clear merged

mac/Sources/Byre/Chat.swift

@@ -379,7 +379,14 @@ private struct ChatHead: View {
             }
         case .task(let id):
             if let id, let task = store.findTask(id) {
-                if task.status != .active {
+                if task.status == .merged {
+                    let commit = task.mergeCommit ?? ""
+                    header(background: Palette.okTint) {
+                        Text("✓").foregroundStyle(Palette.ok)
+                        Text("Merged\(commit.isEmpty ? "" : " as \(commit.prefix(7))")")
+                            .foregroundStyle(Palette.text)
+                    }
+                } else if task.status != .active {
                     header {
                         Text(task.status.rawValue)
                     }
@@ -401,13 +408,14 @@ private struct ChatHead: View {
         }
     }
 
-    private func header<Content: View>(@ViewBuilder _ content: () -> Content) -> some View {
+    private func header<Content: View>(background: Color = .clear, @ViewBuilder _ content: () -> Content) -> some View {
         HStack(spacing: 8) {
             content()
         }
         .frame(maxWidth: .infinity, alignment: .leading)
         .padding(.horizontal, 16)
         .padding(.vertical, 8)
+        .background(background)
         .overlay(alignment: .bottom) {
             Rectangle().fill(Palette.border).frame(height: 1)
         }