Closes the remaining QA-sweep gap on PR #27074: Bedrock Invoke
/v1/messages was silently ignoring ``reasoning_effort`` because the
shared param filter only kept native Anthropic keys, so every effort
tier collapsed to the same behavior on the wire (27/231 cells failing
across opus-4-5 / opus-4-6 / sonnet-4-6).
Map ``reasoning_effort`` to native Anthropic ``thinking`` /
``output_config.effort`` at the ``AnthropicMessagesConfig`` layer so
all four /v1/messages routes (direct Anthropic, Azure AI, Vertex AI,
Bedrock Invoke) inherit the same translation:
- Add ``reasoning_effort`` to ``AnthropicMessagesRequestOptionalParams``
so the param filter in
``AnthropicMessagesRequestUtils.get_requested_anthropic_messages_optional_param``
no longer drops it before the transformation runs.
- Add ``_translate_reasoning_effort_to_anthropic`` and call it from
``transform_anthropic_messages_request``. Mirrors
``AnthropicConfig.map_openai_params`` on the chat completion path
(re-uses ``_map_reasoning_effort`` and
``REASONING_EFFORT_TO_OUTPUT_CONFIG_EFFORT``) so the two routes
cannot drift. Pops ``reasoning_effort`` so it never reaches the wire.
- Caller-supplied native ``thinking`` / ``output_config.effort`` always
win — same precedence as
``_translate_legacy_thinking_for_adaptive_model``.
- Garbage values (``""``, ``"disabled"``, ``"invalid"``) raise
``AnthropicError(status_code=400)`` instead of falling through and
surfacing as 500s from the provider.
- ``"none"`` clears thinking + output_config so callers can opt out
per request.
Also restores the non-adaptive-model test coverage on Bedrock Invoke
/v1/messages that the previous commit lost when
``test_bedrock_messages_strips_output_config`` was renamed to the
``forwards`` variant on Opus 4.7.
Adds a new test file
``test_reasoning_effort_translation.py`` covering the translation at
the shared config level (adaptive + non-adaptive models, none, garbage,
caller precedence) so all four /v1/messages routes are exercised by a
single suite.
Adds parametrized + behavioral tests on the Bedrock Invoke /v1/messages
suite covering: minimal/low/medium/high/xhigh/max mapping for adaptive
models, thinking-budget mapping for non-adaptive Opus 4.5, ``none``
clears both, garbage raises 400, explicit ``output_config`` wins.
Refs: https://github.com/BerriAI/litellm/pull/27074
e400de4654