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/task_config_templ.templ

@@ -121,9 +121,9 @@ templ TaskConfigTempl(data *TaskConfigTemplData) {
 
         // Reset form function
         function resetForm() {
-            if (confirm('Are you sure you want to reset all changes?')) {
+            showConfirm('Are you sure you want to reset all changes?', function() {
                 location.reload();
-            }
+            });
         }
 
         // Test configuration function