Cognition killed Windsurf overnight and shipped Devin Desktop. The IDE is now an agent manager.

I opened my editor expecting an editor. What I should have expected, after the June 2 OTA update, was a Kanban board.

Cognition pushed an over-the-air update that reopened Windsurf as Devin Desktop. Not a rebrand. A reframe. The thing is no longer "an editor with AI bolted on," it's an "agent manager" where you watch and direct work instead of typing it. Under the hood: Devin Local, a Rust rewrite of Cascade that's about 30% more token-efficient and ships with subagents. Cascade itself gets deprecated July 1. The bigger move is the Agent Client Protocol (ACP), which lets Claude Agent, Codex, OpenCode, and 25-plus ACP-compatible agents run natively in the same view and share context through Spaces. Plans and pricing didn't change.

The Rust rewrite cutting tokens ~30% is the kind of unglamorous infrastructure work that actually compounds. But ACP is the story. We've been pretending the "which coding agent do you use" question has one answer. It doesn't. I use Claude Code for most things, reach for Codex on certain refactors, and I'd happily run a cheap open-weight agent for bulk work if the harness made it painless. ACP is a bet that the harness should be agent-agnostic and the agents should be hot-swappable. That matches where I think this goes.

Connect this to the MiniMax story. If open weights are now competitive, you want a surface that lets you point different agents at different tasks without rebuilding your workflow each time. Devin Desktop's Kanban-of-agents and ACP's shared-context Spaces are one concrete answer to "how do I orchestrate a fleet."

What builders should do: if you live in Windsurf, the July 1 Cascade deprecation is a real deadline, go read the migration notes now rather than getting surprised. Everyone else should watch ACP adoption. A genuinely open agent-client protocol that multiple vendors implement would be the most useful standard to emerge from this cycle, more useful than any single model release. I'm skeptical it stays open if it wins. But I want it to.