Watch: activity line on working cards, All threads browsing, a thread's subagents, Load earlier, and markdown messages

watch/WristCode/WristCodeApp.swift

@@ -41,6 +41,12 @@ struct RootView: View {
                                 HostStatusView(hostId: id)
                             case .notifications:
                                 NotificationsView()
+                            case .allThreads:
+                                HostsView()
+                            case let .hostProjects(hostId):
+                                ProjectsView(hostId: hostId)
+                            case let .projectThreads(hostId, projectId):
+                                ProjectThreadsView(hostId: hostId, projectId: projectId)
                             }
                         }
                 }