feat: add DogParkScreen for full-screen easter egg video

core/src/main/kotlin/plus/rua/project/ui/DogParkScreen.kt

@@ -0,0 +1,92 @@
+package plus.rua.project.ui
+
+import android.view.ViewGroup
+import android.widget.FrameLayout
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.DisposableEffect
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.viewinterop.AndroidView
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.LifecycleEventObserver
+import androidx.lifecycle.compose.LocalLifecycleOwner
+import androidx.media3.common.MediaItem
+import androidx.media3.common.Player
+import androidx.media3.common.PlaybackException
+import androidx.media3.exoplayer.ExoPlayer
+import androidx.media3.ui.AspectRatioFrameLayout
+import androidx.media3.ui.PlayerView
+
+/**
+ * 小狗乐园彩蛋页面，全屏循环播放彩蛋视频。
+ *
+ * 特性：
+ * - 视频源：`asset:///video/enter_screen_bg1.mp4`
+ * - 等比裁剪铺满全屏（`RESIZE_MODE_ZOOM`）
+ * - 静音、无播放控件、循环播放
+ * - 跟随生命周期自动 play / pause，离开页面时自动释放
+ *
+ * @param onPlaybackError 播放出错时的回调（通常由调用方 finish Activity）
+ * @param modifier 布局修饰符
+ */
+@Composable
+fun DogParkScreen(
+    onPlaybackError: () -> Unit,
+    modifier: Modifier = Modifier
+) {
+    val context = LocalContext.current
+    val lifecycleOwner = LocalLifecycleOwner.current
+    val player = remember(context) {
+        ExoPlayer.Builder(context).build().apply {
+            volume = 0f
+            repeatMode = Player.REPEAT_MODE_ONE
+            setMediaItem(MediaItem.fromUri("asset:///video/enter_screen_bg1.mp4"))
+            addListener(object : Player.Listener {
+                override fun onPlayerError(error: PlaybackException) {
+                    onPlaybackError()
+                }
+            })
+            prepare()
+            if (lifecycleOwner.lifecycle.currentState.isAtLeast(Lifecycle.State.RESUMED)) {
+                play()
+            }
+        }
+    }
+
+    DisposableEffect(player, lifecycleOwner) {
+        val observer = LifecycleEventObserver { _, event ->
+            when (event) {
+                Lifecycle.Event.ON_RESUME -> player.play()
+                Lifecycle.Event.ON_PAUSE -> player.pause()
+                else -> Unit
+            }
+        }
+        lifecycleOwner.lifecycle.addObserver(observer)
+
+        onDispose {
+            lifecycleOwner.lifecycle.removeObserver(observer)
+            player.release()
+        }
+    }
+
+    AndroidView(
+        factory = { ctx ->
+            PlayerView(ctx).apply {
+                layoutParams = FrameLayout.LayoutParams(
+                    ViewGroup.LayoutParams.MATCH_PARENT,
+                    ViewGroup.LayoutParams.MATCH_PARENT
+                )
+                useController = false
+                resizeMode = AspectRatioFrameLayout.RESIZE_MODE_ZOOM
+            }
+        },
+        update = { playerView ->
+            if (playerView.player != player) {
+                playerView.player = player
+            }
+        },
+        modifier = modifier.fillMaxSize()
+    )
+}