Timeline: Enable jump to latest + in place refresh for all other timeline types

IceCubesApp/App/IceCubesApp.swift

@@ -26,7 +26,6 @@ struct IceCubesApp: App {
   @StateObject private var sidebarRouterPath = RouterPath()
 
   @State private var selectedTab: Tab = .timeline
-  @State private var selectSidebarItem: Tab? = .timeline
   @State private var popToRootTab: Tab = .other
   @State private var sideBarLoadedTabs: Set<Tab> = Set()
 

IceCubesApp/App/Tabs/Timeline/TimelineTab.swift

@@ -95,7 +95,7 @@ struct TimelineTab: View {
 
   @ViewBuilder
   private var timelineFilterButton: some View {
-    if timeline == .home {
+    if timeline.supportNewestPagination {
       Button {
         self.timeline = .latest
       } label: {

Packages/Timeline/Sources/Timeline/TimelineView.swift

@@ -103,7 +103,11 @@ public struct TimelineView: View {
     .navigationBarTitleDisplayMode(.inline)
     .onAppear {
       viewModel.isTimelineVisible = true
-      viewModel.client = client
+      
+      if viewModel.client == nil {
+        viewModel.client = client
+      }
+      
       viewModel.timeline = timeline
     }
     .onDisappear {

Packages/Timeline/Sources/Timeline/TimelineViewModel.swift

@@ -12,9 +12,9 @@ class TimelineViewModel: ObservableObject {
     didSet {
       timelineTask?.cancel()
       timelineTask = Task {
-        if timeline == .latest, let client {
-          await cache.clearCache(for: client.id)
-          timeline = .home
+        if timeline == .latest {
+          await clearHomeCache()
+          timeline = oldValue
         }
         if oldValue != timeline {
           await datasource.reset()
@@ -68,7 +68,7 @@ class TimelineViewModel: ObservableObject {
   }
 
   var pendingStatusesEnabled: Bool {
-    timeline == .home
+    timeline.supportNewestPagination
   }
 
   var serverName: String {
@@ -100,6 +100,7 @@ class TimelineViewModel: ObservableObject {
   func handleEvent(event: any StreamEvent, currentAccount _: CurrentAccount) {
     Task {
       if let event = event as? StreamEventUpdate,
+         timeline == .home,
          canStreamEvents,
          isTimelineVisible,
          pendingStatusesEnabled,
@@ -151,6 +152,12 @@ extension TimelineViewModel {
     }
     return nil
   }
+  
+  private func clearHomeCache() async {
+    if let client, timeline == .home {
+      await cache.clearCache(for: client.id)
+    }
+  }
 }
 
 // MARK: - StatusesFetcher