Update documentation for simplified responsibilities

docs/formats.md

@@ -426,6 +426,9 @@ references or explicit schema IDs rather than relying on that filename.
 `WithSchemaFile` exposes one schema under its base name. An unreadable,
 invalid, or unresolvable schema causes an operational validation error.
 Valid JSON that fails the schema instead yields a failed validation result.
+Schema documents are detached without applying the provider extra-parameter
+copy limits; this does not change the schema decoder, compiler, or
+self-contained-resource rules.
 
 ## Credentials