import type { CallOptions, ILlm, IRequestLogger, Message, OrchestratorError, Result } from '@mcp-abap-adt/llm-agent';
/**
 * Translate a RAG query to English for search purposes. Skips ASCII-only and
 * very short inputs. Module-scope so it can be injected as a strategy override.
 */
export declare function toEnglishForRag(deps: {
    helperLlm: ILlm | undefined;
    mainLlm: ILlm;
    ragTranslatePrompt?: string;
}, text: string, opts: CallOptions | undefined): Promise<string>;
/**
 * Summarize older history turns via the helper LLM, keeping the last 5 turns.
 * Module-scope so it can be injected as a strategy override.
 */
export declare function summarizeHistory(deps: {
    helperLlm: ILlm | undefined;
    requestLogger: IRequestLogger;
    historySummaryPrompt?: string;
}, h: Message[], opts?: CallOptions): Promise<Result<Message[], OrchestratorError>>;
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