* feat(core): add gpt-5.3-codex model support Add OpenAI gpt-5.3-codex model: context window overrides, model pricing and capabilities, none-reasoning-effort support, and test config. 🐾 Generated with [Letta Code](https://letta.com) Co-Authored-By: Letta <noreply@letta.com> * just stage-api && just publish-api --------- Co-authored-by: Letta <noreply@letta.com>