Replace results-phase checkbox with stateful button

wwwroot/js/app-admin-handlers.js

@@ -81,8 +81,9 @@ function setupResultsToggle(runSerializedRefresh) {
     const resultsToggle = $("results-open");
     if (!resultsToggle) return;
 
-    resultsToggle.addEventListener("change", async (e) => {
-        const desired = !!e.target.checked;
+    resultsToggle.addEventListener("click", async () => {
+        const desired = !state.resultsOpen;
+        resultsToggle.disabled = true;
         try {
             const resp = await adminApi.setResultsOpen(desired);
             const wasResultsOpen = state.resultsOpen;
@@ -95,8 +96,9 @@ function setupResultsToggle(runSerializedRefresh) {
             toast(t("admin.resultsUpdated"));
             await runSerializedRefresh();
         } catch (err) {
-            e.target.checked = !desired;
             toast(err.message, true);
+        } finally {
+            resultsToggle.disabled = false;
         }
     });
 }

wwwroot/js/votes-ui.js

@@ -270,6 +270,8 @@ export function updatePhaseNav() {
 
     const adminResultsToggle = $("results-open");
     if (adminResultsToggle) {
-        adminResultsToggle.checked = !!state.resultsOpen;
+        adminResultsToggle.textContent = state.resultsOpen
+            ? t("admin.resultsOpenDisable")
+            : t("admin.resultsOpenEnable");
     }
 }