import type { LanguageModel } from 'ai';
import type { AgentConfig } from '../types/agentConfig.js';
import type { TurnControl } from '../types/channel.js';
import type { RunState } from './durable/types.js';
import type { RunStore } from './durable/RunStore.js';
import { type HostGuardVerdict, type ClassifyHostOptions } from './select.js';
export type { HostGuardVerdict };
export declare function startHostControlGuard(options: {
    agent: AgentConfig;
    run: RunState;
    model: LanguageModel;
    classify?: (opts: ClassifyHostOptions) => Promise<HostGuardVerdict>;
    emit?: (part: import('../types/stream.js').StreamPart) => void;
    abortSignal?: AbortSignal;
    runStore?: RunStore;
}): Promise<HostGuardVerdict>;
export declare function isValidControl(control: TurnControl, agent: AgentConfig, run: RunState): boolean;
export declare function isValidGuardVerdict(verdict: HostGuardVerdict, agent: AgentConfig, run: RunState): boolean;
export declare function guardVerdictToControl(verdict: HostGuardVerdict): TurnControl | undefined;
/**
 * Main model control wins when valid. The guard is a forgot-to-route net, NOT a
 * second-guesser: it only overrides when the answering model produced neither a
 * control tool NOR a substantive answer (`mainAnswered`). If the model answered,
 * the answer stands — a guard verdict must not hijack a correct keep answer
 * (which caused observed mis-routes of Q&A turns into flows).
 */
export declare function resolveHostControl(mainControl: TurnControl | undefined, guardVerdict: HostGuardVerdict | undefined, agent: AgentConfig, run: RunState, mainAnswered: boolean): TurnControl | undefined;