import type { ActionDecision, ActionType, DecisionMode, HookEvent, LlmDecision } from './types.js';
/**
 * Renders a machine signal type as plain-language attribution (notifications
 * 2.10, Jason 2026-08-13): `EXTERNAL_STARLING_SCANNER` must never reach a
 * user's card — but the user should still learn WHICH of their scanners acted.
 *
 * The EXTERNAL_* token space is unbounded — it is minted from the user's own
 * scanner id (`EXTERNAL_${id.toUpperCase()}`, external-scanner.ts) — so this
 * must be a derivation, not a lookup: strip the prefix, de-snake, lowercase,
 * drop trailing "scanner"/"signals" noise words, and phrase it as
 * "Signal from your <name> scanner". Internal types come from the closed map
 * above; an unlisted internal type de-snakes to "<words> signal" so a new
 * scanner added without a map entry still renders as words, never as a token.
 */
export declare function friendlySignalAttribution(signalType: string): string;
export interface DecisionRequest {
    prompt?: string;
    context: Record<string, unknown>;
    model?: string;
    actionType: ActionType;
    event: HookEvent;
}
export interface DecisionStrategy {
    readonly mode: DecisionMode;
    decide(request: DecisionRequest): Promise<ActionDecision>;
}
export declare class DecisionEngine {
    private strategies;
    register(strategy: DecisionStrategy): void;
    decide(mode: DecisionMode, request: DecisionRequest): Promise<ActionDecision>;
}
export declare class LlmDecisionStrategy implements DecisionStrategy {
    private llmDecision;
    readonly mode: DecisionMode;
    constructor(llmDecision: LlmDecision);
    decide(request: DecisionRequest): Promise<ActionDecision>;
}
export declare class RuleDecisionStrategy implements DecisionStrategy {
    readonly mode: DecisionMode;
    private warnedMissingReason;
    private resolveReason;
    decide(request: DecisionRequest): Promise<ActionDecision>;
}
export declare class NoDecisionStrategy implements DecisionStrategy {
    readonly mode: DecisionMode;
    decide(request: DecisionRequest): Promise<ActionDecision>;
}
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