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_schema.templ

@@ -127,7 +127,7 @@ templ TaskConfigSchema(data *maintenance.TaskConfigData, schema *tasks.TaskConfi
 
     <script>
         function resetToDefaults() {
-            if (confirm('Are you sure you want to reset to default configuration? This will overwrite your current settings.')) {
+            showConfirm('Are you sure you want to reset to default configuration? This will overwrite your current settings.', function() {
                 // Reset form fields to their default values
                 const form = document.getElementById('taskConfigForm');
                 const schemaFields = window.taskConfigSchema ? window.taskConfigSchema.fields : {};
@@ -154,7 +154,7 @@ templ TaskConfigSchema(data *maintenance.TaskConfigData, schema *tasks.TaskConfi
                         }
                     }
                 });
-            }
+            });
         }
 
         function convertSecondsToTaskIntervalValueUnit(totalSeconds) {