Give long-horizon agents a message-gateway plus per-task sandboxed filesystem, as ByteDance DeerFlow does out of the box

GitHub·medium signal

DeerFlow (trending near the top of GitHub today) structures hours-long tasks around a message gateway for inter-subagent communication plus a per-task sandbox where each agent gets a full filesystem view (skills, workspace, uploads, outputs). The message gateway decouples subagent coordination from the lead's context window, and the sandboxed workspace is where durable artifacts live across the run. For builders hitting context saturation on multi-hour jobs, the pattern to steal is 'route agent messages through a gateway, persist work to a shared filesystem' rather than threading everything through one prompt.