* fix: support OpenAI SDK 3.x while retaining 2.x compatibility
* fix: preserve HTTPX compatibility across OpenAI SDK versions
* refactor: trim OpenAI SDK compatibility patch
* refactor: simplify SDK client defaults
* test: cover SDK compatibility across provider routes
* fix: use shared names for SDK transport helpers
* fix: address SDK compatibility review feedback
* test(openai): send requests through the SDK API factory clients
* fix(exceptions): keep the provider response on PaymentRequiredError under httpx 2
* ci(base-sdk): count httpx2 as base-only when a base dependency brings it in
OpenAI SDK 3 depends on httpx2, so the litellm-core install at highest resolution pulls it in through openai. The base-only check now resolves the declared base dependency closure of litellm and litellm-core and accepts extras-only modules owned by a distribution inside that closure
* test: cover OpenAI SDK 3 client paths end to end and read SDK HTTP headers case-insensitively
* test: read C02 spend rows once, wait out the worker healthcheck on respawn, and resolve module owners on Python 3.10
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Co-authored-by: Marcus Wood <marcuswood@openai.com>
Co-authored-by: mateo-berri <277851410+mateo-berri@users.noreply.github.com>
