interface AgentRule {
    priority: string;
    id: string;
    rule: string;
}
export declare class AgentRulesService {
    private projectRoot;
    private cachePath;
    private cachedRules;
    constructor(projectRoot: string);
    /**
     * Returns agent rules synchronously.
     * Uses cached rules if fresh, otherwise returns fallback and triggers a background refresh.
     */
    getRules(): {
        rules: AgentRule[];
        source: "cache" | "fallback";
        cache_age_hours?: number;
    };
    /**
     * Force-refresh the cache from GitHub. Returns the refreshed rules or null on failure.
     */
    refresh(): Promise<AgentRule[] | null>;
    private loadCache;
    private refreshInBackground;
    private fetchAndCache;
    private parseRulesFromReadme;
    private httpGet;
}
export {};
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