fix: ViewPager2 子页面设置 match_parent LayoutParams

ViewPager2 要求子页面必须填满，inflate 时未指定 parent 导致 LayoutParams 丢失。

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

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

@@ -16,7 +16,13 @@ class HomePagerAdapter(
     class PageViewHolder(val view: View) : RecyclerView.ViewHolder(view)
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): PageViewHolder {
-        return PageViewHolder(pages[viewType])
+        val view = pages[viewType]
+        // ViewPager2 要求子页面必须 match_parent
+        view.layoutParams = ViewGroup.LayoutParams(
+            ViewGroup.LayoutParams.MATCH_PARENT,
+            ViewGroup.LayoutParams.MATCH_PARENT
+        )
+        return PageViewHolder(view)
     }
 
     override fun onBindViewHolder(holder: PageViewHolder, position: Int) {