Add documentation for tree toolbar actions

Updated .github/copilot-instructions.md and README.md to document the new getTreeToolbarActions() method for adding global toolbar actions above the tree. Includes usage examples and notes version support (3.1.0+).

Author: cklei-carly

.github/copilot-instructions.md

@@ -119,6 +119,21 @@ public function getTreeRecordIcon(?Model $record = null): ?string
 }
 ```
 
+**Toolbar Actions**: Add global actions displayed above the tree:
+
+```php
+protected function getTreeToolbarActions(): array
+{
+    return [
+        CreateAction::make(),
+        ExportAction::make(),
+        ImportAction::make(),
+    ];
+}
+```
+
+> **Note**: Toolbar actions are only supported in version 3.1.0 and later.
+
 ## Key File Locations
 
 - Models: Add `ModelTree` trait to any hierarchical model

README.md

@@ -544,6 +544,32 @@ class ProductCategoryWidget extends BaseWidget
 }
 ```
 
+#### Toolbar Actions
+
+You can add global actions that appear in the toolbar above the tree by implementing the `getTreeToolbarActions()` method. These actions are displayed alongside the default expand/collapse and save buttons:
+
+```php
+protected function getTreeToolbarActions(): array
+{
+    return [
+        \SolutionForest\FilamentTree\Actions\CreateAction::make()
+            ->label('Add Category')
+            ->icon('heroicon-o-plus')
+            ->color('primary'),
+        \Filament\Actions\ExportAction::make()
+            ->label('Export Tree')
+            ->icon('heroicon-o-document-arrow-down'),
+        \Filament\Actions\ImportAction::make()
+            ->label('Import Tree')
+            ->icon('heroicon-o-document-arrow-up'),
+    ];
+}
+```
+
+The toolbar actions are automatically generated by the Artisan command and include a `CreateAction` by default for tree widgets, but return an empty array for tree pages. You can customize this method to add any actions you need.
+
+> **Note**: Toolbar actions are only supported in version 3.1.0 and later.
+
 ### Pages
 
 This plugin enables you to create tree pages in the admin panel. To create a tree page for a model, use the `make:filament-tree-page` command. For example, to create a tree page for the ProductCategory model, you can run: