[BUG] GPU Corrupted Cache = Black Screen

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

An Electron app that loses its renderer to a corrupted GPU cache and just sits there showing a black screen no detection, no auto-purge, no crash dialog is a real gap. The cache is regenerable; there's no reason a failed renderer init shouldn't trigger a cache clear and reload automatically rather than dumping an unhandled promise rejection to a log the user never sees.

What Should Happen?

Renderer should detect GPU-context/cache failure and auto-purge + reload instead of silent black screen.

Error Messages/Logs

Claude macOS version goes into black screen and stops responding. Even restarts do not fix the issue.

Steps to Reproduce

Launch app, work for a few minutes and it goes black and stops responding.

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Version 1.12603.1 (3df4fd)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_