[Question]: Render User Input Messages as Markdown Format

## [Feature Request] Render User Input Messages as Markdown Format

### Problem Description

Currently, user input messages in the chat interface are displayed as plain text without Markdown rendering support (or perhaps I haven't found the correct setting). When input content contains Markdown syntax (such as headings, lists, code blocks, links, bold/italic formatting, etc.), these elements are displayed as raw text symbols, resulting in messy formatting and poor reading experience.

### Expected Solution

I suggest adding Markdown rendering support for user-sent messages, so that the rendering effect matches the format of AI assistant replies.

### Additional Notes

- In multi-turn conversations involving complex formatted input (such as pasting code snippets, structured lists, or document previews), this feature would greatly improve readability.
- Rendering user input not only enhances visual experience, but also makes the context display of the entire conversation more unified and coherent.

Thank you for the development team's hard work. I hope you will consider adopting this suggestion!