mac app active tool animation

mac/Sources/Byre/Store.swift

@@ -18,7 +18,7 @@ struct TaskState {
 }
 
 private let workingTitles: [ByreTask.StatePayload: String] = [
-    .running: "The agent is mid-turn",
+    .running: "The agent is mid-turn or its subagents are running",
     .reviewPending: "A review of the turn's work is about to start",
     .reviewing: "A review is running",
     .discarding: "Discarding",
@@ -488,7 +488,7 @@ final class Store {
                     try await self.loadTasks(projectId)
                 }
             }
-        case "session.created", "session.state", "session.model":
+        case "session.created", "session.state", "session.subagents", "session.model":
             if ev.owner != nil {
                 spawn("load lead sessions") {
                     try await self.loadLeadSessions()