fix(auth): 登录注册与手机号登录键盘避让

test/auth/auth_page_test.dart

@@ -1,6 +1,8 @@
 import 'dart:async';
 
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:provider/provider.dart';
 import 'package:shared_preferences_platform_interface/in_memory_shared_preferences_async.dart';
@@ -263,6 +265,90 @@ void main() {
       expect(tester.takeException(), isNull);
     },
   );
+
+  testWidgets('should_keep_password_above_ios_keyboard', (tester) async {
+    debugDefaultTargetPlatformOverride = TargetPlatform.iOS;
+    addTearDown(() => debugDefaultTargetPlatformOverride = null);
+    tester.view.physicalSize = const Size(390, 844);
+    tester.view.devicePixelRatio = 1;
+    tester.view.viewInsets = const FakeViewPadding(bottom: 300);
+    addTearDown(tester.view.resetPhysicalSize);
+    addTearDown(tester.view.resetDevicePixelRatio);
+    addTearDown(tester.view.resetViewInsets);
+
+    await pumpAuthPage(tester);
+    await tester.tap(find.byKey(const Key('auth-password')));
+    await tester.pumpAndSettle();
+
+    _expectAboveKeyboard(tester, const Key('auth-password'), 300);
+    debugDefaultTargetPlatformOverride = null;
+  });
+
+  testWidgets('should_keep_signup_password_above_ios_keyboard', (tester) async {
+    debugDefaultTargetPlatformOverride = TargetPlatform.iOS;
+    addTearDown(() => debugDefaultTargetPlatformOverride = null);
+    tester.view.physicalSize = const Size(390, 844);
+    tester.view.devicePixelRatio = 1;
+    tester.view.viewInsets = const FakeViewPadding(bottom: 300);
+    addTearDown(tester.view.resetPhysicalSize);
+    addTearDown(tester.view.resetDevicePixelRatio);
+    addTearDown(tester.view.resetViewInsets);
+
+    await pumpAuthPage(tester, signUp: true);
+    await tester.tap(find.byKey(const Key('auth-password')));
+    await tester.pumpAndSettle();
+
+    _expectAboveKeyboard(tester, const Key('auth-password'), 300);
+    debugDefaultTargetPlatformOverride = null;
+  });
+
+  testWidgets('should_keep_password_above_android_channel_keyboard', (
+    tester,
+  ) async {
+    debugDefaultTargetPlatformOverride = TargetPlatform.android;
+    addTearDown(() => debugDefaultTargetPlatformOverride = null);
+    const keyboardChannel = MethodChannel('com.stormg.lumadrama/keyboard');
+    tester.binding.defaultBinaryMessenger.setMockMethodCallHandler(
+      keyboardChannel,
+      (call) async => call.method == 'get' ? 300 : null,
+    );
+    addTearDown(() {
+      tester.binding.defaultBinaryMessenger.setMockMethodCallHandler(
+        keyboardChannel,
+        null,
+      );
+    });
+    tester.view.physicalSize = const Size(390, 844);
+    tester.view.devicePixelRatio = 1;
+    tester.view.viewInsets = const FakeViewPadding();
+    addTearDown(tester.view.resetPhysicalSize);
+    addTearDown(tester.view.resetDevicePixelRatio);
+    addTearDown(tester.view.resetViewInsets);
+
+    await pumpAuthPage(tester);
+    await tester.binding.defaultBinaryMessenger.handlePlatformMessage(
+      keyboardChannel.name,
+      const StandardMethodCodec().encodeMethodCall(
+        const MethodCall('insetsChanged', 300),
+      ),
+      (_) {},
+    );
+    await tester.pump();
+    await tester.tap(find.byKey(const Key('auth-password')));
+    await tester.pumpAndSettle();
+
+    _expectAboveKeyboard(tester, const Key('auth-password'), 300);
+    debugDefaultTargetPlatformOverride = null;
+  });
+}
+
+void _expectAboveKeyboard(WidgetTester tester, Key fieldKey, double inset) {
+  final screenHeight =
+      tester.view.physicalSize.height / tester.view.devicePixelRatio;
+  expect(
+    tester.getBottomLeft(find.byKey(fieldKey)).dy,
+    lessThanOrEqualTo(screenHeight - inset),
+  );
 }
 
 class _PendingAuthApi extends AuthApi {