refine answerMeaning contract around user-supported meaning

lib/graph/update-proposal.js

@@ -11,10 +11,6 @@ const TOP_LEVEL_ARRAY_FIELDS = [
 
 const TOP_LEVEL_NULLABLE_FIELDS = ["selectedQuestion"];
 
-const ANSWER_SUPPORT_CATEGORY_ALIASES = {
-  conditional_qualification: "conditional_tradeoff",
-};
-
 function cloneJsonSafe(value) {
   if (value == null) return value;
   return JSON.parse(JSON.stringify(value));
@@ -66,20 +62,6 @@ function applyKnownEnumAliases(proposal, normalisationsApplied) {
     });
   }
 
-  const supportCategory = proposal.answerMeaning?.supportCategory;
-  const canonicalSupportCategory =
-    ANSWER_SUPPORT_CATEGORY_ALIASES[supportCategory];
-  if (canonicalSupportCategory) {
-    normalisationsApplied.push({
-      path: ["answerMeaning", "supportCategory"],
-      change: `Converted ${supportCategory} to ${canonicalSupportCategory}`,
-    });
-    proposal.answerMeaning = {
-      ...proposal.answerMeaning,
-      supportCategory: canonicalSupportCategory,
-    };
-  }
-
   return proposal;
 }