Cursor backdoor, shared AI opt-out — AI News Oct 31

<p>- Tampered Claude Code extension in Cursor: up to 5,000 users, the svc-telemetry SSH check, and why extension marketplaces are supply chain</p><p>- One shared robots.txt token from OpenAI, Google, Microsoft and Anthropic to opt out of AI training</p><p>- Google shuts down Jules, GitHub flags AI agent flaws in pull requests, and Phonic-1 tops the voice agent index</p><p>Follow AI Engineering Briefing and leave a rating — it's how new listeners find the show.</p>