[FEATURE] Mobile app: preview/render artifacts (HTML, Markdown, React) generated in Claude Code sessions

Problem

When accessing a Claude Code session remotely through the Claude mobile app, files generated by the session (HTML prototypes, Markdown reports, React components, images) cannot be previewed or rendered on the phone. You can see that the file was created, but reviewing it requires going back to the desktop.

Use case

My workflow relies on Claude Code generating UI prototypes (HTML/CSS) and Markdown specs during long sessions. When I'm away from my desk and monitoring the session from mobile, I can't visually review the output to approve the next step — which defeats the purpose of remote access for design/review loops.

Proposed solution

• Render common artifact types inline in the mobile app: HTML (sandboxed preview), Markdown, images, PDF.
• At minimum: an "open file" / "download" action for generated files so they can be viewed in an external app.

Alternatives considered

• Asking Claude Code to take Playwright screenshots and describe them (indirect, slow).

Environment

• Claude Code via mobile app (remote session)
• Android