add shared assets at root for base-apps testing

icons/, scripts/, ui/ folders are needed at root for base-apps
manifest paths like ../../icons/ to resolve correctly during testing

.gitignore

@@ -17,10 +17,8 @@ test_*.log
 *_hierarchy.json
 recorded_actions.json
 
-# Duplicate asset folders (use src/main/assets/ instead)
-/icons/
-/scripts/
-/ui/
+# Note: /icons/, /scripts/, /ui/ at root are needed for base-apps testing
+# They should be copies of src/main/assets/{icons,scripts,ui}
 
 # Sandbox data created during testing
 /src/main/assets/sandbox_data/