fix: add upscale button to mobile touch visibility rules

The ⬆ button now shows on touch devices (pointer: coarse) with
0.7 opacity, same as the other card action buttons.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

resources/report.css

@@ -685,13 +685,15 @@ body {
 @media (hover: none) and (pointer: coarse) {
     .revise-btn,
     .reject-btn,
-    .favorite-btn {
+    .favorite-btn,
+    .upscale-btn {
         opacity: 0.7;
     }
-    
+
     .card:active .revise-btn,
     .card:active .reject-btn,
-    .card:active .favorite-btn {
+    .card:active .favorite-btn,
+    .card:active .upscale-btn {
         opacity: 1;
     }