[FEATURE]:Deepseek-V4 need a "disable thinking" button

[Dawn-Xu-helloworld]

Feature hasn't been suggested before.

• I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

https://api-docs.deepseek.com/guides/thinking_mode
in the docs it said
"(1) The thinking toggle defaults to enabled"
maybe we should set varint default 's thinking type into
{"thinking": {"type": "disabled"}}

[Piyushrathoree]

@rekram1-node hey hi I saw that you're already assigned to multiple issue. I was wondering If I can take this issue . thanks

[martinmr]

I took it upon myself to do this because the thinking in these models is driving me crazy and setting it to low is not enough of a fix.

[JinkaiNiu]

Same request here. It would be great to have a UI-level toggle (like a button in the TUI or a /thinking off\ command) to directly disable thinking mode without needing to edit config files or cycle through variants. This would benefit all models with reasoning support (DeepSeek, OpenAI o-series, GLM, etc.), not just DeepSeek V4.

[martinmr]

The fix is in #31795. My previous PR was autoclosed, which is not a cool thing to do. Please thumb up the new PR so that it's not autoclosed.