Here are the classes, structs, unions and interfaces with brief descriptions:

[detail level 123456]

▼Pfr
▼Psoftsf
▼Pcanscan
▼Pconstant
CDoubleConstants	Double constants
CFloatConstants	Float constants
CIntConstants	Int constants
CStringConstants	String constants for messages and identifiers
▼Pmodel
CMode	Application operation modes
▼Pservice
CDataBuilderService	Service for generating QR code content and default filenames
CDataBuilderServiceUTest
CGenerateAndSaveService	Service dedicated to QR code generation and saving
CGenerateAndSaveServiceUTest
CValidationFieldHelperUTest
CVersionService	Singleton service for checking application version against GitHub releases
▼Pui
▼Pworker
CAbstractDynamicWorker	Base class managing asynchronous QR code tasks with a unified workflow
CDynamicPreviewWorker	Asynchronously generates and displays a QR code preview in a Swing UI
CDynamicResizeWorker	Asynchronously resizes a generated QR code image for display in a Swing UI
CGenerateAndSaveWorker	SwingWorker that generates and saves QR codes in a background thread
CColorOperation	Utility class for managing QR code colors and color-related UI operations
CEncodedImage	Thread-safe singleton to hold a shared QR code `BufferedImage`
CFlatLafDatePicker	DatePicker component with FlatLaf styling applied and maintained
CFlatLafTimePicker	TimePicker component with FlatLaf styling applied and maintained
CIFlatLafStyledForLGoodDatePicker	Utility interface to apply FlatLaf styling to LGoodDatePicker components
CLabelIconUtil	Utility for releasing memory used by QR code icons
CMyPopup	Utility for displaying standardized dialogs
▼CMyPopupUTest
CShowArgumentErrorDialogTests
CShowDialogTests
CShowYesNoConfirmDialogTests
CSingletonTests
CUiComponentsConfiguration	Creating and configuring UI components
▼Putil
CApplicationMetadata	Application metadata loaded from `version.properties`
CBrowserHelper	Singleton service for browser operations in Swing applications
CChecker	Centralized argument validation utility for detecting and reporting `null` or blank values
CCoordinateHelper	Validating and formatting geographic coordinates
CCoordinateHelperUTest
CDateHelper	Produces iCalendar-compliant UTC timestamps (RFC 5545)
CDateHelperUTest
CFontManager	Singleton responsible for loading and applying custom fonts in the Swing UI
CFontManagerUTest
CFrameHelper	Singleton utility for accessing active application frames
CValidationFieldHelper	Validates and sanitizes user input for QR code parameters
CCanScan	CanScan — Swing QR code generator with MECARD, MEET, and FREE modes
CCanScanUTest
CNativeImageConfigSimulator	Simulates Native Image configuration behavior for UI testing and preview without generating the actual image