Shared context layers are becoming a first-class primitive for agent fleets.

Devin Desktop's Spaces and Cursor's Mission Control both point at the same shape: instead of each agent rebuilding context cold, a persistent shared layer holds repo index, current PR, files, and prior session state for every agent assigned to it (Devin). This shifts multi-agent coordination from prompt-passing to shared-state, cutting redundant exploration tokens and keeping parallel agents consistent. The practical move: one Space per feature branch, every agent assigned to it. Context built once, reused, not rediscovered per session. I'd bet this "context-as-shared-object" model spreads across most harnesses by Q3.