Document invocation reporting contracts

doc.go

@@ -1,6 +1,7 @@
 // Package commandkit provides the core instance-owned CLI dispatcher, typed
 // command declarations, application-owned command and flag aliases, input
-// bindings, and invocation outcomes. New and App.Register accept canonical
+// bindings, invocation-scoped reporting, and outcomes with separate operation
+// causes and presentation observations. New and App.Register accept canonical
 // Command declarations and RoutingRule declarations together. Optional
 // integration modules provide ConfigKit and PromptKit-specific commands;
 // importing those modules does not install their commands.