Setting to collapse or hide the streamed reasoning (thinking) text

[julian826]

Problem

While a Claude thread is working, T3 Code streams the model's full reasoning text under the "Working for Ns" header. For long threads this is a wall of the model debating itself, and it pulls attention away from the actual decisions and tool actions.

The Claude desktop app and the Claude Code CLI handle this differently: they show a single collapsed line ("Working for 30s", or a one-line summary) and hide the reasoning text unless you expand it.

Request

A client setting, e.g. Settings > Appearance > Reasoning display, with options like:

• Full (current behaviour)
• Collapsed by default (one header line, click to expand)
• Hidden (no reasoning text at all, only tool activity and assistant messages)

This is the inverse of #12149 ("keep thinking expanded by default"), so a single enum setting would serve both camps.

Environment

• T3 Code 0.1.7, Windows 11 desktop app
• Provider: Claude Agent (Claude Code)
• Checked: no such option in Settings or client-settings.json; themes are colour-only, so there is no CSS workaround.