test(aot): selftest runner crash/hang harness for NativeAOT baseline

Adds infrastructure to run the selftest fixture suite under NativeAOT
without a single crashing fixture killing the entire run, capturing a
shippable AOT baseline (573/735 fixtures run cleanly).

Runner (`SelfTestRunner.cs`):
- 15s per-fixture managed-hang watchdog (`Task.WhenAny` against
  `Task.Delay`), reports TIMEOUT and continues with next fixture
- `DefaultAotSkipPatterns` baked into the runner — fixtures known to
  silently terminate the process under AOT with
  `STATUS_FATAL_USER_CALLBACK_EXCEPTION` (0xC000027B). The watchdog
  cannot catch these because the process dies in native code before
  any managed continuation runs.
- `REACTOR_AOT_SKIP` env var appends to the default skip list, with
  exact-match or `Prefix*` wildcard patterns — lets you iterate on new
  skips without rebuilding the native binary
- Skip path emits a TAP `# SKIP` directive and yields at
  `DispatcherQueuePriority.Low` between each iteration so WinUI's
  render pass actually runs; without this, a run of consecutive skips
  drains the dispatcher queue faster than rendering catches up and the
  title bar appears frozen at the prior fixture's index
- Pre-fixture low-priority yield so the title bar repaints *before*
  the next fixture executes — otherwise a fixture that crashes the
  process leaves the title showing the previous fixture's name and
  the failure looks attributed to the wrong fixture
- AOT detection via `RuntimeFeature.IsDynamicCodeSupported`; skip list
  is a no-op under the JIT

Harness (`Harness.cs`):
- New `MarkFixtureSkipped(int)` paints the segment-bar cell amber so
  skips are visually distinguishable from green (pass) and red (fail)

Host csproj:
- `PublishAotInternal=true` opt-in property gates the `PublishAot`
  property to just this host project — `PublishAot=true` at the
  command line would otherwise propagate to the analyzer/generator
  projects which target `netstandard2.0` and fail restore

AOT baseline (this commit's run):
- 735 total fixtures; 573 ran; 162 skipped; 87 failed checks across
  27 fixtures; clean exit 1 (no native crash)
- Failures cluster as: Loc_* (22, satellite/MessageFormat reflection),
  PropertyGrid family (~28, reflection-based property discovery
  losing members under trim — same shape as the DataGrid<T> fix),
  Devtools_* (8), NavUpdate_* (3), misc (6)
- JIT reference: 735 ran, 2614 ok, 0 failures — confirms the
  underlying code is healthy and every regression is AOT-specific

This is a baseline harness, not the AOT fixes themselves. Subsequent
work can narrow wildcard skips (`EchoSuppress_*`, `Commanding_*`,
`SelectionEvt_*`, etc. were skipped speculatively as cluster
mitigation; many likely pass individually) and tackle the failing
fixtures + native crash root causes.

Also includes a benign alphabetization of `skills/reactor.api.txt`
and its plugins/ mirror, left in the working tree from prior work
on this branch.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: codemonkeychris

plugins/reactor/skills/reactor-dsl/references/reactor.api.txt

@@ -79,11 +79,11 @@ Heading(string content) → TextBlockElement
 Hyperlink(string text, Uri navigateUri) → RichTextHyperlink
 HyperlinkButton(Command command) → HyperlinkButtonElement
 HyperlinkButton(string content, Uri navigateUri = null, Action onClick = null) → HyperlinkButtonElement
-If(bool condition, Func<Element> then, Func<Element> otherwise = null) → Element
-Image(string source) → ImageElement
 Icon(IconData data) → IconElement
 Icon(Symbol symbol) → IconElement
 Icon(string symbol) → IconElement
+If(bool condition, Func<Element> then, Func<Element> otherwise = null) → Element
+Image(string source) → ImageElement
 ImageIcon(Uri source) → ImageIconData
 InfoBadge() → InfoBadgeElement
 InfoBadge(int value) → InfoBadgeElement
@@ -249,8 +249,8 @@ ColorPickerElement.ValueRange(int minValue, int maxValue) → ColorPickerElement
 ComboBoxElement.Description(string description) → ComboBoxElement
 ComboBoxElement.DropDownClosed(Action handler) → ComboBoxElement
 ComboBoxElement.DropDownOpened(Action handler) → ComboBoxElement
-ComboBoxElement.IsEditable(bool editable = true) → ComboBoxElement
 ComboBoxElement.Header(string header) → ComboBoxElement
+ComboBoxElement.IsEditable(bool editable = true) → ComboBoxElement
 ComboBoxElement.MaxDropDownHeight(double height) → ComboBoxElement
 ComboBoxElement.Placeholder(string text) → ComboBoxElement
 ComboBoxElement.SelectedIndexChanged(Action<int> handler) → ComboBoxElement
@@ -308,19 +308,19 @@ HyperlinkButtonElement.Click(Action handler) → HyperlinkButtonElement
 HyperlinkButtonElement.NavigateUri(Uri uri) → HyperlinkButtonElement
 HyperlinkButtonElement.Set(Action<HyperlinkButton> configure) → HyperlinkButtonElement
 HyperlinkButtonElement.TextLink() → HyperlinkButtonElement
+IconElement.Set(Action<IconElement> configure) → IconElement
 ImageElement.ImageFailed(Action<string> handler) → ImageElement
 ImageElement.ImageOpened(Action handler) → ImageElement
 ImageElement.NineGrid(Thickness nineGrid) → ImageElement
-IconElement.Set(Action<IconElement> configure) → IconElement
 ImageElement.Set(Action<Image> configure) → ImageElement
 InfoBadgeElement.Set(Action<InfoBadge> configure) → InfoBadgeElement
 InfoBarElement.ActionButtonClick(Action handler) → InfoBarElement
-InfoBarElement.IsClosable(bool closable = true) → InfoBarElement
 InfoBarElement.Closed(Action handler) → InfoBarElement
 InfoBarElement.Content(Element content) → InfoBarElement
 InfoBarElement.Error() → InfoBarElement
 InfoBarElement.IconSource(IconData icon) → InfoBarElement
 InfoBarElement.Informational() → InfoBarElement
+InfoBarElement.IsClosable(bool closable = true) → InfoBarElement
 InfoBarElement.Set(Action<InfoBar> configure) → InfoBarElement
 InfoBarElement.Severity(InfoBarSeverity severity) → InfoBarElement
 InfoBarElement.Success() → InfoBarElement
@@ -422,9 +422,9 @@ RadioButtonsElement.SelectedIndexChanged(Action<int> handler) → RadioButtonsEl
 RadioButtonsElement.Set(Action<RadioButtons> configure) → RadioButtonsElement
 RatingControlElement.Caption(string caption) → RatingControlElement
 RatingControlElement.InitialSetValue(int value) → RatingControlElement
+RatingControlElement.IsReadOnly(bool readOnly = true) → RatingControlElement
 RatingControlElement.MaxRating(int max) → RatingControlElement
 RatingControlElement.PlaceholderValue(double value) → RatingControlElement
-RatingControlElement.IsReadOnly(bool readOnly = true) → RatingControlElement
 RatingControlElement.Set(Action<RatingControl> configure) → RatingControlElement
 RatingControlElement.ValueChanged(Action<double> handler) → RatingControlElement
 RectangleElement.Fill(Brush brush) → RectangleElement
@@ -501,7 +501,6 @@ T.CenterPoint<T>(Vector3 center) → T
 T.ConnectedAnimation<T>(string key) → T
 T.CornerRadius<T>(double radius) → T
 T.CornerRadius<T>(double topLeft, double topRight, double bottomRight, double bottomLeft) → T
-T.IsEnabled<T>(bool enabled = true) → T
 T.DraggableWhen<T>(Func<bool> canDrag) → T
 T.Flex<T>(double grow = 0, double shrink = 1, double? basis = null, FlexAlign? alignSelf = null, FlexPositionType position = FlexPositionType.Relative, double? left = null, double? top = null, double? right = null, double? bottom = null) → T
 T.FocusMeta<T>(FocusManager fm, string fieldName, bool autoFocus = false) → T
@@ -525,7 +524,9 @@ T.HierarchyLevel<T>(int level) → T
 T.HorizontalAlignment<T>(HorizontalAlignment alignment) → T
 T.Immediate<T>() → T
 T.InteractionStates<T>(Func<InteractionStatesBuilder, InteractionStatesBuilder> configure, Curve curve = null) → T
+T.IsEnabled<T>(bool enabled = true) → T
 T.IsTabStop<T>(bool isTabStop = true) → T
+T.IsVisible<T>(bool isVisible) → T
 T.ItemContainerTransitions<T>(Transition[] transitions) → T
 T.ItemStatus<T>(string status) → T
 T.Keyframes<T>(string name, object trigger, Func<KeyframeBuilder, KeyframeBuilder> configure) → T
@@ -623,7 +624,6 @@ T.Validate<T>(string fieldName, object value, IValidator[] validators) → T
 T.ValidateAsync<T>(string fieldName, IAsyncValidator[] asyncValidators) → T
 T.ValidateAsync<T>(string fieldName, object value, IAsyncValidator[] asyncValidators) → T
 T.VerticalAlignment<T>(VerticalAlignment alignment) → T
-T.IsVisible<T>(bool isVisible) → T
 T.Width<T>(double width) → T
 T.WithBorder<T>(Brush brush, double thickness = 1) → T
 T.WithBorder<T>(ThemeRef theme, double thickness = 1) → T
@@ -643,9 +643,9 @@ TabViewElement.AllowDropTabs(bool allow = true) → TabViewElement
 TabViewElement.CanDragTabs(bool canDrag = true) → TabViewElement
 TabViewElement.CanReorderTabs(bool canReorder = true) → TabViewElement
 TabViewElement.CloseButtonOverlayMode(TabViewCloseButtonOverlayMode mode) → TabViewElement
+TabViewElement.IsAddTabButtonVisible(bool visible = true) → TabViewElement
 TabViewElement.SelectedIndexChanged(Action<int> handler) → TabViewElement
 TabViewElement.Set(Action<TabView> configure) → TabViewElement
-TabViewElement.IsAddTabButtonVisible(bool visible = true) → TabViewElement
 TabViewElement.TabCloseRequested(Action<int> handler) → TabViewElement
 TabViewElement.TabStripFooter(Element footer) → TabViewElement
 TabViewElement.TabStripHeader(Element header) → TabViewElement
@@ -673,9 +673,9 @@ TextBlockElement.FontFamily(FontFamily family) → TextBlockElement
 TextBlockElement.FontFamily(string family) → TextBlockElement
 TextBlockElement.FontSize(double size) → TextBlockElement
 TextBlockElement.FontStyle(FontStyle style) → TextBlockElement
+TextBlockElement.IsTextSelectionEnabled(bool enabled = true) → TextBlockElement
 TextBlockElement.LineHeight(double height) → TextBlockElement
 TextBlockElement.MaxLines(int maxLines) → TextBlockElement
-TextBlockElement.IsTextSelectionEnabled(bool enabled = true) → TextBlockElement
 TextBlockElement.SemiBold() → TextBlockElement
 TextBlockElement.Set(Action<TextBlock> configure) → TextBlockElement
 TextBlockElement.TextAlignment(TextAlignment alignment) → TextBlockElement
@@ -690,11 +690,11 @@ TextFieldElement.EmailInput() → TextFieldElement
 TextFieldElement.Focus(FocusManager fm, string fieldName, bool autoFocus = false) → TextFieldElement
 TextFieldElement.Header(string header) → TextFieldElement
 TextFieldElement.InputScope(InputScopeNameValue scope) → TextFieldElement
+TextFieldElement.IsReadOnly(bool readOnly = true) → TextFieldElement
 TextFieldElement.IsSpellCheckEnabled(bool enabled = true) → TextFieldElement
 TextFieldElement.MaxLength(int maxLength) → TextFieldElement
 TextFieldElement.NumericInput() → TextFieldElement
 TextFieldElement.PhoneInput() → TextFieldElement
-TextFieldElement.IsReadOnly(bool readOnly = true) → TextFieldElement
 TextFieldElement.SearchInput() → TextFieldElement
 TextFieldElement.SelectionChanged(Action<string, int, int> handler) → TextFieldElement
 TextFieldElement.Set(Action<TextBox> configure) → TextFieldElement

skills/reactor.api.txt

@@ -79,11 +79,11 @@ Heading(string content) → TextBlockElement
 Hyperlink(string text, Uri navigateUri) → RichTextHyperlink
 HyperlinkButton(Command command) → HyperlinkButtonElement
 HyperlinkButton(string content, Uri navigateUri = null, Action onClick = null) → HyperlinkButtonElement
-If(bool condition, Func<Element> then, Func<Element> otherwise = null) → Element
-Image(string source) → ImageElement
 Icon(IconData data) → IconElement
 Icon(Symbol symbol) → IconElement
 Icon(string symbol) → IconElement
+If(bool condition, Func<Element> then, Func<Element> otherwise = null) → Element
+Image(string source) → ImageElement
 ImageIcon(Uri source) → ImageIconData
 InfoBadge() → InfoBadgeElement
 InfoBadge(int value) → InfoBadgeElement
@@ -249,8 +249,8 @@ ColorPickerElement.ValueRange(int minValue, int maxValue) → ColorPickerElement
 ComboBoxElement.Description(string description) → ComboBoxElement
 ComboBoxElement.DropDownClosed(Action handler) → ComboBoxElement
 ComboBoxElement.DropDownOpened(Action handler) → ComboBoxElement
-ComboBoxElement.IsEditable(bool editable = true) → ComboBoxElement
 ComboBoxElement.Header(string header) → ComboBoxElement
+ComboBoxElement.IsEditable(bool editable = true) → ComboBoxElement
 ComboBoxElement.MaxDropDownHeight(double height) → ComboBoxElement
 ComboBoxElement.Placeholder(string text) → ComboBoxElement
 ComboBoxElement.SelectedIndexChanged(Action<int> handler) → ComboBoxElement
@@ -308,19 +308,19 @@ HyperlinkButtonElement.Click(Action handler) → HyperlinkButtonElement
 HyperlinkButtonElement.NavigateUri(Uri uri) → HyperlinkButtonElement
 HyperlinkButtonElement.Set(Action<HyperlinkButton> configure) → HyperlinkButtonElement
 HyperlinkButtonElement.TextLink() → HyperlinkButtonElement
+IconElement.Set(Action<IconElement> configure) → IconElement
 ImageElement.ImageFailed(Action<string> handler) → ImageElement
 ImageElement.ImageOpened(Action handler) → ImageElement
 ImageElement.NineGrid(Thickness nineGrid) → ImageElement
-IconElement.Set(Action<IconElement> configure) → IconElement
 ImageElement.Set(Action<Image> configure) → ImageElement
 InfoBadgeElement.Set(Action<InfoBadge> configure) → InfoBadgeElement
 InfoBarElement.ActionButtonClick(Action handler) → InfoBarElement
-InfoBarElement.IsClosable(bool closable = true) → InfoBarElement
 InfoBarElement.Closed(Action handler) → InfoBarElement
 InfoBarElement.Content(Element content) → InfoBarElement
 InfoBarElement.Error() → InfoBarElement
 InfoBarElement.IconSource(IconData icon) → InfoBarElement
 InfoBarElement.Informational() → InfoBarElement
+InfoBarElement.IsClosable(bool closable = true) → InfoBarElement
 InfoBarElement.Set(Action<InfoBar> configure) → InfoBarElement
 InfoBarElement.Severity(InfoBarSeverity severity) → InfoBarElement
 InfoBarElement.Success() → InfoBarElement
@@ -422,9 +422,9 @@ RadioButtonsElement.SelectedIndexChanged(Action<int> handler) → RadioButtonsEl
 RadioButtonsElement.Set(Action<RadioButtons> configure) → RadioButtonsElement
 RatingControlElement.Caption(string caption) → RatingControlElement
 RatingControlElement.InitialSetValue(int value) → RatingControlElement
+RatingControlElement.IsReadOnly(bool readOnly = true) → RatingControlElement
 RatingControlElement.MaxRating(int max) → RatingControlElement
 RatingControlElement.PlaceholderValue(double value) → RatingControlElement
-RatingControlElement.IsReadOnly(bool readOnly = true) → RatingControlElement
 RatingControlElement.Set(Action<RatingControl> configure) → RatingControlElement
 RatingControlElement.ValueChanged(Action<double> handler) → RatingControlElement
 RectangleElement.Fill(Brush brush) → RectangleElement
@@ -501,7 +501,6 @@ T.CenterPoint<T>(Vector3 center) → T
 T.ConnectedAnimation<T>(string key) → T
 T.CornerRadius<T>(double radius) → T
 T.CornerRadius<T>(double topLeft, double topRight, double bottomRight, double bottomLeft) → T
-T.IsEnabled<T>(bool enabled = true) → T
 T.DraggableWhen<T>(Func<bool> canDrag) → T
 T.Flex<T>(double grow = 0, double shrink = 1, double? basis = null, FlexAlign? alignSelf = null, FlexPositionType position = FlexPositionType.Relative, double? left = null, double? top = null, double? right = null, double? bottom = null) → T
 T.FocusMeta<T>(FocusManager fm, string fieldName, bool autoFocus = false) → T
@@ -525,7 +524,9 @@ T.HierarchyLevel<T>(int level) → T
 T.HorizontalAlignment<T>(HorizontalAlignment alignment) → T
 T.Immediate<T>() → T
 T.InteractionStates<T>(Func<InteractionStatesBuilder, InteractionStatesBuilder> configure, Curve curve = null) → T
+T.IsEnabled<T>(bool enabled = true) → T
 T.IsTabStop<T>(bool isTabStop = true) → T
+T.IsVisible<T>(bool isVisible) → T
 T.ItemContainerTransitions<T>(Transition[] transitions) → T
 T.ItemStatus<T>(string status) → T
 T.Keyframes<T>(string name, object trigger, Func<KeyframeBuilder, KeyframeBuilder> configure) → T
@@ -623,7 +624,6 @@ T.Validate<T>(string fieldName, object value, IValidator[] validators) → T
 T.ValidateAsync<T>(string fieldName, IAsyncValidator[] asyncValidators) → T
 T.ValidateAsync<T>(string fieldName, object value, IAsyncValidator[] asyncValidators) → T
 T.VerticalAlignment<T>(VerticalAlignment alignment) → T
-T.IsVisible<T>(bool isVisible) → T
 T.Width<T>(double width) → T
 T.WithBorder<T>(Brush brush, double thickness = 1) → T
 T.WithBorder<T>(ThemeRef theme, double thickness = 1) → T
@@ -643,9 +643,9 @@ TabViewElement.AllowDropTabs(bool allow = true) → TabViewElement
 TabViewElement.CanDragTabs(bool canDrag = true) → TabViewElement
 TabViewElement.CanReorderTabs(bool canReorder = true) → TabViewElement
 TabViewElement.CloseButtonOverlayMode(TabViewCloseButtonOverlayMode mode) → TabViewElement
+TabViewElement.IsAddTabButtonVisible(bool visible = true) → TabViewElement
 TabViewElement.SelectedIndexChanged(Action<int> handler) → TabViewElement
 TabViewElement.Set(Action<TabView> configure) → TabViewElement
-TabViewElement.IsAddTabButtonVisible(bool visible = true) → TabViewElement
 TabViewElement.TabCloseRequested(Action<int> handler) → TabViewElement
 TabViewElement.TabStripFooter(Element footer) → TabViewElement
 TabViewElement.TabStripHeader(Element header) → TabViewElement
@@ -673,9 +673,9 @@ TextBlockElement.FontFamily(FontFamily family) → TextBlockElement
 TextBlockElement.FontFamily(string family) → TextBlockElement
 TextBlockElement.FontSize(double size) → TextBlockElement
 TextBlockElement.FontStyle(FontStyle style) → TextBlockElement
+TextBlockElement.IsTextSelectionEnabled(bool enabled = true) → TextBlockElement
 TextBlockElement.LineHeight(double height) → TextBlockElement
 TextBlockElement.MaxLines(int maxLines) → TextBlockElement
-TextBlockElement.IsTextSelectionEnabled(bool enabled = true) → TextBlockElement
 TextBlockElement.SemiBold() → TextBlockElement
 TextBlockElement.Set(Action<TextBlock> configure) → TextBlockElement
 TextBlockElement.TextAlignment(TextAlignment alignment) → TextBlockElement
@@ -690,11 +690,11 @@ TextFieldElement.EmailInput() → TextFieldElement
 TextFieldElement.Focus(FocusManager fm, string fieldName, bool autoFocus = false) → TextFieldElement
 TextFieldElement.Header(string header) → TextFieldElement
 TextFieldElement.InputScope(InputScopeNameValue scope) → TextFieldElement
+TextFieldElement.IsReadOnly(bool readOnly = true) → TextFieldElement
 TextFieldElement.IsSpellCheckEnabled(bool enabled = true) → TextFieldElement
 TextFieldElement.MaxLength(int maxLength) → TextFieldElement
 TextFieldElement.NumericInput() → TextFieldElement
 TextFieldElement.PhoneInput() → TextFieldElement
-TextFieldElement.IsReadOnly(bool readOnly = true) → TextFieldElement
 TextFieldElement.SearchInput() → TextFieldElement
 TextFieldElement.SelectionChanged(Action<string, int, int> handler) → TextFieldElement
 TextFieldElement.Set(Action<TextBox> configure) → TextFieldElement

tests/Reactor.AppTests.Host/Reactor.AppTests.Host.csproj

@@ -12,6 +12,10 @@
     <WindowsPackageType>None</WindowsPackageType>
   </PropertyGroup>
 
+  <PropertyGroup Condition="'$(PublishAotInternal)' == 'true'">
+    <PublishAot>true</PublishAot>
+  </PropertyGroup>
+
   <ItemGroup>
     <PackageReference Include="Microsoft.WindowsAppSDK" Version="$(WindowsAppSDKVersion)" />
     <PackageReference Include="MessageFormat" Version="8.0.0" />

tests/Reactor.AppTests.Host/SelfTest/Harness.cs

@@ -139,6 +139,16 @@ public void MarkFixtureResult(int index, bool passed)
                 : global::Windows.UI.Color.FromArgb(255, 244, 67, 54)); // red
     }
 
+    /// <summary>
+    /// Colors the segment at <paramref name="index"/> yellow to indicate a skipped fixture.
+    /// </summary>
+    public void MarkFixtureSkipped(int index)
+    {
+        if (index < 0 || index >= _testSegments.Count) return;
+        _testSegments[index].Background = new SolidColorBrush(
+            global::Windows.UI.Color.FromArgb(255, 255, 193, 7)); // amber/yellow
+    }
+
     public ReactorHost CreateHost()
     {
         var host = new ReactorHost(_window);