- Add build_exe.py script for easy executable generation
- Add PYINSTALLER_GUIDE.md with comprehensive instructions
- Updated label_printer.spec for PyInstaller configuration
- Tested build process - executable builds successfully
- Created dist/LabelPrinter with all dependencies bundled
- File size: ~200MB (includes Python runtime and all libraries)
- No Python installation required to run the exe
- Update GUI title to 'Label Printing' with white text
- Add character limit (25 chars) to all input fields
- Add number-only filter to quantity field
- Fix barcode generation in PDF module
- Create pdf_backup folder for storing generated PDFs
- Add pdf backup logging and confirmation
- Move demo files and tests to documentation folder
- Reorganize project structure for better clarity
