Run byre and the app on their own embedded Tailscale nodes

mac/Sources/Byre/Chat.swift

@@ -1682,8 +1682,11 @@ struct NoteView: View {
                 out += AttributedString(s)
             case .task(let id):
                 out += taskLink(store, id)
-            case .url(let port):
-                let url = previewURL(store.api.origin, Int(port) ?? 0)
+            case .preview(let taskId, let port):
+                guard let url = store.forwards.url(taskId, port) else {
+                    out += AttributedString("port \(port)")
+                    continue
+                }
                 var a = AttributedString(url.absoluteString)
                 a.link = url
                 a.foregroundColor = Palette.accent
@@ -1707,15 +1710,6 @@ func taskLink(_ store: Store, _ id: String) -> AttributedString {
     return a
 }
 
-func previewURL(_ origin: URL, _ port: Int) -> URL {
-    var c = URLComponents()
-    c.scheme = "https"
-    c.host = origin.host()
-    c.port = port
-    c.path = "/"
-    return c.url!
-}
-
 private struct SnapshotRow: View {
     let snap: Snapshot
     let review: Review?