import type { RpcClient } from "../rpc/rpc-client.ts";
import type { RpcSlashCommand } from "../rpc/rpc-types.ts";
export type RemoteCommandsListener = (commands: readonly RpcSlashCommand[]) => void;
/**
 * Tracks the engine child's slash-command catalog (extension commands, prompt
 * templates, and skills) for the isolated interactive host.
 *
 * When {@link isolateInteractiveHost} is on, `main.ts` loads no extensions in
 * the host session, so `session.extensionRunner.getRegisteredCommands()` is
 * empty and interactive autocomplete would omit every extension command
 * (`/workflow`, `/workflows`, `/mcp`, …). The commands still live in the
 * engine child, which answers the `get_commands` RPC. This catalog fetches that
 * list asynchronously so it never blocks first paint or input, caches the last
 * good result, and notifies listeners so autocomplete can rebuild.
 *
 * A generation guard ensures a slow in-flight fetch cannot clobber the catalog
 * after a newer refresh (e.g. an engine restart) has already superseded it.
 */
export declare class RemoteCommandCatalog {
    private commands;
    private readonly listeners;
    private generation;
    private readonly client;
    constructor(client: RpcClient);
    getCommands(): readonly RpcSlashCommand[];
    onChange(listener: RemoteCommandsListener): () => void;
    /**
     * Kick off a best-effort catalog fetch. Fire-and-forget by design: the caller
     * (engine bind, restart, reload, new/resume/fork) must not await it.
     */
    refresh(): void;
}
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