Clean repository and update .gitignore

- Remove build artifacts from git tracking (build/, dist/, __pycache__/, *.spec)
- Updated .gitignore to properly exclude generated files
- Added old_code/ documentation folder
- Updated sample_data.txt to show new 5-field format
- Exclude user-specific conf/app.conf from tracking

old_code/test_landscape.py

@@ -0,0 +1,38 @@
+"""
+Quick test script for label printing with landscape orientation
+"""
+import os
+from print_label import create_label_pdf, print_to_printer
+
+print("=" * 60)
+print("Label Printer Test - Landscape Orientation")
+print("=" * 60)
+print()
+
+# Test data
+test_data = "TEST-LAND;123456;SN-2026"
+
+print("1. Generating PDF from SVG template...")
+pdf_file = create_label_pdf(test_data)
+print(f"   ✓ PDF created: {pdf_file}")
+print()
+
+# Check file size
+if os.path.exists(pdf_file):
+    size = os.path.getsize(pdf_file)
+    print(f"2. PDF file size: {size} bytes")
+    print()
+    
+print("3. To print:")
+print("   a) Open the PDF and verify it's 35mm x 25mm landscape")
+print("   b) Print using your thermal printer (pre-configured for 35mm x 25mm)")
+print("   c) Or use SumatraPDF command:")
+print()
+print(f'      .\\conf\\SumatraPDF.exe -print-to "YourPrinterName" "{pdf_file}" -print-settings noscale -silent -exit-when-done')
+print()
+print("=" * 60)
+print("For Microsoft Print to PDF:")
+print("  - This printer uses standard page sizes (A4/Letter)")
+print("  - The label will be placed on a larger page")
+print("  - For actual label printing, use a thermal printer")
+print("=" * 60)