e88f502ffc
- Add imports for GameContextImport and GameContextExport - Add loadGame(importer, input) method to load game from importer - Add exportGame(exporter) method to export current game context - Remove entire loadPgn method (replaced by loadGame) - Remove GameEngineLoadPgnTest (tests old loadPgn API) loadGame supports both move replay and direct position loading: - If no moves, sets position directly via loadPosition - If moves exist, replays through command system for undo/redo support - Notifies PgnLoadedEvent on success Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>