* feat(api-server): add Idempotency-Key support and request size limit; unify OpenAI error envelope * fix(api-server): include provider error message in 500 OpenAI error body --------- Co-authored-by: aydnOktay <xaydinoktay@gmail.com>
* feat(api-server): add Idempotency-Key support and request size limit; unify OpenAI error envelope * fix(api-server): include provider error message in 500 OpenAI error body --------- Co-authored-by: aydnOktay <xaydinoktay@gmail.com>