/**
 * OpenAI Fetch Wiring
 *
 * Pulled out of openai.ts as its own function, tested directly against a
 * mocked `fetch`, for the same reason `resolveOpenAIRequestConfig` lives in
 * its own file - several route tests `mock.module()` the whole `./openai`
 * module process-wide for the test run (Bun's module mocks are not scoped to
 * the file that set them), which would make a behavioral test against the
 * real `callOpenAI` from that same specifier flaky depending on file
 * execution order. A distinct specifier that nothing else mocks stays real.
 */
/** Issue the chat-completions request, aborting once `timeoutMs` elapses. */
export declare function fetchOpenAIChatCompletion(apiUrl: string, headers: Record<string, string>, body: unknown, timeoutMs: number): Promise<Response>;