/**
 * Write the plugin shim into opencode's plugin dir, re-exporting our factory
 * from the given absolute dist/plugin.js path. Returns the shim path.
 */
export declare function writeShim(pluginJsAbsPath: string): Promise<string>;
/** True if our shim is present in opencode's plugin dir. */
export declare function pluginInstalled(): Promise<boolean>;
/** Remove our shim (leaving any other plugins untouched). Returns true if removed. */
export declare function removeShim(): Promise<boolean>;