Fix MCP hangs and add logging

stub/Cargo.toml

@@ -10,3 +10,7 @@ tokio = { version = "1.53.1", features = ["full"] }
 tokio-util = { version = "0.7.19", features = ["io"] }
 futures-util = "0.3.34"
 tokio-tungstenite = "0.21.0"
+tracing-appender = "0.2.5"
+tracing = "0.1.44"
+tracing-subscriber = "0.3.23"
+dirs = "7.0.0"