Change animation frames (#3627)

## Description
- Changes animation frames to be smaller
- Cleans up file names and popup logic

## tests
- Passes local CI

codex-rs/tui/frames/slug/frame_33.txt

@@ -0,0 +1,17 @@
+                                      
+               dttototox-d            
+            dtpeeopoxce-epep-         
+          d5oetpttoge  gp5eetgt       
+         to5e5detd        peeodp      
+        d-e5eee5odo         etood     
+        55t   odooeot        5o5do    
+        eet g  otpedeo       epee     
+        pett   tppo5ot       ogep     
+        eee e te 5ptttcootxxt5deox    
+        d5epg5ct5exedddddeepdddxe-    
+        ooot e5e5 5 ggggppp eet5de    
+         otoptgt           55c5o5     
+          pogptpct      dtet5pop      
+            oxgpotetctdgctopxp        
+              goottddddtpc-g          
+                   eeee