simplify. remove tick

examples/spinner.clj

@@ -32,10 +32,10 @@
         (tui/key= msg [:ctrl \c]))
     [model tui/quit]
 
-    ;; Tick - advance frame
-    (= (first msg) :tick)
+    ;; Spinner frame - advance animation
+    (= msg :spinner-frame)
     (if (:loading model)
-      [(update model :frame inc) (tui/tick 80)]
+      [(update model :frame inc) (tui/after 80 :spinner-frame)]
       [model nil])
 
     ;; Space - simulate completion
@@ -53,7 +53,7 @@
     ;; r - restart
     (tui/key= msg "r")
     [(assoc model :loading true :frame 0 :message "Loading...")
-     (tui/tick 80)]
+     (tui/after 80 :spinner-frame)]
 
     :else
     [model nil]))
@@ -86,5 +86,5 @@
   (tui/run {:init initial-model
             :update update-model
             :view view
-            :init-cmd (tui/tick 80)})
+            :init-cmd (tui/after 80 :spinner-frame)})
   (println "Spinner demo finished."))