import type { ContextEngine, ContextEngineInfo, AssembleResult, CompactResult, IngestResult, PluginLogger } from "./types.js";
import { type BrvBridgeConfig } from "@byterover/brv-bridge";
/**
 * ByteRoverContextEngine integrates ByteRover as an OpenClaw context engine
 * via the brv-bridge standard interface.
 *
 * Lifecycle mapping:
 *   - afterTurn  → bridge.persist() (feed conversation turns for curation)
 *   - assemble   → bridge.recall()  (retrieve curated knowledge as system prompt addition)
 *   - ingest     → no-op (afterTurn handles batch ingestion)
 *   - compact    → not owned (runtime handles compaction via legacy path)
 */
export declare class ByteRoverContextEngine implements ContextEngine {
    readonly info: ContextEngineInfo;
    private readonly bridge;
    private readonly logger;
    private readonly baseCwd;
    constructor(config: BrvBridgeConfig, logger: PluginLogger);
    ingest(_params: {
        sessionId: string;
        message: unknown;
        isHeartbeat?: boolean;
    }): Promise<IngestResult>;
    afterTurn(params: {
        sessionId: string;
        sessionKey?: string;
        sessionFile: string;
        messages: unknown[];
        prePromptMessageCount: number;
        isHeartbeat?: boolean;
    }): Promise<void>;
    assemble(params: {
        sessionId: string;
        sessionKey?: string;
        messages: unknown[];
        tokenBudget?: number;
        prompt?: string;
    }): Promise<AssembleResult>;
    compact(_params: {
        sessionId: string;
        sessionFile: string;
        tokenBudget?: number;
        force?: boolean;
    }): Promise<CompactResult>;
    dispose(): Promise<void>;
}
/**
 * Serialize agent messages into a human-readable text block for curation.
 *
 * - User messages: strip metadata noise, attribute with sender name + timestamp
 * - Assistant messages: strip <final>/<think> tags
 * - toolResult messages: skipped (internal implementation details)
 */
export declare function serializeMessagesForCurate(messages: unknown[]): string;
/** Extract text from string content or ContentBlock[] arrays. */
export declare function extractTextContent(content: unknown): string;
/**
 * Extract the latest user message text to use as the brv query.
 * Strips OpenClaw metadata so brv receives only the actual question.
 */
export declare function extractLatestUserQuery(messages: unknown[]): string | null;