- Allow users to select a transparent color for logo images (watermarks) via UI (checkbox, color picker, preview).
- Apply color-key transparency in both System.Drawing and ImageSharp backends: specified color in logo is made fully transparent.
- Persist transparency settings in PicSettings and SettingsDto; bind to DataModel and UI controls.
- Update logo preview to reflect transparency in real time.
- Add option to select image processing library (System.Drawing or ImageSharp) in UI and settings.
- Fix bug in SettingsService parameter loading for int/double/DateTime.
- Fully integrate color-key transparency into image processing and settings serialization.
Introduce UI option to choose between System.Graphics and ImageSharp for image processing. Update DataModel and MainForm for robust binding and synchronization. Rewrite ImageCreatorAlternate to use ImageSharp for core operations and GDI+ for overlays. Remove test buttons, add radio group for library selection. Update project dependencies to support new features and modernize image handling.
Introduce IImageCreator interface for image creation, and update ImageCreatorSharp to implement it. Add ImageCreatorAlternate (adapter) and ImageCreatorMapper (runtime selector) classes. Extend PicSettings with ImageCreatorProvider to control backend selection. Update DI registrations and refactor ImageCreationStuff to depend on IImageCreator, enabling backend switching via configuration.
