Nearly every headless UI test opened with the same four-line prologue
(resolve the shared MainWindow, show it, cast its DataContext, wait for the
assembly list), then repeated the corelib lookup, the EnsureLazyChildren +
Children.OfType<T>().Single() drill, the registry single-by-header lookups,
and the open-an-assembly-and-wait dance. The duplication made the intent of
each test hard to see and every signature tweak a suite-wide edit.
Collapse those into TestHarness (BootAsync, OpenAssemblyAsync, GetCommand,
GetEntry) and TreeNavigation extensions (FindCoreLib, GetChild<T>, Expand<T>),
then apply them across the suite. Net ~865 lines of boilerplate removed with
no change in behaviour; the full headless suite stays green.
Preview tab semantics. ContentTabPage gains IsPreview; the persistent MainTab
starts preview (tree-node clicks replace its Content in place). The user pins
via Window menu, right-click context menu, or inline pin icon — the
just-pinned tab keeps its content/identity and a fresh preview MainTab spawns.
Carve-out tabs (Open in new tab, Options) are born pinned and survive tree
selections.
Assisted-by: Claude:claude-opus-4-7:Claude Code
DecompilerTextView subscribes to SettingsService.DisplaySettings.PropertyChanged
and mirrors the new value into the AvaloniaEdit TextEditor immediately — no
re-decompile, no Apply. Properties wired:
Assisted-by: Claude:claude-opus-4-7:Claude Code
Replaces the WPF modal Options dialog with a Dock document tab — opens via
View → Options at the same MenuOrder=999 mount point, hosts the same three
panels (Decompiler / Display / Misc), and uses the same SettingsSnapshot
commit pattern so closing the tab without Apply discards in-flight edits.
Re-invoking View → Options while one's open just focuses the existing tab.
Assisted-by: Claude:claude-opus-4-7:Claude Code
Siegfried Pammer