Module coordinator 

Coordinator — lightweight gateway that manages worker registration, routing, and health monitoring.

Can run as:

• Standalone binary: soma-coordinator --token sk-xxx --port 9090
• Embedded: Coordinator::new().start_local() for development

The coordinator does NOT execute plans. It:

1. Accepts worker registrations (with capabilities + heartbeats)
2. Authenticates connections via bearer token
3. Routes client plan submissions to appropriate workers
4. Forwards worker events back to the client

Structs

WorkerRegistry

The worker registry — tracks all known workers and their status.

WorkerStatus

Status of a registered worker.