Fix Chrome dialog auto-dismiss with Bootstrap modals

- Add modal-alerts.js library with Bootstrap modal replacements
- Replace all 15 confirm() calls with showConfirm/showDeleteConfirm
- Auto-override window.alert() for all alert() calls
- Fixes Chrome 132+ aggressively blocking native dialogs

weed/admin/view/app/service_accounts.templ

@@ -373,7 +373,7 @@ templ ServiceAccounts(data dash.ServiceAccountsData) {
         }
 
         async function deleteSA(id) {
-            if (confirm('Are you sure you want to delete this service account? This action cannot be undone.')) {
+            showDeleteConfirm(id, async function() {
                 try {
                     const response = await fetch(`/api/service-accounts/${id}`, {
                         method: 'DELETE'
@@ -390,7 +390,7 @@ templ ServiceAccounts(data dash.ServiceAccountsData) {
                     console.error('Error deleting service account:', error);
                     showErrorMessage('Failed to delete: ' + error.message);
                 }
-            }
+            }, 'Are you sure you want to delete this service account? This action cannot be undone.');
         }
 
         async function handleCreateServiceAccount() {