import type { AgentEngineStatusResult } from "../agent/engine-status.js";
import type { AgentEngineEntry } from "../agent/engine/registry.js";
export declare const AGENT_CHAT_AI_SETUP_REQUIRED_CODE: "AGENT_CHAT_AI_SETUP_REQUIRED";
export declare function isBuilderChatSetupReady(input: {
    oauthSessionUsable?: boolean;
    privateKey?: string | null;
    publicKey?: string | null;
    legacyPrivateKey?: string | null;
}): boolean;
/**
 * Chat accepts the Builder gateway/OAuth lane, a usable BYOK API key, or a
 * configured OpenAI-compatible/Ollama endpoint, or a usable personal ChatGPT
 * subscription account. Engine selection by itself is not readiness.
 */
export declare function isAgentChatAiSetupReady(input?: {
    status?: AgentEngineStatusResult;
    detectFromUserSecrets?: () => Promise<AgentEngineEntry | null>;
}): Promise<boolean>;
export declare function isAgentChatAiSetupRequiredError(error: unknown): error is {
    statusMessage?: string;
    message?: string;
};
export declare function requireAgentChatAiSetup(): Promise<void>;
/**
 * Queue edits that only remove unchanged messages remain available so a user
 * can clear work after disconnecting AI. Adds, edits, malformed entries, and
 * reordering are chat input and require the same setup as a direct send.
 */
export declare function queuedMessagesNeedAgentChatAiSetup(existingThreadData: string, incomingMessages: unknown[]): boolean;