Update v0.1 Linux build with icon support

- Rebuilt Linux executable with updated build system
- Added wordsearch.desktop file for Linux desktop integration
- Desktop file enables icon display in application menus
- Icon will be shown when .desktop file is installed

Users can install desktop file:
  cp wordsearch.desktop ~/.local/share/applications/
  sed -i "s|/path/to/|$(pwd)/|g" ~/.local/share/applications/wordsearch.desktop

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

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

wordsearch.desktop

@@ -0,0 +1,11 @@
+[Desktop Entry]
+Version=1.0
+Type=Application
+Name=Word Search
+Comment=Interactive Word Search Puzzle Generator and Player
+Exec=/path/to/WordSearch
+Icon=/path/to/icon.png
+Terminal=false
+Categories=Game;Education;
+Keywords=puzzle;wordsearch;game;
+StartupNotify=true