mac app active tool animation

mac/Sources/Byre/Chat.swift

@@ -92,6 +92,14 @@ final class ChatModel {
         builder.open && session?.state == .running
     }
 
+    var subagents: Bool {
+        (session?.subagents ?? 0) > 0
+    }
+
+    func working(_ row: Row) -> Bool {
+        row.pending && (running || subagents && row.inActive) || row.active && (running || subagents)
+    }
+
     var hasOlder: Bool {
         kind == .lead && store.leadHasOlder()
     }
@@ -609,6 +617,7 @@ struct DetailsBox<Summary: View, Content: View>: View {
     @ViewBuilder let content: Content
     @Environment(\.paneAccent) private var accent
     @ViewState private var open = false
+    @ViewState private var shown = false
 
     var body: some View {
         VStack(alignment: .leading, spacing: 0) {
@@ -637,9 +646,13 @@ struct DetailsBox<Summary: View, Content: View>: View {
         .background(boxed ? (nested ? Palette.raised : Palette.surface) : .clear, in: RoundedRectangle(cornerRadius: 8))
         .overlay {
             if boxed {
-                RoundedRectangle(cornerRadius: 8).stroke(working ? accent : Palette.border)
+                RoundedRectangle(cornerRadius: 8).stroke(working && shown ? accent : Palette.border)
+                    .animation(.easeInOut(duration: 0.6), value: working && shown)
             }
         }
+        .onAppear {
+            shown = true
+        }
     }
 }
 
@@ -747,7 +760,7 @@ struct RowView: View {
             }
 
         case .tool(let name, let brief, let input):
-            DetailsBox(nested: nested, working: model.running && row.pending) {
+            DetailsBox(nested: nested, working: model.working(row)) {
                 SubagentTag(show: row.tag)
                 Text(styled([(name, 600, nil), (" ", 400, nil), (brief, 400, Palette.muted)]))
             } content: {
@@ -759,7 +772,7 @@ struct RowView: View {
             }
 
         case .subagent(let title, let description, let prompt):
-            DetailsBox(nested: nested, working: model.running && row.pending) {
+            DetailsBox(nested: nested, working: model.working(row)) {
                 SubagentTag(show: row.tag)
                 Text(styled([(title, 600, nil), (" ", 400, nil), (description, 400, Palette.muted)]))
                 Spacer(minLength: 12)
@@ -778,7 +791,7 @@ struct RowView: View {
             }
 
         case .group:
-            DetailsBox(nested: nested, working: model.running && row.pending) {
+            DetailsBox(nested: nested, working: model.working(row)) {
                 SubagentTag(show: row.tag)
                 RunSummary(calls: row.calls)
             } content: {