fixing pane in client for accounting + debug optimizations to run

README.md

@@ -20,8 +20,18 @@ libraries.
 Server and client:
 
 ```
-cargo watch --why -x 'run --package server -- server'
-cargo watch -x 'run --package client -- client'
+cargo watch-server
+cargo watch-client
+```
+
+These aliases only watch each application's local dependency tree. They build
+through Cargo, then run the binary separately so concurrent tests can reuse the
+same build cache.
+
+To connect a client to a second server instance, override its gRPC endpoint:
+
+```
+GRPC_ENDPOINT='http://[::1]:50052' cargo watch-client
 ```
 
 Client with tracing: