Prepare reusable CLI override batches

internal/engine/override_apply.go

@@ -20,16 +20,16 @@ func (a *assemblyAccumulator) applyOverrides(sources []SourceInfo, overrides []O
 	if len(overrides) == 0 {
 		return cloneSourceInfos(sources), nil
 	}
-	prepared, allSources, diagnostics := prepareOverrides(a.current, sources, overrides, rule, limits)
+	batch, diagnostics := prepareOverrides(a.current, sources, overrides, rule, limits)
 	if len(diagnostics) != 0 {
-		return allSources, diagnostics
+		return batch.sources, diagnostics
 	}
-	for _, override := range prepared {
+	for _, override := range batch.overrides {
 		applyPreparedOverride(a.current, override, &a.index)
 		a.current.inputBytes += override.bytes
 		a.current.inputNodes += override.nodes
 	}
-	return allSources, nil
+	return batch.sources, nil
 }
 
 func applyPreparedOverride(result *composedDocument, override preparedOverride, index *mappingIndex) {