Document field-level resolution and matched sequence history

inspection.go

@@ -46,6 +46,7 @@ type Explanation struct {
 // or historical path, hiding sensitive information. History follows processing
 // order: inheritance appears after source combination and before the transition
 // to typed values. Unknown and malformed paths return false.
+// Surviving registered records use their matched resolution-entry history.
 func (r *Result[T]) Explain(path Path) (Explanation, bool) {
 	if r == nil {
 		return Explanation{}, false