Identify pipeline entries in reports and diagnostics

internal/framework/outcomes/outcomes.go

@@ -16,6 +16,8 @@ const (
 // are scoped to a module instance, while batch indices are local to a validator
 // invocation within one section.
 type Reference struct {
+	StageIndex     *int          `json:"stage_index,omitempty"`
+	StageID        *string       `json:"stage_id,omitempty"`
 	ModuleKey      string        `json:"module_key"`
 	ModuleInstance string        `json:"module_instance"`
 	SectionIndex   int           `json:"section_index"`