fix: 图片点击放大修复（clickable + 关闭事件）

- 缩略图加 isClickable/isFocusable 防止被 ScrollView 拦截
- 全屏大图的 overlay 和 imageView 都设点击关闭
- 加日志确认 showFullImage 被触发

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

app/src/main/java/com/xiaoqu/watch/ui/task/TaskListFragment.kt

@@ -433,20 +433,28 @@ class TaskListFragment : BaseFragment<FragmentTaskListBinding>() {
                 }
                 scaleType = android.widget.ImageView.ScaleType.CENTER_CROP
                 setBackgroundColor(requireContext().getColor(R.color.card_background))
+                isClickable = true
+                isFocusable = true
             }
             loadImage(imageView, pic.url)
             // 点击放大全屏查看
-            imageView.setOnClickListener { showFullImage(pic.url) }
+            val picUrl = pic.url
+            imageView.setOnClickListener { showFullImage(picUrl) }
             binding.picContainer.addView(imageView)
         }
     }
 
-    /** 全屏显示大图（覆盖在当前页面上，点击关闭） */
+    /** 全屏显示大图（覆盖在当前页面上，点击任意位置关闭） */
     private fun showFullImage(url: String) {
         val container = requireActivity().findViewById<FrameLayout>(R.id.dialog_container)
         val overlay = FrameLayout(requireContext()).apply {
-            setBackgroundColor(0xE0000000.toInt())  // 半透明黑
+            layoutParams = FrameLayout.LayoutParams(
+                FrameLayout.LayoutParams.MATCH_PARENT,
+                FrameLayout.LayoutParams.MATCH_PARENT
+            )
+            setBackgroundColor(0xE0000000.toInt())
             isClickable = true
+            isFocusable = true
         }
         val imageView = android.widget.ImageView(requireContext()).apply {
             layoutParams = FrameLayout.LayoutParams(
@@ -454,15 +462,15 @@ class TaskListFragment : BaseFragment<FragmentTaskListBinding>() {
                 FrameLayout.LayoutParams.MATCH_PARENT
             )
             scaleType = android.widget.ImageView.ScaleType.FIT_CENTER
-            setPadding(0, 0, 0, 0)
         }
         overlay.addView(imageView)
-        // 点击关闭
-        overlay.setOnClickListener {
-            container.removeView(overlay)
-        }
         container.addView(overlay)
+        // 点击任意位置关闭（包括图片本身）
+        val dismiss = { container.removeView(overlay) }
+        overlay.setOnClickListener { dismiss() }
+        imageView.setOnClickListener { dismiss() }
         // 加载大图
+        Timber.d("查看大图: $url")
         loadImage(imageView, url)
     }