PlotView now has a parameterless ctor + AttachViewModel(vm) so it can be instantiated by the XAML loader. The context flyout is built lazily in AttachViewModel since it captures live ViewModel state. Class is now public sealed (XAML codegen requirement). MainWindow's BuildPlotPane is gone; the plot pane (toolbar + <controls:PlotView x:Name=PlotControl/>) lives in XAML and the ctor just calls PlotControl.AttachViewModel(ViewModel).
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Move ~460 lines of imperative Canvas plot rendering (draw helpers, value/time axes, zoom state, context flyout, wheel handler, color theming, and the PlotBounds/PlotAxisLayout/PlotSeriesSample records) out of MainWindow into a new Controls/PlotView : Grid that owns its own Canvas. PlotWindow now hosts a PlotView instead of a raw Canvas; the shared rendering path collapses to PlotView.Redraw().
MainWindow shrinks from 2014 to 1445 lines; the inline plot pane and the windowed plot now share a single code path. Public API on PlotView: Redraw(), Clear(), ResetZoom(), ApplyTheme(AppThemeMode).
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
JMR-devandCopilot