[FEATURE] VS Code extension: Render submitted user messages as Markdown in chat

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

I use markdown syntax all the time when I chat with Claude using the VS Code Claude Code plugin, especially the syntax for code, code block and unordered/ordered lists.
The markdown syntax for the user chat text is not being rendered as markdown.
That makes the chat more difficult to read in two scenarios:

1. During when I'm writing the chat message.
2. Later when scrolling back in a chat to read past chats quickly.

Proposed Solution

I would like the user text to render markdown for at least code, code block, unordered list and ordered list, just like you web UI does. An even more extensive markdown support would of course be even better.
Maybe a toggle button would be good for users who do not want the rendered markdown.

Alternative Solutions

_No response_

Priority

Low - Nice to have

Feature Category

Developer tools/SDK

Use Case Example

_No response_

Additional Context

_No response_