/**
 * Suggestion Engine — evaluates signals and prints a single suggestion.
 *
 * Runs after signal collection on increment closure.
 * Prints at most one suggestion per closure, picking the highest-confidence qualifying signal.
 *
 * @module core/skill-gen/suggestion-engine
 */
export declare class SuggestionEngine {
    private projectRoot;
    constructor(projectRoot: string);
    /**
     * Evaluate signals and print a suggestion if one qualifies.
     * Never throws — all errors are caught and logged.
     */
    evaluate(): Promise<void>;
    private loadConfig;
}
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