When calculating app target, attempt to autodetect from advertised capabilities if not specified in url (#649)

Author: andrewmcgivery

Cargo.lock

@@ -47,7 +47,7 @@ regex = "1.11.1"
 reqwest-middleware = "0.4.2"
 reqwest-tracing = { version = "0.5.8", features = ["opentelemetry_0_30"] }
 reqwest.workspace = true
-rmcp = { version = "0.14", features = [
+rmcp = { version = "0.16", features = [
   "server",
   "transport-io",
   "transport-streamable-http-server",