feat: support extra_body for kimi/oai/anthropic

[xxchan]

• also pass kimi thinking config as extra_body

Signed-off-by: tianxiao [email protected]

[Copilot]

Pull request overview

This PR adds support for the extra_body parameter to multiple chat providers (Kimi, OpenAILegacy, OpenAIResponses, and Anthropic), allowing users to pass arbitrary provider-specific request fields. Additionally, it refactors how Kimi's thinking configuration is passed to use the extra_body mechanism.

• Added extra_body parameter support to Kimi, OpenAILegacy, OpenAIResponses, and Anthropic chat providers
• Refactored Kimi's thinking configuration to use thinking parameter (instead of reasoning_effort) which is injected via extra_body
• Added comprehensive test coverage for extra_body functionality across all affected providers

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/kosong/chat_provider/init.py	Defines the ExtraBody type alias for provider-specific request fields
src/kosong/chat_provider/kimi.py	Refactors thinking config to use thinking parameter passed via extra_body; adds extra_body support
src/kosong/contrib/chat_provider/openai_legacy.py	Adds extra_body parameter support to OpenAILegacy provider
src/kosong/contrib/chat_provider/openai_responses.py	Adds extra_body parameter support to OpenAIResponses provider
src/kosong/contrib/chat_provider/anthropic.py	Adds extra_body parameter support to Anthropic provider
tests/api_snapshot_tests/test_kimi.py	Updates test to reflect new thinking format; adds test for merging extra_body with thinking config
tests/api_snapshot_tests/test_openai_legacy.py	Adds test for extra_body functionality
tests/api_snapshot_tests/test_openai_responses.py	Adds test for extra_body functionality
tests/api_snapshot_tests/test_anthropic.py	Adds test for extra_body functionality
CHANGELOG.md	Documents the new extra_body support and Kimi thinking config changes

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[pvzheroes125]

@stdrc 现在是不是可以在Kcli config里面支持extra_body了（

---

@stdrc Is it possible to support extra_body in Kcli config now (

[stdrc]

@stdrc 现在是不是可以在Kcli config里面支持extra_body了（

@stdrc Is it possible to support extra_body in Kcli config now (

下个版本（

正准备发版了，来不及 review 了

---

@stdrc Is it possible to support extra_body in Kcli config now?

@stdrc Is it possible to support extra_body in Kcli config now (

next version (

It’s about to be released, it’s too late to review