import { type ExtensionAPI } from '@earendil-works/pi-coding-agent';
import { type PiGoalConfig, type ResolvedGoalConfig } from './config.js';
import { GoalState } from './goal-state.js';
import type { GoalModelRegistry } from './llm.js';
export type PiGoalExtensionConfig = PiGoalConfig;
/**
 * Dependencies for the goal engine — extracted so the engine is unit-testable
 * without a live ExtensionAPI.
 */
export interface GoalEngineDeps {
    state: GoalState;
    config: ResolvedGoalConfig;
    registry: GoalModelRegistry;
    sendUserMessage: (content: string) => void;
    notify: (message: string, level: 'info' | 'warning' | 'error') => void;
    setStatus: (text: string) => void;
    signal?: AbortSignal;
    /** Rough token accounting; defaults to a char-based estimate of the transcript. */
    estimateTokens?: (transcript: string) => number;
}
/**
 * Evaluate the active goal against the transcript and either stop (achieved /
 * impossible / limited) or inject a continuation message. Idempotent guard: the
 * caller must ensure only one invocation runs at a time (see extension wiring).
 */
export declare function runGoalEngine(deps: GoalEngineDeps, messages: unknown[]): Promise<'achieved' | 'impossible' | 'continued' | 'budget_limited' | 'iteration_limited' | 'skipped'>;
export default function goalExtension(pi: ExtensionAPI, injectedConfig?: PiGoalExtensionConfig): void;
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