Declare File/View/Options/Help menus and their toggle items in XAML with x:Bind (TwoWay) to ViewModel properties. Radio/indexed submenus (Temperature Unit, Plot Location, Theme, Stroke Thickness, File Rotation, Update Interval, Logging Interval, Sensor Values Time Window) are declared as named empty MenuFlyoutSubItems and populated by PopulateRadioSubMenu in code-behind so dynamic check-state and Tag-based selection are preserved.
Click handlers for non-toggle items (save report, reset, expand/collapse, web server dialogs, about, exit) live on the code-behind. Delete BuildMenuBar, CreateToggleItem, CreateToggleSettingItem, BuildRadioSubMenu, BuildIndexedSubMenu. CreateMenuItem is retained for the still-imperative sensor row context menu.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Express the status TextBlock and full loading overlay (ProgressRing + label) declaratively with x:Bind to ViewModel.StatusText and ViewModel.HardwareLoadingVisibility. Delete the imperative StatusHost population and BuildLoadingOverlay helper.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Make MainWindow partial and add a XAML skeleton with named hosts (MenuHost, ContentGrid, StatusHost, OverlayHost). Replace BuildRoot/AssignContent/ResolveControls with InitializeComponent plus imperative population of the named hosts; existing menu/sensor/plot/overlay builders are unchanged so later sub-steps can replace each region declaratively.
Bind OverlayHost.Visibility to HardwareLoadingVisibility so the empty host does not intercept hit-testing once loading completes. Builders that previously assigned via the brittle Children[] casting now use out params.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
JMR-devandCopilot