fix: 去掉dotViews lazy缓存，直接操作当前View

问题：by lazy只初始化一次，view重建后dotViews缓存的是旧View，
renderDots操作的是已销毁的View→红点不显示。

修复：renderDots直接使用dotPool/dotPunch/dotComplete（始终指向当前View）。

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

app/src/main/java/com/xiaoqu/watch/ui/home/HomeFragment.kt

@@ -71,10 +71,6 @@ class HomeFragment : BaseFragment<FragmentHomeBinding>() {
     private lateinit var dotComplete: View
     /** 当前应显示红点的卡片集合（累积，只有显式操作才移除） */
     private val activeDotCards = mutableSetOf<Int>()
-    /** 红点 View 映射 */
-    private val dotViews: Map<Int, View> by lazy {
-        mapOf(2 to dotPool, 3 to dotPunch, 4 to dotComplete)
-    }
 
     // ===== 设置页 View 引用 =====
     private lateinit var tvAvatarLetter: TextView
@@ -575,9 +571,10 @@ class HomeFragment : BaseFragment<FragmentHomeBinding>() {
 
     /** 统一渲染红点：以 activeDotCards 为唯一数据源 */
     private fun renderDots() {
-        dotViews.forEach { (status, dot) ->
-            dot.visibility = if (status in activeDotCards) View.VISIBLE else View.GONE
-        }
+        dotPool.visibility = if (2 in activeDotCards) View.VISIBLE else View.GONE
+        dotPunch.visibility = if (3 in activeDotCards) View.VISIBLE else View.GONE
+        dotComplete.visibility = if (4 in activeDotCards) View.VISIBLE else View.GONE
+        Timber.d("首页: renderDots 完成 pool=${dotPool.visibility==View.VISIBLE} punch=${dotPunch.visibility==View.VISIBLE} complete=${dotComplete.visibility==View.VISIBLE}")
     }
 
     /** 标记某个分类已查看：从 activeDotCards 移除 + 通知管理器记录 */