fix(chat): preserve media contracts after cleanup

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Copilot-Session: 1bf3409c-6c88-4d6c-b015-7e9cbf5e02da

Author: karkarl

src/OpenClaw.Tray.WinUI/Chat/ChatTimelinePresentationContext.cs

@@ -1,4 +1,5 @@
 using OpenClaw.Chat;
+using OpenClaw.Shared;
 
 namespace OpenClawTray.Chat;
 
@@ -22,4 +23,6 @@ public sealed record ChatTimelinePresentationContext(
     Func<string, Task>? OnReadAloud = null,
     Action? OnStopSpeaking = null,
     int ScrollToBottomToken = 0,
-    Action<string, string>? OnPermissionResponse = null);
+    Action<string, string>? OnPermissionResponse = null,
+    Func<string, ChatMediaContentInfo, CancellationToken, Task<AssistantMediaResolutionResult>>?
+        ResolveAssistantMediaAsync = null);

tests/OpenClaw.Tray.Tests/ChatAssistantMediaRendererContractTests.cs

@@ -44,17 +44,15 @@ public void ImageLoader_DoesNotRenderStateFromPreviousReference()
             StringComparison.Ordinal);
     }
 
-    [Theory]
-    [InlineData("ReactorChatTimeline.cs")]
-    [InlineData("OpenClawChatTimeline.cs")]
-    public void LocalAttachmentRenderer_UsesBoundedSharedDecoder(string fileName)
+    [Fact]
+    public void LocalAttachmentRenderer_UsesBoundedSharedDecoder()
     {
         var source = File.ReadAllText(Path.Combine(
             TestRepositoryPaths.GetRepositoryRoot(),
             "src",
             "OpenClaw.Tray.WinUI",
             "Chat",
-            fileName));
+            "ReactorChatTimeline.cs"));
 
         Assert.Contains(
             "ChatAttachmentBitmapDecoder.TryDecode(bytes)",

tests/OpenClaw.Tray.Tests/ChatUserBubbleTextContractTests.cs

@@ -11,7 +11,8 @@ public void UserPromptText_RendersSelectableRichTextBlockParagraph()
         Assert.Contains("content.Add(Text(", timeline);
         Assert.Contains("messageText,", timeline);
         Assert.Contains(".Set(text => text.IsTextSelectionEnabled = true)", timeline);
-        Assert.Contains(".AutomationName(entry.Text ?? string.Empty)", timeline);
+        Assert.Contains("var accessibleText = BuildAccessibleUserText(messageText, attachments)", timeline);
+        Assert.Contains(".AutomationName(accessibleText)", timeline);
     }
 
     private static string Read(params string[] parts)