Add hooks execution logging to details panel

[pwang347]

See microsoft/vscode-copilot-chat#4336

[github-actions]

⚠️ API Proposal Version Change Detected

The following proposed API files have version changes: vscode.proposed.chatDebug.d.ts

API proposal version changes should only be used when maintaining compatibility is not possible. Consider keeping the version as is and maintaining backward compatibility.

Any version changes must be adopted by the consuming extensions before the next insiders for the extension to work.

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If the version change is required, comment /api-proposal-change-required to unblock this check and acknowledge that you will update any critical consuming extensions (Copilot Chat).

[Copilot]

Pull request overview

This PR extends the chat debug “resolved event details” pipeline to support structured hook-execution details, enabling richer rendering in the debug details panel and exposing the new content type through the chatDebug proposed API.

Changes:

• Adds a new resolved content type for hook execution details (hookType, command, input, output, result, timings, exit code, error message) and wires it through the ext host DTO/protocol.
• Implements a dedicated browser renderer + plain-text conversion and integrates it into the debug detail panel.
• Updates the internal “resolve debug event details” tool formatting and bumps the chatDebug proposal version.

Reviewed changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/vscode-dts/vscode.proposed.chatDebug.d.ts	Bumps proposal version and adds ChatDebugEventHookContent + union update.
src/vs/workbench/contrib/chat/common/tools/builtinTools/resolveDebugEventDetailsTool.ts	Adds plain-text formatting for resolved hook content.
src/vs/workbench/contrib/chat/common/chatDebugService.ts	Introduces internal IChatDebugEventHookContent and extends the resolved-content union.
src/vs/workbench/contrib/chat/browser/chatDebug/chatDebugHookContentRenderer.ts	New UI renderer + plain-text conversion for hook content.
src/vs/workbench/contrib/chat/browser/chatDebug/chatDebugDetailPanel.ts	Renders kind: 'hook' resolved content in the details panel.
src/vs/workbench/api/common/extHostTypes.ts	Adds ext host API class ChatDebugEventHookContent (with _kind).
src/vs/workbench/api/common/extHostChatDebug.ts	Serializes hookContent into the DTO (kind: 'hook').
src/vs/workbench/api/common/extHost.protocol.ts	Adds IChatDebugEventHookContentDto and extends IChatDebugResolvedEventContentDto.
src/vs/workbench/api/common/extHost.api.impl.ts	Exposes ChatDebugEventHookContent on the API surface.
src/vs/platform/extensions/common/extensionsApiProposals.ts	Bumps chatDebug proposal version to 4.

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[pwang347]

/api-proposal-change-required