GitHub Copilot Code Review Adds Org-Level Runner Controls, Content Exclusion, and Unlimited Custom Instructions

Summary

GitHub shipped three governance-oriented enhancements to Copilot code review. Organizations can now set a default runner at the organization level rather than configuring each repository individually, and can lock the setting to prevent per-repository overrides. Copilot code review now honors content exclusion settings at repository, organization, and enterprise levels, letting teams prevent Copilot from using specified files or directories during review. And the previous 4,000-character ceiling