[Bug]: Persistent HTTP 529 / “server cluster is currently under high load” errors in Hermes when using MiniMax M2.7

Calls to MiniMax M2.7 via Hermes repeatedly return HTTP 529 Overloaded errors even under moderate usage, and Hermes' retry logic keeps hitting the same error; the reporter asks whether this is a MiniMax-side capacity/routing issue. Issue is closed as fixed.