feat: complete contract-driven business development and MySQL integration

contract/scalar.go

@@ -147,6 +147,10 @@ func responseSchema(n *node) *openapi.Schema {
 	b := base(n)
 	if b.scalar != nil {
 		s := wireSchema(b.scalar.JSONOutput)
+		s.Description = n.schema.Description
+		if b.scalar.JSONInput == b.scalar.JSONOutput {
+			s.Example = n.schema.Example
+		}
 		if n.typ.Kind() == reflect.Pointer {
 			s = nullableSchema(s)
 		}