* feat: add new model provider PPIO

* fix: fix ppio model fetching

* fix: code lint

* reorder LLM
update interface for streaming and chats to use valid keys
linting

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Co-authored-by: timothycarambat <rambat1010@gmail.com>

fix:
docs(zh-CN): fix text and format issues in Chinese documentation

- Remove redundant punctuation and repeated words
- Standardize quotation marks format and remove unnecessary quotes
- Add and complete TTS and STT related translations

* feat: add new model provider: Novita AI

* feat: finished novita AI

* fix: code lint

* remove unneeded logging

* add back log for novita stream not self closing

* Clarify ENV vars for LLM/embedder seperation for future
Patch ENV check for workspace/agent provider

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Co-authored-by: Jason <ggbbddjm@gmail.com>
Co-authored-by: shatfield4 <seanhatfield5@gmail.com>

* Issue #1943: Add support for LLM provider - Fireworks AI

* Update UI selection boxes
Update base AI keys for future embedder support if needed
Add agent capabilites for FireworksAI

* class only return

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Co-authored-by: Aaron Van Doren <vandoren96+1@gmail.com>

add README.zh.md； 添加中文的readme文档；