import type { Route, RouterReason } from "./types.js";
/**
 * Triggers from the OpenClaw SDK that mean "not a user-initiated turn".
 *
 * Sourced from `PluginHookAgentContext.trigger` in the OpenClaw plugin SDK:
 * `"user" | "heartbeat" | "cron" | "memory"`.
 */
export declare const NON_USER_TRIGGERS: Set<string>;
export interface HeuristicInput {
    /** The extracted user query (already trimmed and length-validated). */
    query: string;
    /** Trigger from `PluginHookAgentContext`. May be undefined on legacy SDKs. */
    trigger?: string;
    /** Whether the messageProvider indicates the local CLI test harness. */
    isCli?: boolean;
}
export interface HeuristicVerdict {
    route: Route | null;
    reason: RouterReason;
}
/**
 * Decide a route from cheap signals only. Returns `route: null` when the
 * input is ambiguous and a classifier (or `ALL` fallback) should take over.
 *
 * NOTE: there are no keyword fast-paths for WORLD_ONLY / EXPERIENCE_ONLY
 * in this version. The reason: distinguishing those two routes reliably
 * requires semantic understanding (a question CAN reference past
 * conversation without using the word "remember"), and a buggy keyword
 * rule would mis-route real questions. Operators who want fine routing
 * configure the classifier with the 4-class labels.
 */
export declare function heuristicRoute(input: HeuristicInput): HeuristicVerdict;