cd21e54abf
- Add MaterialsToBeDeletedDAO for managing material deletion records by MaterialCode - Add MaterialValidationResult dataclass for enhanced validation results - Add CheckboxTreeview component with selectable checkbox functionality - Refactor material validation UI with new columns: select, material name, code, spec, model, manager - Add double-click to edit manager name functionality - Add select all/deselect all buttons - Add confirm deletion button to write selected records to database - Prioritize MaterialsToBeDeleted.ManagerName over type-based matching when displaying - Export results to Excel with selection state Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>