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OmniRoute/tests
Xiangzhe a9028e9571 fix(stream): suppress </think> close marker for Responses API clients (#7747)
* fix(stream): suppress `</think>` close marker for Responses API clients

The Claude→OpenAI `</think>` close marker (#4633) exists for Chat
Completions clients that scan content for the marker (Claude Code /
Cursor). On the openai-responses path the responsesTransformer already
maps reasoning_content to structured reasoning items, so the marker has
no consumer and leaks verbatim into response.output_text.delta —
observed in production with kimi-coding (k3): thinking renders
correctly while a stray `</think>` sits at the start of the assistant
text (up to 6 consecutive markers when the upstream also emits stray
close-tag text deltas).

resolveSuppressThinkClose() gains a clientResponseFormat option that
always suppresses the marker for openai-responses, winning over both
the UA allowlist and an explicit keep header (no legitimate marker
consumer exists in the Responses format). chatCore passes the format
through, and ExecuteInput now carries clientResponseFormat so the two
executors that do their own Claude→OpenAI translation apply the same
policy: GLM's Anthropic transport and zed-hosted's Anthropic backend
(which previously applied no suppression at all, not even the #5245
UA/header policy).

Chat Completions behavior is unchanged (#4633 / #5123 / #5245 / #5312).

* refactor(executors): extract helpers to keep execute/executeTransport under the complexity cap

Co-authored-by: diegosouzapw <8016841+diegosouzapw@users.noreply.github.com>

---------

Co-authored-by: Diego Rodrigues de Sa e Souza <diegosouza.pw@gmail.com>
Co-authored-by: xz-dev <xz-dev@users.noreply.github.com>
Co-authored-by: diegosouzapw <8016841+diegosouzapw@users.noreply.github.com>
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