feat: add bulk move recipes endpoint

Add new move_recipes_bulk endpoint to handle moving multiple recipes simultaneously. This improves efficiency when reorganizing recipe collections by allowing batch operations instead of individual moves.

- Add move_recipes_bulk handler method with proper error handling
- Register new POST /api/lm/recipes/move-bulk route
- Implement bulk move logic in persistence service
- Validate required parameters (recipe_ids and target_path)
- Handle common error cases including validation, not found, and server errors

static/js/core.js

@@ -60,14 +60,12 @@ export class AppCore {
         initTheme();
         initBackToTop();
         
-        // Initialize the bulk manager and context menu only if not on recipes page
-        if (state.currentPageType !== 'recipes') {
-            bulkManager.initialize();
+        // Initialize the bulk manager and context menu
+        bulkManager.initialize();
 
-            // Initialize bulk context menu
-            const bulkContextMenu = new BulkContextMenu();
-            bulkManager.setBulkContextMenu(bulkContextMenu);
-        }
+        // Initialize bulk context menu
+        const bulkContextMenu = new BulkContextMenu();
+        bulkManager.setBulkContextMenu(bulkContextMenu);
         
         // Initialize the example images manager
         exampleImagesManager.initialize();
@@ -121,4 +119,4 @@ export class AppCore {
 }
 
 // Create and export a singleton instance
-export const appCore = new AppCore();
+export const appCore = new AppCore();