feat: implement global pull-to-refresh functionality and refine UI typography and layout scaling for improved mobile UX.

src/app/globals.css

@@ -121,11 +121,14 @@
   * {
     @apply border-border outline-ring/50;
   }
-  body {
-    @apply bg-background text-foreground;
-  }
   html {
     @apply font-sans;
+    -webkit-text-size-adjust: 100%;
+  }
+  body {
+    @apply bg-background text-foreground;
+    -webkit-tap-highlight-color: transparent;
+    -webkit-touch-callout: none;
   }
   html:lang(ne) {
     font-family:
@@ -134,6 +137,9 @@
       system-ui,
       sans-serif;
   }
+  button, a, [role="button"] {
+    touch-action: manipulation;
+  }
 }
 
 /* 玩家端 Toast：顶部居中、紧凑尺寸（位置见 components/ui/sonner.tsx） */