Notify voters when suggestions change during refresh

wwwroot/js/ui.js

@@ -172,6 +172,7 @@ export function renderAllSuggestions() {
 export function renderVotes() {
     const list = $("vote-list");
     if (!list) return;
+    const prevScroll = list.scrollTop;
     list.innerHTML = "";
     const votesMap = Object.fromEntries(
         state.myVotes.map((v) => [v.suggestionId, v.score]),
@@ -205,6 +206,7 @@ export function renderVotes() {
     });
     updatePhaseNav();
     updateMissingBadgeFromDom();
+    list.scrollTop = prevScroll;
     list.querySelectorAll("input[type=range]").forEach((input) => {
         input.addEventListener("input", (e) => {
             if (state.votesFinal) return;
@@ -734,6 +736,18 @@ export function openResultsRelockModal() {
     });
 }
 
+export function openSuggestionsChangedModal(names) {
+    const uniq = Array.from(new Set(names)).filter(Boolean);
+    if (uniq.length === 0) return;
+    openConfirmModal({
+        title: t("vote.listUpdatedTitle"),
+        body: t("vote.listUpdatedBody", { names: uniq.join(", ") }),
+        confirmLabel: t("vote.listUpdatedConfirm"),
+        cancelLabel: null,
+        onConfirm: (close) => close(),
+    });
+}
+
 export function openConfirmModal({ title, body, confirmLabel, cancelLabel = t("modal.cancel"), onConfirm }) {
     const overlay = document.createElement("div");
     overlay.className = "edit-modal";