GitHub Copilot now generates roughly 46% of the code in files where it's active. Cursor and Claude Code are writing whole pull requests start to finish. The fastest growing commit type in 2026 is one no human actually typed , and the review process built for code typed by humans is buckling. Two things are breaking at once, and they compound. Problem 1. The Volume Surge A senior engineer used to type maybe 200 lines a day. An agent produces 2,000. Multiply that across a team and the review queue stops being a queue. It becomes a backlog you skim. Approvals get faster. Comments get shorter. The 40 minute diff now gets 90 seconds and an LGTM, because the next 14 PRs are stacked behind it. The review didn't get more lenient. The review disappeared . Anthropic flagged this exact bottleneck when launching Code Review for Claude Code (April 2026): review designed for human volumes can't absorb agent volumes. The old workflow assumed scarcity of code. We don't live there anymore. Problem 2.…