Migrate remaining legacy operator workflows

Web/trading-halt-workflow.js

@@ -117,6 +117,48 @@
     return 0;
   }
 
+  function tradingHaltIdentity(value) {
+    const normalized = normalizeTradingHalt(value);
+    return normalized ? `${normalized.market}\u0000${normalized.stockCode}` : "";
+  }
+
+  function nextTradingHaltNameSort(direction) {
+    return direction === "descending" ? "ascending" : "descending";
+  }
+
+  function compareCanonicalText(left, right) {
+    if (left < right) return -1;
+    if (left > right) return 1;
+    return 0;
+  }
+
+  function sortTradingHaltsForDisplay(values, direction) {
+    if (!Array.isArray(values)) throw new TypeError("Trading-halt display rows are required.");
+    if (direction !== null && direction !== "ascending" && direction !== "descending") {
+      throw new TypeError("Trading-halt name sort must be ascending, descending, or null.");
+    }
+    if (direction === null) return [...values];
+
+    const nameDirection = direction === "ascending" ? 1 : -1;
+    return values.map((value, sourceIndex) => {
+      const normalized = normalizeTradingHalt(value);
+      if (!normalized) throw new TypeError("A valid trading-halt display row is required.");
+      return { value, normalized, sourceIndex };
+    }).sort((left, right) => {
+      const nameOrder = compareCanonicalText(
+        left.normalized.displayName,
+        right.normalized.displayName);
+      if (nameOrder !== 0) return nameOrder * nameDirection;
+
+      const marketOrder = compareCanonicalText(left.normalized.market, right.normalized.market);
+      if (marketOrder !== 0) return marketOrder;
+      const stockCodeOrder = compareCanonicalText(
+        left.normalized.stockCode,
+        right.normalized.stockCode);
+      return stockCodeOrder !== 0 ? stockCodeOrder : left.sourceIndex - right.sourceIndex;
+    }).map(item => item.value);
+  }
+
   function normalizeTradingHaltSearchResponse(value, expectedRequest) {
     if (!hasExactKeys(value, [
       "requestId", "query", "retrievedAt", "totalRowCount", "truncated", "results"
@@ -349,6 +391,9 @@
     tradingHaltActions: actions,
     normalizeTradingHalt,
     normalizeTradingHaltResult: normalizeTradingHalt,
+    tradingHaltIdentity,
+    nextTradingHaltNameSort,
+    sortTradingHaltsForDisplay,
     createTradingHaltSearchRequest,
     normalizeTradingHaltSearchResponse,
     normalizeTradingHaltError,