fix(player): 修正评论输入浮层初始键盘高度与聚焦

test/comment/drama_comments_sheet_test.dart

@@ -2,7 +2,9 @@
 
 import 'dart:convert';
 
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:fruitshorts/core/data/models/comment.dart';
 import 'package:fruitshorts/core/data/models/drama.dart';
@@ -33,6 +35,50 @@ const _drama = Drama(
 );
 
 void main() {
+  testWidgets('should_ignore_stale_keyboard_inset_when_composer_opens', (
+    tester,
+  ) async {
+    const keyboardChannel = MethodChannel('com.stormg.lumadrama/keyboard');
+    debugDefaultTargetPlatformOverride = TargetPlatform.android;
+    tester.binding.defaultBinaryMessenger.setMockMethodCallHandler(
+      keyboardChannel,
+      (call) async => call.method == 'get' ? 300 : null,
+    );
+    addTearDown(() {
+      tester.binding.defaultBinaryMessenger.setMockMethodCallHandler(
+        keyboardChannel,
+        null,
+      );
+      debugDefaultTargetPlatformOverride = null;
+    });
+    tester.view.physicalSize = const Size(390, 844);
+    tester.view.devicePixelRatio = 1;
+    addTearDown(tester.view.resetPhysicalSize);
+    addTearDown(tester.view.resetDevicePixelRatio);
+    final repository = FakeCommentRepository(pages: [const CommentPage()]);
+
+    await _pumpSheet(tester, repository: repository);
+    await tester.tap(find.byKey(const Key('comment-input-placeholder')));
+    await tester.pumpAndSettle();
+
+    final composer = find.byKey(const Key('comment-composer-sheet'));
+    final panel = find.byKey(const Key('comment-composer-panel'));
+    final input = find.byKey(const Key('comment-composer-input'));
+    expect(
+      find.byKey(const Key('comment-composer-focus-scope')),
+      findsOneWidget,
+    );
+    expect(tester.getSize(composer).height, inInclusiveRange(100, 150));
+    expect(
+      tester.getSize(panel).height,
+      closeTo(tester.getSize(composer).height, 1),
+    );
+    expect(tester.getBottomLeft(panel).dy, closeTo(844, 0.1));
+    expect(tester.widget<TextField>(input).focusNode?.hasFocus, isTrue);
+    expect(tester.testTextInput.isVisible, isTrue);
+    debugDefaultTargetPlatformOverride = null;
+  });
+
   setUp(() {
     SharedPreferencesAsyncPlatform.instance =
         InMemorySharedPreferencesAsync.withData({