The Model Context Protocol dropped sessions this week. The spec got smaller, which looks like simplification until you notice what happened: the protocol stopped holding your state and handed the problem to your application code. We kept running into that same move putting this issue together. Agent reliability over a long task bends the wrong way on a curve. Review queues don't just back up. The work changes while it waits, so a reviewer inherits a different problem than the one submitted. The hard part keeps relocating to wherever you haven't built for it. This issue is about seeing where it went.