Option to disable letter-by-letter streaming of assistant responses in interactive mode

In recent versions of Claude Code, assistant responses render token-by-token (letter-by-letter) in the interactive terminal UI. In earlier versions, responses appeared to display as complete messages (or complete paragraphs) at once.

Request: Add a settings.json option (e.g. "streamOutput": false or "bufferResponses": true) to restore the old behavior — buffer the full response and display it at once, or at least per-paragraph.

Why: The continuous letter-by-letter motion is visually taxing / causes eye strain for some users over long sessions. prefersReducedMotion: true appears to only affect spinners, not the response text streaming.

Platform: Windows 11, Claude Code CLI (interactive mode).