Dialog implementations:
1. CheckingDialog - Animated progress while checking for updates (10s timeout)
2. UpdateAvailableDialog - Shows version, changelog, action buttons
3. DownloadingDialog - Progress bar with size display and cancel option
4. InstallDialog - Confirmation with unsaved changes warning
5. NoUpdateDialog - Clean confirmation when up-to-date
6. ErrorDialog - Error handling with retry and manual download options
Test coverage:
- 29 unit tests for all 6 dialogs
- 100% coverage of update_manager_ui.py
- Signal emission testing for all interactive elements
- Progress bar and file display functionality
- Dialog state and flags validation
- Version parsing and comparison tests
- Cache management with TTL validation
- API fetching with network error handling
- Check for updates (with caching)
- Download update with checksum file handling
- Checksum verification (match/mismatch/missing)
- Platform-aware installer launching (Windows MSI, macOS DMG)
- All 20 tests passing with proper async/await support
- Installed pytest-asyncio for async test support
- Updated copilot instructions to document .venv environment
- Added a professional HTML welcome page displayed when no web application is configured.
- Enhanced `_load_webapp()` method to support improved path resolution for both development and bundled modes.
- Updated error handling to show the welcome page instead of a bare error message when the webapp file is not found.
- Modified unit tests to verify the welcome page is displayed in error scenarios.
build: Complete Windows and macOS build scripts
- Created `build_windows.py` for building Windows executable and optional MSI installer using PyInstaller.
- Developed `build_macos.sh` for creating macOS application bundle and DMG image.
- Added logging and error handling to build scripts for better user feedback.
docs: Add build and icon requirements documentation
- Created `PHASE_3_BUILD_SUMMARY.md` detailing the build process, results, and next steps.
- Added `resources/icons/README.md` outlining icon requirements and creation guidelines.
chore: Sync remotes script for repository maintenance
- Introduced `sync_remotes.ps1` PowerShell script to fetch updates from origin and upstream remotes.
- Achieved 85% overall test coverage with detailed results for individual components.
- Added unit tests for DragInterceptor and MainWindow components.
- Refactored imports and removed unused code in multiple files.
- Updated test configurations and ensured compliance with coverage standards.
- Introduced `allowed_urls` in configuration to specify whitelisted domains/patterns.
- Implemented `RestrictedWebEngineView` to enforce URL restrictions in the web view.
- Updated `MainWindow` to utilize the new restricted web view and added navigation toolbar.
- Enhanced unit tests for configuration and restricted web view to cover new functionality.
- Created architecture documentation outlining high-level design, module organization, data flow, security model, performance considerations, testing strategy, and deployment architecture.
- Added pyproject.toml for project metadata and dependencies management.
- Introduced requirements files for development and production dependencies.
- Set up testing configuration with pytest and tox.
- Established basic directory structure for source code and tests, including __init__.py files.
- Implemented a sample web application (index.html) for drag-and-drop functionality.
- Configured VS Code workspace settings for Python development.
