/** Helpers for mid-turn user steering via OpenCode prompt_async. */
export type OpencodeSessionMessage = {
    info?: {
        id?: string;
        role?: string;
    };
    parts?: Array<{
        type?: string;
        text?: string;
        state?: {
            status?: string;
        };
    }>;
};
export declare function normalizeSteeringContent(content: string): string;
export declare function midTurnSteeringKey(id: string | undefined, content: string): string;
export declare function extractUserMessageText(msg: OpencodeSessionMessage): string;
/** True when an assistant message after the matching user text has substantive output. */
export declare function userMessageHasAssistantReply(messages: OpencodeSessionMessage[], userContent: string): boolean;
export declare function fetchOpencodeSessionMessages(attachUrl: string, opencodeSessionId: string, cwd?: string): Promise<OpencodeSessionMessage[]>;
/**
 * After a turn ends, re-queue mid-turn steering messages that prompt_async accepted
 * but OpenCode never answered (e.g. blocked on long-running bash).
 */
export declare function releaseUnansweredMidTurnMessages(attachUrl: string, opencodeSessionId: string, midTurnInjected: Map<string, string>, queue: string[], wake: () => void, sidecarAnsweredKeys?: Set<string>): Promise<void>;