- Updated the `from_tuple` method in `Prof` class to specify return type.
- Added type hints for various methods in `LehmannsClient`, `OpenAI`, `WebRequest`, and `ZoteroController` classes to improve code clarity and type safety.
- Modified `pdf_to_csv` function to return a string instead of a DataFrame.
- Enhanced error handling and type hints in `wordparser` and `xmlparser` modules.
- Removed unused UI file `Ui_medianadder.ts`.
- Improved the layout and structure of the `semesterapparat_ui` to enhance user experience.
- Updated file picker to support `.doc` files in addition to `.docx`.
- Added unique item handling in `Ui` class to prevent duplicates in apparat list.
- General code cleanup and consistency improvements across various files.
- Deleted the generated UI file `untitled_ui.py` as it is no longer needed.
- Updated `search_statistic_page.ui` to enhance table properties, including grid style and sort indicators.
- Modified `search_statistic_page_ui.py` to reflect changes in the UI file and improve table header settings.
- Improved cleanup logic in `richtext.py` to ensure files are only deleted if they exist.
- Adjusted spacing in document generation for better formatting.
- Removed obsolete test files: `database_test.py`, `many_webrequest_test.py`, `test_database.py`, and `webrequest_test.py` to clean up the test suite.
