- Add reloadTree() function to centralize tree updates
- Fix handleSaveEditItem to reload tree after item updates
- Fix handleAddItem to reload tree after adding items
- Fix handleDeleteItem to reload tree after item deletion
- Fix all category functions to reload tree after operations
- Replace broken Bootstrap.Modal.getInstance() with direct DOM manipulation
- Fix JavaScript syntax errors and missing braces
- Ensure tree updates automatically without manual page reload
Resolves issue where tree navigation was not updating after item modifications.
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