fix(player): 收紧图片与快速切集资源占用

test/player/remote_image_decode_test.dart

@@ -0,0 +1,35 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:fruitshorts/core/widgets/remote_image.dart';
+
+void main() {
+  test('should_bound_layout_pixels_for_small_and_large_extents', () {
+    expect(resolveImageDecodePixels(12, 3), 96);
+    expect(resolveImageDecodePixels(120, 3), 360);
+    expect(resolveImageDecodePixels(4000, 3), 2048);
+  });
+
+  testWidgets('should_decode_grid_cover_at_layout_width_times_dpr', (
+    tester,
+  ) async {
+    await tester.pumpWidget(
+      MaterialApp(
+        home: MediaQuery(
+          data: const MediaQueryData(devicePixelRatio: 3),
+          child: Center(
+            child: SizedBox(
+              width: 120,
+              height: 160,
+              child: RemoteImage('/files/grid-cover.jpg'),
+            ),
+          ),
+        ),
+      ),
+    );
+
+    final image = tester.widget<Image>(find.byType(Image));
+    final provider = image.image as ResizeImage;
+    expect(provider.width, 360);
+    expect(provider.height, 480);
+  });
+}