polish: 扫码按钮放大128→144rpx 图标文字间距加大

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

haha-admin-mp/src/pages/replenish/home.vue

@@ -211,7 +211,7 @@ onShow(async () => { await loadData(); });
   &:active { opacity: 0.7; }
 }
 
-.scan-fab { position: fixed; left: 50%; bottom: calc(80rpx + env(safe-area-inset-bottom)); transform: translateX(-50%); width: 128rpx; height: 128rpx; border-radius: 50%; background: $primary-color; box-shadow: 0 12rpx 36rpx rgba(255,193,7,0.4); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4rpx; z-index: 1000;
+.scan-fab { position: fixed; left: 50%; bottom: calc(80rpx + env(safe-area-inset-bottom)); transform: translateX(-50%); width: 144rpx; height: 144rpx; border-radius: 50%; background: $primary-color; box-shadow: 0 12rpx 36rpx rgba(255,193,7,0.4); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6rpx; z-index: 1000;
   &:active { transform: translateX(-50%) scale(0.92); background: $primary-color-dark; }
 }
 .scan-label { font-size: 20rpx; font-weight: 600; color: $text-color-primary; line-height: 1; }