fix(home): 宜忌恢复点击放大+生肖移到日历/月历切换按钮旁边

1. 大框内的宜忌区域加回 bindtap=openZoom(data-type=yiji)，点击可全屏查看放大宜忌
2. 生肖（马年）从导航栏右侧移到左侧切换按钮旁边
3. 标题改为绝对定位居中，保持导航栏对称

mini/pages/home/home.wxss

@@ -13,6 +13,13 @@
   align-items: center;
   justify-content: space-between;
   padding: 0 24rpx;
+  position: relative;
+}
+
+.nav-left {
+  display: flex;
+  align-items: center;
+  gap: 16rpx;
 }
 
 .nav-toggle {
@@ -36,6 +43,13 @@
   font-size: 34rpx;
   font-weight: 600;
   letter-spacing: 4rpx;
+  position: absolute;
+  left: 50%;
+  transform: translateX(-50%);
+}
+
+.nav-placeholder {
+  min-width: 96rpx;
 }
 
 .nav-right {
@@ -46,8 +60,9 @@
 
 .nav-zodiac {
   color: #FFFFFF;
-  font-size: 24rpx;
+  font-size: 26rpx;
   opacity: 0.9;
+  font-weight: 500;
 }
 
 .page-body {