[Feature]: Collapse chat status banners to their icon

[tcp404]

由社区分诊从 issue #3731 转入。原发起者 @szafranski

Feature Description

Allow ordinary warning, success, and error status banners in chat to collapse to their status icon. Clicking the icon restores the banner.

Problem Statement

Long status banners interrupt chat scanning, especially when they remain visible after the user has read them.

Proposed Solution

Make the existing status icon a clear accessible control. Banners remain expanded by default, collapse to the icon on click, and restore on a second click. Do not add a global preference.

Feature Category

UI/UX Improvement

Additional Context

This applies to ordinary plain-text status banners only. Permission requests and structured error cards should keep their current behavior.

原 issue：#3731

[tcp404]

@IceyLiu 这个提案是否可以采纳？想听下你的意见。

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@IceyLiu Could we accept this proposal? Would love your call on it.

[github-actions[bot]]

Thanks for posting! @IceyLiu will take a look soon. / 感谢发帖！@IceyLiu 会尽快跟进。