Every click in the launcher exited the process. MainWindow ctor called
AvaloniaXamlLoader.Load(this), which loads the XAML tree but never assigns
the generated x:Name backing fields, so ProfilesTree, ServerNameTextBox,
AccountNameTextBox, CharacterNameTextBox, EditorSubmitButton,
FirstRunDatDirectoryTextBox and UpdateCloseButton were all null. Opening or
closing any modal calls Focus() on one of them via
OnViewModelPropertyChanged, so the NullReferenceException escaped the
dispatcher and Program's top-level guard exited 74. A fresh isolated-root
start auto-opens the first-run wizard and hit the same line with no click
at all.
App.axaml.cs keeps AvaloniaXamlLoader.Load - that is the correct idiom for
Application.Initialize(), which has no named controls.
Verified live: the isolated-root launch that died instantly now stays up
with the first-run wizard open and the window responding.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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