- Add csv_import_invalid_location to Items.php for CSV import validation
- Add error_deleting_admin and error_updating_admin to Employees.php for admin protection messages
Strings added with empty values so they fallback to English and show as untranslated in Weblate.
* Improve code style and PSR-12 compliance
- refactored code formatting to adhere to PSR-12 guidelines
- standardized coding conventions across the codebase
- added missing framework files and reverted markup changes
- reformatted arrays for enhanced readability
- updated language files for consistent styling and clarity
- minor miscellaneous improvements
