fix(lab): demote E40 to historical evaluation

apps/control-station/src/core/laboratory/e40CaseReview.ts

@@ -50,6 +50,11 @@ export interface E40CaseCatalog {
   access: "read-only";
 }
 
+/**
+ * Immutable v1 storage vocabulary. Product UI interprets these legacy values
+ * only as support/challenge of the E37 engineering label; neither value
+ * establishes physical ground truth or authorizes an operational model.
+ */
 export type E40OperatorVerdict = "confirmed-error" | "rejected-error";
 
 export interface E40OperatorDecision {