Changelog

• Fixed .NET Framework 4.8 Compilation: Resolved MaterialDesign package reference errors by migrating from PackageReference to traditional packages.config format for full .NET Framework compatibility.
• Removed Nullable Reference Types: Updated all C# code to remove nullable operators and references that are not supported in .NET Framework 4.8, ensuring clean compilation.
• Updated Language Version: Set C# language version to 7.3 for optimal compatibility with .NET Framework 4.8 while maintaining modern syntax features.
• Fixed Package Dependencies: Corrected MaterialDesignThemes.Wpf, MaterialDesignColors, and Microsoft.Xaml.Behaviors package references with proper version targeting.
• Implemented Single Executable Packaging: Added Costura.Fody integration to embed all dependencies into a single portable .exe file, eliminating the need for separate DLL files.
• Enhanced Build Configuration: Updated project file with proper MSBuild targets, import statements, and NuGet package restoration for reliable builds.
• Improved Code Compatibility: Refactored async/await patterns, event handlers, and disposal patterns to work correctly with .NET Framework 4.8 constraints.
• Eliminated Runtime Dependencies: Ensured the final executable runs without requiring additional DLL files or complex deployment procedures.