animations for reasoning and tool calls inside reasoning

[justschen]

working.animations.mov

[Copilot]

Pull request overview

This PR adds animations and UI enhancements for reasoning and tool calls during chat thinking/reasoning operations. It introduces a shimmer effect for working messages and a rotating set of status messages to provide better visual feedback during model reasoning.

Changes:

• Added CSS shimmer animation effect for the working spinner label
• Implemented rotating working status messages ("Thinking...", "Processing...", etc.)
• Updated collapse button icon logic to show different icons based on streaming state and expand/collapse status
• Added persistent working spinner element that appears during streaming and is removed when complete

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 4 comments.

File	Description
chatThinkingContent.css	Added keyframe animation for shimmer effect and CSS rules for the working spinner element with shimmer styling
chatThinkingContentPart.ts	Added working messages array, spinner element lifecycle management, DOM insertion logic to keep spinner at bottom, and updated collapse button icon behavior

Comments suppressed due to low confidence (1)

src/vs/workbench/contrib/chat/browser/widget/chatContentParts/chatThinkingContentPart.ts:1062

• Extra blank line should be removed. A single blank line is sufficient for separation between code blocks.

[Copilot]

Pull request overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.