fix: 修复 iOS Safari 快速点击按钮触发页面缩放问题

- 添加 touch-action: manipulation 禁用双击缩放
- 添加 -webkit-tap-highlight-color: transparent 移除点击高亮
- 在全局样式和修改评分页面按钮上应用

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

common/common.css

@@ -28,3 +28,14 @@ button::after {
 input {
   outline: none;
 }
+
+/* 防止 iOS Safari 双击缩放 */
+button, .control-btn, [class*="btn"] {
+  touch-action: manipulation;
+  -webkit-tap-highlight-color: transparent;
+}
+
+/* 全局禁用双击缩放 */
+html {
+  touch-action: manipulation;
+}

pages/modify-score/modify-score.vue

@@ -459,6 +459,10 @@ export default {
 }
 
 .control-btn {
+  touch-action: manipulation;
+  -webkit-tap-highlight-color: transparent;
+  user-select: none;
+  -webkit-user-select: none;
   width: 140rpx;
   height: 140rpx;
   display: flex;