Feature request: option to disable streamed response output

Summary

Add an option to disable real-time streaming of responses in the interactive CLI, instead displaying the complete response once generation finishes.

Motivation

Watching text stream token-by-token can be distracting and makes it harder to focus on other work while waiting for a response. A "batch" or "quiet" output mode would let users get the final result without the visual noise of incremental rendering.

Proposed solution

A configuration option (e.g., --no-stream flag or a streamResponse: false setting in settings.json) that buffers the response and displays it all at once when generation completes. A simple spinner or progress indicator could replace the streaming text while waiting.