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/print_pdf_ghostscript.py

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+"""
+Alternative PDF printing using GhostScript for superior quality.
+GhostScript maintains vector quality better than SumatraPDF.
+"""
+
+import subprocess
+import os
+import sys
+
+def find_ghostscript():
+    """
+    Find GhostScript installation on Windows.
+    
+    Returns:
+        str: Path to gswin64c.exe or gswin32c.exe, or None if not found
+    """
+    possible_paths = [
+        r"C:\Program Files\gs\gs10.04.0\bin\gswin64c.exe",
+        r"C:\Program Files\gs\gs10.03.1\bin\gswin64c.exe",
+        r"C:\Program Files\gs\gs10.03.0\bin\gswin64c.exe",
+        r"C:\Program Files\gs\gs10.02.1\bin\gswin64c.exe",
+        r"C:\Program Files\gs\gs10.02.0\bin\gswin64c.exe",
+        r"C:\Program Files\gs\gs10.01.2\bin\gswin64c.exe",
+        r"C:\Program Files\gs\gs10.01.1\bin\gswin64c.exe",
+        r"C:\Program Files\gs\gs10.01.0\bin\gswin64c.exe",
+        r"C:\Program Files (x86)\gs\gs10.04.0\bin\gswin32c.exe",
+        r"C:\Program Files (x86)\gs\gs10.03.1\bin\gswin32c.exe",
+        r"C:\Program Files (x86)\gs\gs10.03.0\bin\gswin32c.exe",
+    ]
+    
+    # Check standard locations
+    for path in possible_paths:
+        if os.path.exists(path):
+            return path
+    
+    # Search in gs directory
+    for program_files in [r"C:\Program Files", r"C:\Program Files (x86)"]:
+        gs_base = os.path.join(program_files, "gs")
+        if os.path.exists(gs_base):
+            for version_dir in os.listdir(gs_base):
+                for exe_name in ["gswin64c.exe", "gswin32c.exe"]:
+                    gs_path = os.path.join(gs_base, version_dir, "bin", exe_name)
+                    if os.path.exists(gs_path):
+                        return gs_path
+    
+    return None
+
+def print_pdf_with_ghostscript(pdf_path, printer_name):
+    """
+    Print PDF using GhostScript for maximum quality.
+    GhostScript renders PDF at high resolution and maintains vector quality.
+    
+    Args:
+        pdf_path (str): Path to PDF file
+        printer_name (str): Name of the printer
+        
+    Returns:
+        bool: True if successful
+    """
+    gs_path = find_ghostscript()
+    
+    if not gs_path:
+        print("GhostScript not found. Install from: https://ghostscript.com/releases/gsdnld.html")
+        return False
+    
+    try:
+        # GhostScript command for high-quality printing
+        # -dNOPAUSE: Don't pause between pages
+        # -dBATCH: Exit after processing
+        # -sDEVICE=mswinpr2: Windows printer device (high quality)
+        # -dNOSAFER: Allow file operations
+        # -r1200: 1200 DPI resolution
+        # -sOutputFile: Printer name with %printer% syntax
+        
+        cmd = [
+            gs_path,
+            '-dNOPAUSE',
+            '-dBATCH',
+            '-sDEVICE=mswinpr2',  # Windows printer with high quality
+            '-dNOSAFER',
+            '-r1200',  # 1200 DPI - matches our PDF quality
+            '-dTextAlphaBits=4',  # Anti-aliasing for text
+            '-dGraphicsAlphaBits=4',  # Anti-aliasing for graphics
+            f'-sOutputFile=%printer%{printer_name}',
+            pdf_path
+        ]
+        
+        print(f"Printing with GhostScript at 1200 DPI...")
+        result = subprocess.run(
+            cmd,
+            check=True,
+            capture_output=True,
+            text=True,
+            creationflags=subprocess.CREATE_NO_WINDOW if os.name == 'nt' else 0
+        )
+        
+        print(f"✅ Label sent to printer via GhostScript: {printer_name}")
+        return True
+        
+    except subprocess.CalledProcessError as e:
+        print(f"GhostScript print failed: {e}")
+        if e.stderr:
+            print(f"Error details: {e.stderr}")
+        return False
+    except Exception as e:
+        print(f"Error printing with GhostScript: {e}")
+        return False
+
+def check_ghostscript_available():
+    """
+    Check if GhostScript is available.
+    
+    Returns:
+        tuple: (available: bool, path: str or None)
+    """
+    gs_path = find_ghostscript()
+    return (gs_path is not None, gs_path)
+
+if __name__ == "__main__":
+    # Test GhostScript availability
+    available, gs_path = check_ghostscript_available()
+    
+    if available:
+        print(f"✅ GhostScript found at: {gs_path}")
+        print("GhostScript is available for high-quality PDF printing")
+    else:
+        print("❌ GhostScript not found")
+        print("\nTo install GhostScript:")
+        print("1. Download from: https://ghostscript.com/releases/gsdnld.html")
+        print("2. Install the Windows 64-bit version")
+        print("3. Restart your application")
+        print("\nGhostScript provides superior print quality by:")
+        print("  • Maintaining vector graphics quality")
+        print("  • Rendering at full 1200 DPI")
+        print("  • Better text anti-aliasing")