Fix and harden race setup manager field visibility

src/app.js

@@ -3058,12 +3058,15 @@ function renderEventWorkspace(mode) {
     renderView();
   });
 
-  document.getElementById("eventEditForm")?.addEventListener("submit", (event) => {
-    event.preventDefault();
+  const commitEventEdit = () => {
     if (!editingEvent) {
       return;
     }
-    const form = new FormData(event.currentTarget);
+    const formNode = document.getElementById("eventEditForm");
+    if (!(formNode instanceof HTMLFormElement)) {
+      return;
+    }
+    const form = new FormData(formNode);
     const cleanedName = String(form.get("name") || "").trim();
     const cleanedDate = String(form.get("date") || "").trim();
     const cleanedClassId = String(form.get("classId") || "").trim();
@@ -3084,13 +3087,27 @@ function renderEventWorkspace(mode) {
       return;
     }
     setFormError("eventEditError", "");
-    editingEvent.name = cleanedName;
-    editingEvent.date = cleanedDate;
-    editingEvent.classId = cleanedClassId || editingEvent.classId;
+    state.events = state.events.map((item) =>
+      item.id === editingEvent.id
+        ? normalizeEvent({
+            ...item,
+            name: cleanedName,
+            date: cleanedDate,
+            classId: cleanedClassId || item.classId,
+          })
+        : item
+    );
     selectedEventEditId = null;
     saveState();
     renderView();
+  };
+
+  document.getElementById("eventEditForm")?.addEventListener("submit", (event) => {
+    event.preventDefault();
+    commitEventEdit();
   });
+
+  document.getElementById("eventEditSave")?.addEventListener("click", commitEventEdit);
 }
 
 function renderEventManager(eventId) {

src/event_manager_view.js

@@ -26,8 +26,8 @@ export function renderEventManagerMarkup(context) {
     racePresets,
     selectedPreset,
     isEndurancePreset,
-    showBasicQualifyingFields,
-    showBasicFinalFields,
+    showBasicQualifyingFields = true,
+    showBasicFinalFields = true,
     renderRaceFormatContextCardView,
     renderRaceFormatFieldView,
     raceSummaryWarnings,