import type { ChannelSignalData } from "@/types";
/**
 * Formats a channel signal payload into a readable system message for agents.
 * Expects: data fields have already been validated.
 */
export declare function channelMessageBuild(data: ChannelSignalData): string;
/**
 * Safely parses channel signal data from a generic signal payload.
 * Returns: null when payload shape does not match ChannelSignalData.
 */
export declare function channelSignalDataParse(data: unknown): ChannelSignalData | null;
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