/**
 * Builds the model-facing description for the `Workflow` orchestration tool.
 *
 * Dynamic in the agent's callable agents:
 * - lists every callable agent by name (the built-in `agent` plus one per
 *   declared subagent and remote agent);
 * - the worked example uses only the built-in `agent`, so it is valid for any
 *   agent;
 * - a single simple subagent example is appended *only when* the agent has a
 *   declared subagent or remote agent (i.e. an agent other than `agent`).
 *
 * The exact input signatures auto-generated by `createCodeModeTool` are appended
 * after this framing.
 *
 * @param toolNames - Names of the agent functions callable inside the sandbox.
 */
export declare function workflowToolDescription(toolNames: readonly string[]): string;