openclaw - 💡(How to fix) Fix [UX] 思考过程（reasoning）在回复完成后自动消失，无法回顾 / Reasoning text disappears after response completes

问题描述 / Issue Description

在与 OpenClaw 对话时，模型输出分为两个阶段：思考过程（reasoning/思维链）和最终回复。在流式输出过程中，思考过程会短暂显示。但回复完成后，思考过程被自动折叠或隐藏，只保留最终结论。用户无法回顾模型的推理过程。

When chatting with OpenClaw, the model output is split into two phases: reasoning (chain of thought) and the final reply. During streaming, the reasoning text briefly appears, but once the response is complete, the reasoning is collapsed or hidden, leaving only the final conclusion. Users cannot review the model's reasoning process.

根本原因 / Root Cause

前端 UI 在流式输出完成后，默认隐藏或折叠 reasoning 块。没有提供"始终显示"的选项。

The frontend UI defaults to hiding or collapsing the reasoning block after streaming completes. There is no option to keep it always visible.

期望行为 / Expected Behavior

• 提供一个控制项（开关/按钮），让用户选择是否始终显示思考过程，而不是完成后自动隐藏。

• 或者至少完成后可以手动展开回顾。

• Provide a toggle/button to let users choose to always show the reasoning process instead of auto-hiding after completion.

• At minimum, allow manual expansion after completion for review.

影响范围 / Affected

• Control UI / WebChat 消息渲染区域
• Control UI / WebChat message rendering area

相关 Issue / Related

• #79456 — 流式回复自动滚动导致阅读焦点丢失（同属 UX 系列问题）

环境 / Environment

• OpenClaw (Homebrew)
• macOS (Darwin arm64)
• WebChat / direct conversation