diff --git a/integration_test/windows_b6_input_test.dart b/integration_test/windows_b6_input_test.dart
new file mode 100644
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+++ b/integration_test/windows_b6_input_test.dart
@@ -0,0 +1,208 @@
+import 'dart:io';
+
+import 'package:flutter/gestures.dart' show kBackMouseButton, kForwardMouseButton, kPrimaryButton, PointerDeviceKind;
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:integration_test/integration_test.dart';
+import 'package:jj_mkvmaker/app/app_controller.dart';
+import 'package:jj_mkvmaker/app/i18n_controller.dart';
+import 'package:jj_mkvmaker/platform/windows/desktop_storage_service.dart';
+import 'package:jj_mkvmaker/platform/windows/process_media_tool.dart';
+import 'package:jj_mkvmaker/services/platform_services.dart';
+import 'package:jj_mkvmaker/ui/explorer_page.dart';
+import 'package:jj_mkvmaker/ui/theme.dart';
+import 'package:path/path.dart' as p;
+
+/// 관리자 지시 9 (10/17): 82 끌어 놓기 · 75 마우스 4 · 5 번을 Windows 실제 빌드에서 가짜 포인터로 (실제 마우스 · 키보드는 쓰지 않음).
+/// 82: 8px 문턱 (안 넘으면 끌기 아님) · 놓을 수 있는 창 강조 / 같은 창은 빨간 테두리 · 묻기 창 · 이동 뒤 [되돌리기].
+/// 75: 마우스가 올라간 창의 뒤로 · 앞으로 (4 · 5 번) · Alt+← / →.
+/// 시험 파일은 임시 폴더에만 (끝나면 지움), 설정은 메모리에만. 실행: flutter test integration_test\windows_b6_input_test.dart -d windows
+void main() {
+  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
+  late Directory tmp;
+  late String left, right;
+  late AppController c;
+
+  setUp(() async {
+    await i18n.apply('ko', save: false);
+    tmp = Directory.systemTemp.createTempSync('jj_b6input_');
+    left = p.join(tmp.path, 'left');
+    right = p.join(tmp.path, 'right');
+    File(p.join(left, 'doc.txt'))
+      ..createSync(recursive: true)
+      ..writeAsStringSync('hello');
+    File(p.join(left, 'sub', 'inner.txt'))
+      ..createSync(recursive: true)
+      ..writeAsStringSync('inner');
+    File(p.join(right, 'note.txt'))
+      ..createSync(recursive: true)
+      ..writeAsStringSync('n');
+    File(p.join(right, 'r1', 'x.txt'))
+      ..createSync(recursive: true)
+      ..writeAsStringSync('x');
+    c = AppController(PlatformServices(mediaTool: ProcessMediaTool('x', 'y'), storage: DesktopStorageService()));
+    c.settings
+      ..explorerPaths = [left, right]
+      ..explorerDropAction = 'ask';
+  });
+  tearDown(() async {
+    for (var i = 0;; i++) {
+      try {
+        if (tmp.existsSync()) tmp.deleteSync(recursive: true);
+        return;
+      } on FileSystemException {
+        if (i >= 50) rethrow;
+        await Future<void>.delayed(const Duration(milliseconds: 100));
+      }
+    }
+  });
+
+  /// 실제 시간으로 [done] 까지 (최대 약 [ms] 밀리초)
+  Future<void> until(WidgetTester t, bool Function() done, {int ms = 8000}) async {
+    for (var i = 0; i < ms ~/ 50 && !done(); i++) {
+      await t.pump(const Duration(milliseconds: 50));
+    }
+  }
+
+  Future<void> open(WidgetTester t) async {
+    t.view.physicalSize = const Size(1600, 900);
+    t.view.devicePixelRatio = 1;
+    addTearDown(t.view.reset);
+    await t.pumpWidget(MaterialApp(theme: buildTheme(), debugShowCheckedModeBanner: false, home: ExplorerPage(c: c)));
+    await until(t, () => find.text('doc.txt').evaluate().isNotEmpty && find.text('r1').evaluate().isNotEmpty);
+    expect(find.text('doc.txt'), findsOneWidget);
+  }
+
+  /// 창 테두리: 놓을 수 있음 (강조색 2px) · 못 놓음 (빨간 2px) 인 창 수
+  int frames(Color color) => find
+      .byWidgetPredicate((w) =>
+          w is Container &&
+          w.decoration is BoxDecoration &&
+          ((w.decoration! as BoxDecoration).border as Border?)?.top.color == color &&
+          ((w.decoration! as BoxDecoration).border as Border?)?.top.width == 2)
+      .evaluate()
+      .length;
+
+  /// 오른쪽 창의 [name] (두 창에 같은 이름이면 오른쪽 것)
+  Offset rightOf(WidgetTester t, String name) {
+    final all = find.text(name).evaluate().map((e) => t.getCenter(find.byWidget(e.widget).first)).toList()
+      ..sort((x, y) => x.dx.compareTo(y.dx));
+    return all.last;
+  }
+
+  /// 폴더 줄 강조 (놓으면 그 폴더 안으로) 수
+  int rowLit() => find
+      .byWidgetPredicate((w) =>
+          w is DecoratedBox &&
+          w.decoration is BoxDecoration &&
+          ((w.decoration as BoxDecoration).border as Border?)?.top.color == JjColors.accent &&
+          ((w.decoration as BoxDecoration).border as Border?)?.top.width == 1.5)
+      .evaluate()
+      .length;
+
+  int feedback() => find.byIcon(Icons.drive_file_move_outline).evaluate().length;
+
+  testWidgets('82: 8px 문턱 · 놓을 곳 강조 · 같은 창은 빨간 테두리 · 묻기 창 [이동] · [되돌리기]', (t) async {
+    await open(t);
+    final doc = t.getCenter(find.text('doc.txt'));
+    final before = feedback();
+    final lit0 = rowLit();
+    // 1) 8px 이하로 움직이면 끌기가 아니다 (끄는 그림 없음 · 놓아도 묻지 않음)
+    var g = await t.startGesture(doc, kind: PointerDeviceKind.mouse);
+    await g.moveBy(const Offset(6, 0));
+    await t.pump(const Duration(milliseconds: 100));
+    expect(feedback(), before, reason: '6px - 끌기 아님');
+    await g.up();
+    await until(t, () => false, ms: 400);
+    expect(find.byType(AlertDialog), findsNothing);
+
+    // 2) 8px 를 넘으면 끌기 - 같은 창 (sub) 위는 빨간 테두리, 오른쪽 창 위는 강조
+    g = await t.startGesture(doc, kind: PointerDeviceKind.mouse);
+    await g.moveBy(const Offset(12, 0));
+    await t.pump(const Duration(milliseconds: 100));
+    expect(feedback(), before + 1, reason: '12px - 끄는 그림');
+    await g.moveTo(t.getCenter(find.text('sub')));
+    await t.pump(const Duration(milliseconds: 100));
+    expect(frames(JjColors.danger), 1, reason: '같은 창 = 못 놓음');
+    // 오른쪽 창의 폴더 줄 (right) 위 = 그 줄만 강조 (그 폴더 안으로)
+    await g.moveTo(rightOf(t, 'right'));
+    await t.pump(const Duration(milliseconds: 100));
+    expect(rowLit(), greaterThan(lit0), reason: '폴더 줄 = 그 줄 강조 (lit0=$lit0)');
+    // 오른쪽 창의 파일 줄 위 = 창 전체 강조 (그 창의 지금 폴더로). 임시 폴더라 빈 곳이 없어 파일 줄로
+    await g.moveTo(rightOf(t, 'note.txt'));
+    await t.pump(const Duration(milliseconds: 100));
+    expect(rowLit(), lit0, reason: '파일 줄 = 줄 강조 없음');
+    expect(frames(JjColors.accent), 1, reason: '오른쪽 창 = 놓을 수 있음');
+    expect(frames(JjColors.danger), 0);
+    // 3) 놓으면 묻기 창 - [이동]
+    await g.up();
+    await until(t, () => find.text('1개 항목을 놓았습니다').evaluate().isNotEmpty);
+    expect(find.text('1개 항목을 놓았습니다'), findsOneWidget);
+    expect(find.widgetWithText(FilledButton, '복사'), findsOneWidget, reason: '처음 고른 단추는 [복사]');
+    await t.tap(find.widgetWithText(OutlinedButton, '이동'));
+    // 지금의 이동 확인 창
+    await until(t, () => find.widgetWithText(FilledButton, '이동').evaluate().isNotEmpty);
+    await t.tap(find.widgetWithText(FilledButton, '이동'));
+    await until(t, () => find.text('되돌리기').evaluate().isNotEmpty);
+    expect(File(p.join(right, 'doc.txt')).existsSync(), isTrue);
+    expect(File(p.join(left, 'doc.txt')).existsSync(), isFalse);
+    // 4) [되돌리기] → 원래 자리로 (지금의 이동 확인 창)
+    await t.tap(find.text('되돌리기'));
+    await until(t, () => find.widgetWithText(FilledButton, '이동').evaluate().isNotEmpty);
+    await t.tap(find.widgetWithText(FilledButton, '이동'));
+    await until(t, () => File(p.join(left, 'doc.txt')).existsSync() && !File(p.join(right, 'doc.txt')).existsSync());
+    expect(File(p.join(left, 'doc.txt')).readAsStringSync(), 'hello');
+    expect(File(p.join(right, 'doc.txt')).existsSync(), isFalse);
+    ScaffoldMessenger.of(t.element(find.byType(ExplorerPage))).clearSnackBars();
+    await until(t, () => false, ms: 2000);
+  });
+
+  testWidgets('75: 마우스 4 · 5 번은 마우스가 올라간 창에 · Alt+← / →', (t) async {
+    await open(t);
+    String at(int i) => c.settings.explorerPaths[i];
+    final sub = p.join(left, 'sub'), r1 = p.join(right, 'r1');
+    await t.tap(find.text('r1'));
+    await until(t, () => at(1) == r1 && find.text('x.txt').evaluate().isNotEmpty);
+    await t.tap(find.text('sub'));
+    await until(t, () => at(0) == sub && find.text('inner.txt').evaluate().isNotEmpty);
+    expect([at(0), at(1)], [sub, r1]);
+
+    Future<void> mouse(int button, Offset at) async {
+      final g = await t.createGesture(kind: PointerDeviceKind.mouse, buttons: button);
+      await g.addPointer(location: at);
+      await g.down(at);
+      await t.pump(const Duration(milliseconds: 30));
+      await g.up();
+      await g.removePointer();
+    }
+
+    // 오른쪽 창 위에서 4 번 (뒤로) - 오른쪽만 (왼쪽이 활성이었어도)
+    await mouse(kBackMouseButton, t.getCenter(find.text('x.txt')));
+    await until(t, () => at(1) == right);
+    expect([at(0), at(1)], [sub, right]);
+    // 오른쪽 창 위에서 5 번 (앞으로)
+    await mouse(kForwardMouseButton, rightOf(t, 'r1'));
+    await until(t, () => at(1) == r1);
+    expect([at(0), at(1)], [sub, r1]);
+    // 왼쪽 창 위에서 4 번 - 왼쪽만
+    await mouse(kBackMouseButton, t.getCenter(find.text('doc.txt')));
+    await until(t, () => at(0) == left);
+    expect([at(0), at(1)], [left, r1]);
+    // Alt+→ / Alt+← - 활성 창 (방금 마우스를 쓴 왼쪽)
+    await t.sendKeyDownEvent(LogicalKeyboardKey.altLeft);
+    await t.sendKeyEvent(LogicalKeyboardKey.arrowRight);
+    await t.sendKeyUpEvent(LogicalKeyboardKey.altLeft);
+    await until(t, () => at(0) == sub);
+    expect([at(0), at(1)], [sub, r1]);
+    await t.sendKeyDownEvent(LogicalKeyboardKey.altLeft);
+    await t.sendKeyEvent(LogicalKeyboardKey.arrowLeft);
+    await t.sendKeyUpEvent(LogicalKeyboardKey.altLeft);
+    await until(t, () => at(0) == left);
+    expect([at(0), at(1)], [left, r1]);
+    // 왼쪽 단추 (보통 누르기) 는 뒤로 · 앞으로가 아니다
+    await mouse(kPrimaryButton, t.getCenter(find.text('doc.txt')));
+    await until(t, () => false, ms: 400);
+    expect([at(0), at(1)], [left, r1]);
+  });
+}