Migrate remaining legacy operator workflows

tests/Web/named-playlist-workflow.test.cjs

@@ -127,6 +127,28 @@ test("trusted entries serialize to the exact original seven LIST_TEXT fields", (
   ]);
 });
 
+test("legacy LIST_TEXT accepts a bounded 100-name VI subject beyond 256 characters", () => {
+  const names = Array.from(
+    { length: 100 },
+    (_, index) => `종목${String(index).padStart(3, "0")}`).join(",");
+  assert.ok(names.length > 256);
+  const fields = ["1", "", names, "5단 표그래프", "VI 발동(수동)", "1/20", ""];
+  const serialized = workflow.legacyListText(fields);
+  assert.ok(serialized.length <= 4000);
+  const response = workflow.normalizeLoadResponse(loadResponse([nativeRow({
+    groupCode: "",
+    subject: names,
+    graphicType: "5단 표그래프",
+    subtype: "VI 발동(수동)",
+    pageText: "1/20",
+    dataCode: ""
+  })]));
+  assert.equal(response.rawRows[0].subject, names);
+  assert.throws(() => workflow.legacyListText([
+    "1", "", "가".repeat(3990), "5단 표그래프", "VI 발동(수동)", "1/20", ""
+  ]), /too long/u);
+});
+
 test("database replacement requires trusted verification and enforces the 1000-row bound", () => {
   assert.throws(() => workflow.createReplaceRequest(
     "replace", "00000001", [trustedEntry()]), /trusted-entry verifier/i);