Migrate ChapterTool from .NET Framework 4.8 WinForms to .NET 8 Avalonia UI - Complete Implementation with Additional Dialogs#13

Draft

Copilot wants to merge 8 commits intomasterfrom

copilot/modernize-dotnet-framework-app

Commits on Oct 31, 2025

Initial plan
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Initial Avalonia project structure and core library setup

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Fix Core library compilation - all platform-independent code now builds

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Complete initial Avalonia UI migration - builds and runs successfully

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Add comprehensive migration summary and documentation

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Fix DataGrid MethodAccessException by adding Avalonia.Controls.DataGrid package

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Complete UI implementation with file loading, chapter display, and export functionality

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Add log viewer, about dialog, and drag-and-drop file support

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