Fix misleading "no longer running" state detail when container fails to start

src/Aspire.Dashboard/Extensions/ResourceViewModelExtensions.cs

@@ -27,6 +27,11 @@ public static bool IsStopped(this ResourceViewModel resource)
         return resource.KnownState is KnownResourceState.Exited or KnownResourceState.Finished or KnownResourceState.FailedToStart;
     }
 
+    public static bool IsFailedToStart(this ResourceViewModel resource)
+    {
+        return resource.KnownState is KnownResourceState.FailedToStart;
+    }
+
     public static bool IsUnusableTransitoryState(this ResourceViewModel resource)
     {
         return resource.KnownState is KnownResourceState.Starting or KnownResourceState.Building or KnownResourceState.Waiting or KnownResourceState.Stopping;

src/Aspire.Dashboard/Model/ResourceStateViewModel.cs

@@ -103,7 +103,11 @@ private static (Icon icon, Color color) GetStateIcon(ResourceViewModel resource)
     /// </remarks>
     internal static string GetResourceStateTooltip(ResourceViewModel resource, IStringLocalizer<Columns> loc)
     {
-        if (resource.IsStopped())
+        if (resource.IsFailedToStart())
+        {
+            return loc.GetString(nameof(Columns.StateColumnResourceFailedToStart), resource.ResourceType);
+        }
+        else if (resource.IsStopped())
         {
             if (resource.TryGetExitCode(out var exitCode) && exitCode is not 0)
             {

src/Aspire.Dashboard/Resources/Columns.resx

@@ -125,6 +125,10 @@
     <value>{0} is no longer running</value>
     <comment>{0} is a resource type</comment>
   </data>
+  <data name="StateColumnResourceFailedToStart" xml:space="preserve">
+    <value>{0} failed to start</value>
+    <comment>{0} is a resource type</comment>
+  </data>
   <data name="SourceColumnDisplayCopyCommandToClipboard" xml:space="preserve">
     <value>Copy full command to clipboard</value>
   </data>

tests/Aspire.Dashboard.Tests/Model/ResourceStateViewModelTests.cs

@@ -31,6 +31,13 @@ public class ResourceStateViewModelTests
     [InlineData(
         /* state */ "CustomResource", KnownResourceState.Finished, null, null, null,
         /* expected output */ $"Localized:{nameof(Columns.StateColumnResourceExited)}:CustomResource", "RecordStop", Color.Info, "Finished")]
+    // Resource failed to start - should use dedicated message, not "no longer running"
+    [InlineData(
+        /* state */ "Container", KnownResourceState.FailedToStart, null, null, null,
+        /* expected output */ $"Localized:{nameof(Columns.StateColumnResourceFailedToStart)}:Container", "Warning", Color.Warning, "Failed to start")]
+    [InlineData(
+        /* state */ "CustomResource", KnownResourceState.FailedToStart, null, null, null,
+        /* expected output */ $"Localized:{nameof(Columns.StateColumnResourceFailedToStart)}:CustomResource", "Warning", Color.Warning, "Failed to start")]
     [InlineData(
         /* state */ "Container", KnownResourceState.Unknown, null, null, null,
         /* expected output */ "Unknown", "CircleHint", Color.Info, "Unknown")]