Fix build failures for Windows and macOS

Windows fix:
- Add UTF-8 console encoding configuration
- Use ASCII fallbacks for Unicode symbols (✓, ✗, ⚠)
- Fixes UnicodeEncodeError on Windows cp1252 console

macOS fix:
- Make icon files optional in hexglitcher.spec
- Check if icon.ico and icon.icns exist before using
- Fixes FileNotFoundError when icons are missing

Both platforms can now build without icon files present.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: willbearfruits

build.py

@@ -11,6 +11,16 @@
 import platform
 from pathlib import Path
 
+# Fix Windows console encoding for Unicode characters
+if sys.platform == 'win32':
+    try:
+        # Try to set UTF-8 encoding for Windows console
+        sys.stdout.reconfigure(encoding='utf-8')
+    except AttributeError:
+        # Python < 3.7 fallback
+        import codecs
+        sys.stdout = codecs.getwriter('utf-8')(sys.stdout.buffer, 'strict')
+
 # Colors for terminal output
 class Colors:
     HEADER = '\033[95m'
@@ -28,15 +38,21 @@ def print_step(message):
 
 def print_success(message):
     """Print a success message."""
-    print(f"{Colors.OKGREEN}✓ {message}{Colors.ENDC}")
+    # Use ASCII checkmark on Windows if Unicode fails
+    checkmark = "√" if sys.platform != 'win32' else "[OK]"
+    print(f"{Colors.OKGREEN}{checkmark} {message}{Colors.ENDC}")
 
 def print_error(message):
     """Print an error message."""
-    print(f"{Colors.FAIL}✗ {message}{Colors.ENDC}")
+    # Use ASCII X on Windows if Unicode fails
+    xmark = "✗" if sys.platform != 'win32' else "[ERROR]"
+    print(f"{Colors.FAIL}{xmark} {message}{Colors.ENDC}")
 
 def print_warning(message):
     """Print a warning message."""
-    print(f"{Colors.WARNING}⚠ {message}{Colors.ENDC}")
+    # Use ASCII warning on Windows if Unicode fails
+    warning = "⚠" if sys.platform != 'win32' else "[WARN]"
+    print(f"{Colors.WARNING}{warning} {message}{Colors.ENDC}")
 
 def check_dependencies():
     """Check if required build dependencies are installed."""

hexglitcher.spec

@@ -6,13 +6,18 @@ Builds standalone executable for Windows, Linux, and macOS
 """
 
 import sys
+import os
 from PyInstaller.utils.hooks import collect_data_files
 
 block_cipher = None
 
 # Collect data files for PIL/Pillow
 datas = collect_data_files('PIL')
 
+# Check if icon files exist
+icon_ico = 'icon.ico' if os.path.exists('icon.ico') else None
+icon_icns = 'icon.icns' if os.path.exists('icon.icns') else None
+
 a = Analysis(
     ['main.py'],
     pathex=[],
@@ -55,15 +60,15 @@ exe = EXE(
     target_arch=None,
     codesign_identity=None,
     entitlements_file=None,
-    icon='icon.ico' if sys.platform == 'win32' else None,
+    icon=icon_ico if sys.platform == 'win32' else None,
 )
 
 # On macOS, create an app bundle
 if sys.platform == 'darwin':
     app = BUNDLE(
         exe,
         name='HexGlitcher.app',
-        icon='icon.icns',
+        icon=icon_icns,
         bundle_identifier='com.glitches.hexglitcher',
         info_plist={
             'NSPrincipalClass': 'NSApplication',