Add reasoning controls to lms chat

[will-lms]

Summary

• Add lms chat --reasoning auto|on|off for session-level reasoning control.
• Default auto leaves the SDK enableThinking value unset.
• on and off explicitly pass enableThinking: true / false to chat predictions.
• Add /reasoning in the interactive TUI to view or change the active session mode.

Validation

• npx turbo run build --filter=@lmstudio/lms-cli...

[will-lms]

$ lms chat -p hello
The user said "hello".
Acknowledge the greeting and offer assistance.
"Hello! How can I help you today?" (Keep it concise as per system instructions).Hello! How can I help you today?

$ lms chat -p hello --reasoning on
The user said "hello".
Acknowledge the greeting and offer assistance.

    *   "Hello! How can I help you today?"
    *   "Hi there! What's on your mind?"
Keep it concise as per system instructions.Hello! How can I help you today?

$ lms chat -p hello --reasoning off
Hello! How can I help you today?

[will-lms]

Use of /reasoning on|off|auto

[will-lms]

Automated Review:

No findings.

[rugvedS07]

I see that there is some change in behavior of how suggestions are handled, can you attach a video?

[will-lms]

I see that there is some change in behavior of how suggestions are handled, can you attach a video?

Screenshots already above. What do you want a video of?