Microsoft reportedly warns internally that GitHub faces existential risk as AI coding tools reduce hosting need

消息称微软内部示警：GitHub 面临生存级风险，AI 编程工具削弱托管必要性

Microsoft internally warned that GitHub faces an existential risk from AI coding assistants such as Cursor and Claude Code, and told some teams to stop using Claude Code by the end of June 2026 and move to GitHub Copilot CLI.

Why it matters: HKR-H/K/R all pass: the angle is sharp, the summary gives a Claude Code-to-Copilot CLI deadline, and the workflow stakes are real. Single-source “reported” framing and no Microsoft response keep it below the 85 must-write band.