* fix: add language field to CartesiaTTSConfiguration and pass to TTS service
Closes#432
* chore: regenerate OpenAPI spec to fix drift-check
The openapi.json snapshot had drifted from the FastAPI app definition
because main gained new organization endpoints (billing, credits,
context) after this branch was created. Regenerate it with
'python -m scripts.dump_docs_openapi' to bring it back in sync.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* chore: clarify Cartesia language schema
---------
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-authored-by: Abhishek Kumar <abhishek@a6k.me>
