[FEATURE] Auto-copy selected text to clipboard in chat panel

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

When selecting/highlighting text in the Claude Code chat panel (VS Code extension), it would be useful to have an option to automatically copy the selection to the clipboard.

Proposed Solution

Add a VS Code setting (e.g. claudeCode.chat.autoCopySelection) to enable/disable this behavior, when enabled, any text selected in the chat panel is automatically copied to the clipboard.

Alternative Solutions

_No response_

Priority

Low - Nice to have

Feature Category

Developer tools/SDK

Use Case Example

When reviewing responses in the chat panel, users often want to copy code snippets or parts of the output. Having to manually press Cmd+C / Ctrl+C after selecting is a minor friction point — auto-copy on selection (similar to terminal behavior) would improve the workflow.

Additional Context

_No response_