Add template selection and multiple copy printing features

- Implemented template selection: type 0=OK (green), type 1=NOK (red)
- Added multiple copy printing (1-100 copies)
- Extended file format to 5 fields: ARTICLE;NR_ART;SERIAL;TYPE;COUNT
- Created OK/NOK SVG templates with visual distinction
- Fixed PDF landscape orientation issues
- Updated SumatraPDF to use noscale for exact dimensions
- Auto-generate conf folder with default templates on first run
- Made pystray optional for system tray functionality
- Updated build scripts for Python 3.13 compatibility (Kivy 2.3+, PyInstaller 6.18)
- Added comprehensive build documentation
- Improved printer configuration guidance

check_pdf_size.py

@@ -0,0 +1,20 @@
+from reportlab.lib.pagesizes import landscape
+from reportlab.lib.utils import ImageReader
+from reportlab.pdfgen import canvas
+import os
+
+# Check the test PDF file
+if os.path.exists('test_label.pdf'):
+    file_size = os.path.getsize('test_label.pdf')
+    print(f'test_label.pdf exists ({file_size} bytes)')
+    print(f'Expected: 35mm x 25mm landscape (99.2 x 70.9 points)')
+    print(f'')
+    print(f'Open test_label.pdf in a PDF viewer to verify:')
+    print(f'  - Page size should be wider than tall')
+    print(f'  - Content should be correctly oriented')
+    print(f'')
+    print(f'In Adobe Reader: File > Properties > Description')
+    print(f'  Page size should show: 3.5 x 2.5 cm or 1.38 x 0.98 in')
+else:
+    print('test_label.pdf not found')
+