot get this
 * wrong by forgetting the special case, there is nowhere else to ask.
 */
export declare function nudgeDeliveryText(destination: string, nudge: OccasionNudge): NudgeDeliveryText;
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