refactored confirmation dialogs to use a unified confirmAction modal

website/js/pages/assignments.js

@@ -1,5 +1,6 @@
 import { apiGet, apiPost } from '../api.js';
 import { pageHeaderHTML, showToast } from '../app.js';
+import { confirmAction } from '../confirm-modal.js';
 
 const CLIENT_PAGE_SIZE = 50;
 
@@ -421,7 +422,11 @@ async function doAssign() {
     if (!coachID) { showToast('Select a target counselor', 'error'); return; }
 
     const coachName = coaches.find(c => c.coachID === coachID)?.username || coachID;
-    if (!confirm(`Assign ${selected.length} client(s) to ${coachName}?`)) return;
+    if (!(await confirmAction({
+        title: 'Assign clients',
+        message: `Assign ${selected.length} client(s) to ${coachName}?`,
+        confirmLabel: 'Assign',
+    }))) return;
 
     const btn = document.getElementById('assignBtn');
     btn.disabled = true;