Handle links to room explorer artifacts (Playground)

[ckelly17]

Description

Creates a pathway and handling mechanism for playground model to create clickable links to artifacts in room explorer. This is most useful for citations and linking to generated outputs.

Changes Made

• Override URL sanitization in libs/ui/src/next/markdown.tsx to allow passing a custom prefix ("room://")
• Add custom link handling in packages/playground/src/components/message/response-message-text.tsx and packages/playground/src/components/message/response-message.tsx to allow links starting with room:// to open side panel instead of navigating out

How to Test

1. Upload a file to room explorer
2. Instruct model on how to create a link to that location. Ideally, this would be in a system prompt or some generalized instructions, but you can reproduce with a manual prompt (e.g., Provide citations in your response by prefixing "room://" to the hyperlink you create to the file path)
3. Click on link in chat. It should open the file explorer to the cited artifact.

Prompt

Result

Notes

This feature relies on specific prompting instructions to the LLM. It is not a generic solution. If links are rendered without the room:// prefix, current click behavior should not change

[github-actions]

@CodiumAI-Agent /update_changelog