The selector read raw cost-map dicts as `Mapping[str, Any]`. It now validates
each together_ai entry into a frozen Pydantic model and takes the two
capabilities as keyword booleans, so nothing in the helper is coarsely typed
or stringly addressed.
`together_ai/openai/gpt-oss-20b` was hardcoded in two live tests and is no
longer served, so both failed on a vendor catalog change rather than on
anything litellm did.
Both call sites now resolve the cheapest non-deprecated together_ai chat
entry at runtime, filtered on the capabilities the tests actually exercise,
mirroring what tests/e2e/llm_translation/test_together_ai_e2e.py already
does. The selector lives in tests/_live_test_helpers.py so both lanes share
one implementation.
* Fix remaining VCR live-call leaks
* test(vcr): dedupe live-test helpers and drop spurious kwargs
Extract the duplicated isVertexQuotaError/runVertexRequestOrSkip Vertex
quota-skip helpers into tests/pass_through_tests/vertex_test_helpers.js and the
duplicated _skip_live_prompt_caching_test guard into tests/_live_test_helpers.py
so each lives in one place. In test_aarun_thread_litellm, build a separate
message_data carrying role/content for add_message and a thread_data without
them for run_thread/run_thread_stream/get_messages, which no longer receive the
spurious message fields.
* test(overhead): assert mock transport is exercised in non-streaming and stream tests
