Function createCoordinatedRelay

createCoordinatedRelay(options: CoordinatedRelayOptions): ServiceHandler
Create a coordinated relay service that combines relay pool and cache into a single ServiceHandler with dedup and unified EOSE.

On relay.subscribe: queries cache first, then subscribes to relay pool. Events are deduplicated by ID. EOSE is sent after both sources complete. On relay.publish: publishes to relay pool and stores in cache. On relay.close: cancels relay pool subscription.
Parameters
- options: CoordinatedRelayOptions
  Relay pool and cache implementations to coordinate
Returns ServiceHandler
A ServiceHandler ready for runtime.registerService('relay', handler)
Example
```
import { createCoordinatedRelay } from '@kehto/services';

const relay = createCoordinatedRelay({ relayPool: myPool, cache: myCache });
runtime.registerService('relay', relay);
```
- Defined in packages/services/src/coordinated-relay.ts:93