/**
 * Model resolution: exact match ("provider/modelId") with fuzzy fallback.
 */
export interface ModelEntry {
    id: string;
    name: string;
    provider: string;
}
export interface ModelRegistry<T extends ModelEntry = ModelEntry> {
    find(provider: string, modelId: string): T | undefined;
    getAll(): T[];
    getAvailable?(): T[];
}
/** Manually invalidate the model cache (e.g. after registry mutation). */
export declare function invalidateModelCache(): void;
/**
 * Resolve a model identifier to a registered model.
 *
 * Attempts an exact "provider/modelId" match against available models, then falls back to a fuzzy search over provider, id, and name.
 *
 * @param input - The model identifier or search query
 * @param registry - Registry to resolve the model from
 * @returns The matched model of type `T` if found, otherwise an error message string that lists available models
 */
export declare function resolveModel<T extends ModelEntry>(input: string, registry: ModelRegistry<T>): T | string;