GitHub's Enhanced PR Review AI Exposes the Multi-Repo Visibility Gap

GitHub's Copilot Chat has reached general availability, bringing intelligent code review directly into pull requests with side-by-side diffs and inline editing. However, this advancement reveals a fundamental structural limitation: individual PR tools cannot see across the organization's entire repository ecosystem. As Gartner's 2026 report confirms, the real bottleneck has shifted from code generation to coordination and governance—teams that win will be those with visibility across all repositories, not just better feedback within each PR.