- Add saveAsToFile() method to Document class for "Save As" functionality
- Add actionSaveAs menu item and onAction_saveAs() handler in MainWindow
- Add isValidItem() method to GraphicsBaseItem to filter helper elements
- Add using declarations to expose AbstractShapeType members in GraphicsBaseItem
- Fix document serialization to properly handle GraphicsItemGroup pen/brush
- HandleType enum starts from 50 to avoid conflicts with future handle types
- Improve deserialization to properly restore item properties
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
- Add Document class (include/document.h, source/document.cpp)
- JSON serialization/deserialization of DesignerScene
- State management: filename, modified flag, timestamps, metadata
- File operations: New, Open, Save with .bay extension
- Integrate Document into CMainWindow
- initializeDocument() to create and associate with DesignerScene
- File menu actions connected to Document methods
- Window title updates on modified/filename changes
- Close event checks for unsaved changes
- Update CLAUDE.md with Document architecture documentation
Jesse Qu