feat(rebreak-native): KeyboardAwareScreen composable + full-screen form migration (phase 3A)

New component/KeyboardAwareScreen.tsx encapsulates the standard
KeyboardAvoidingView pattern for full-screen forms:
- iOS behavior="padding", Android no-op (adjustResize covers it)
- scrollable prop: ScrollView with keyboardShouldPersistTaps="handled"
- non-scrollable: TouchableWithoutFeedback+View for tap-to-dismiss
- headerOffset prop for screens owning their own header padding

Migrated to KeyboardAwareScreen: signin, signup, forgot-password,
confirm-otp (SafeAreaView-wrapped, no headerOffset needed) and
profile/edit (KAV wrapper only, explicit ScrollView retained).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/rebreak-native/app/(auth)/confirm-otp.tsx

@@ -4,14 +4,13 @@ import {
   Text,
   TextInput,
   TouchableOpacity,
-  KeyboardAvoidingView,
-  Platform,
   ActivityIndicator,
 } from 'react-native';
 import { useRouter, useLocalSearchParams } from 'expo-router';
 import { SafeAreaView } from 'react-native-safe-area-context';
 import { useTranslation } from 'react-i18next';
 import { useAuthStore } from '../../stores/auth';
+import { KeyboardAwareScreen } from '../../components/KeyboardAwareScreen';
 
 const OTP_LENGTH = 6;
 
@@ -111,11 +110,7 @@ export default function ConfirmOtpScreen() {
 
   return (
     <SafeAreaView className="flex-1 bg-white">
-      <KeyboardAvoidingView
-        behavior={Platform.OS === 'ios' ? 'padding' : undefined}
-        className="flex-1"
-      >
-        <View className="flex-1 px-6 justify-center">
+      <KeyboardAwareScreen contentContainerStyle={{ paddingHorizontal: 24, justifyContent: 'center' }}>
           {/* Header */}
           <View className="items-center mb-8">
             <View className="w-16 h-16 bg-rebreak-500/10 rounded-full items-center justify-center mb-4">
@@ -203,8 +198,7 @@ export default function ConfirmOtpScreen() {
           >
             <Text className="text-neutral-400 text-sm" style={{ fontFamily: 'Nunito_400Regular' }}>{t('auth.backToSignup')}</Text>
           </TouchableOpacity>
-        </View>
-      </KeyboardAvoidingView>
+      </KeyboardAwareScreen>
     </SafeAreaView>
   );
 }

apps/rebreak-native/app/(auth)/forgot-password.tsx

@@ -4,14 +4,13 @@ import {
   Text,
   TextInput,
   TouchableOpacity,
-  KeyboardAvoidingView,
-  Platform,
   ActivityIndicator,
 } from 'react-native';
 import { useRouter } from 'expo-router';
 import { SafeAreaView } from 'react-native-safe-area-context';
 import { useTranslation } from 'react-i18next';
 import { useAuthStore } from '../../stores/auth';
+import { KeyboardAwareScreen } from '../../components/KeyboardAwareScreen';
 
 const INPUT_STYLE = {
   fontSize: 16,
@@ -47,11 +46,7 @@ export default function ForgotPasswordScreen() {
 
   return (
     <SafeAreaView className="flex-1 bg-white">
-      <KeyboardAvoidingView
-        behavior={Platform.OS === 'ios' ? 'padding' : undefined}
-        className="flex-1"
-      >
-        <View className="flex-1 px-6 justify-center">
+      <KeyboardAwareScreen contentContainerStyle={{ paddingHorizontal: 24, justifyContent: 'center' }}>
           <Text className="text-3xl text-neutral-900 mb-2" style={{ fontFamily: 'Nunito_700Bold' }}>{t('auth.resetPasswordTitle')}</Text>
           <Text className="text-base text-neutral-500 mb-8 leading-6" style={{ fontFamily: 'Nunito_400Regular' }}>
             {t('auth.resetPasswordSubtitle')}
@@ -108,8 +103,7 @@ export default function ForgotPasswordScreen() {
           >
             <Text className="text-neutral-500 text-sm" style={{ fontFamily: 'Nunito_400Regular' }}>{t('auth.backToLogin')}</Text>
           </TouchableOpacity>
-        </View>
-      </KeyboardAvoidingView>
+      </KeyboardAwareScreen>
     </SafeAreaView>
   );
 }

apps/rebreak-native/app/(auth)/signin.tsx

@@ -4,9 +4,6 @@ import {
   Text,
   TextInput,
   TouchableOpacity,
-  KeyboardAvoidingView,
-  Platform,
-  ScrollView,
   ActivityIndicator,
 } from 'react-native';
 import { useRouter } from 'expo-router';
@@ -14,6 +11,7 @@ import { SafeAreaView } from 'react-native-safe-area-context';
 import Svg, { Path } from 'react-native-svg';
 import { useTranslation } from 'react-i18next';
 import { useAuthStore } from '../../stores/auth';
+import { KeyboardAwareScreen } from '../../components/KeyboardAwareScreen';
 
 function GoogleIcon() {
   return (
@@ -85,14 +83,9 @@ export default function SignInScreen() {
 
   return (
     <SafeAreaView className="flex-1 bg-white">
-      <KeyboardAvoidingView
-        behavior={Platform.OS === 'ios' ? 'padding' : undefined}
-        className="flex-1"
-      >
-        <ScrollView
-          contentContainerStyle={{ flexGrow: 1, justifyContent: 'center' }}
-          keyboardShouldPersistTaps="handled"
-          className="px-6"
+      <KeyboardAwareScreen
+        scrollable
+        contentContainerStyle={{ flexGrow: 1, justifyContent: 'center', paddingHorizontal: 24 }}
       >
           <Text className="text-3xl text-neutral-900 mb-2" style={{ fontFamily: 'Nunito_700Bold' }}>{t('auth.welcomeBack')}</Text>
           <Text className="text-base text-neutral-500 mb-8" style={{ fontFamily: 'Nunito_400Regular' }}>
@@ -197,8 +190,7 @@ export default function SignInScreen() {
               <Text className="text-rebreak-500" style={{ fontFamily: 'Nunito_600SemiBold' }}>{t('auth.signup')}</Text>
             </Text>
           </TouchableOpacity>
-        </ScrollView>
-      </KeyboardAvoidingView>
+      </KeyboardAwareScreen>
     </SafeAreaView>
   );
 }

apps/rebreak-native/app/(auth)/signup.tsx

@@ -4,9 +4,6 @@ import {
   Text,
   TextInput,
   TouchableOpacity,
-  KeyboardAvoidingView,
-  Platform,
-  ScrollView,
   Image,
   ActivityIndicator,
 } from 'react-native';
@@ -16,6 +13,7 @@ import Svg, { Path } from 'react-native-svg';
 import { useTranslation } from 'react-i18next';
 import { useAuthStore } from '../../stores/auth';
 import { HERO_AVATARS, getAvatarUrl } from '../../lib/avatars';
+import { KeyboardAwareScreen } from '../../components/KeyboardAwareScreen';
 
 function GoogleIcon() {
   return (
@@ -109,14 +107,9 @@ export default function SignUpScreen() {
 
   return (
     <SafeAreaView className="flex-1 bg-white">
-      <KeyboardAvoidingView
-        behavior={Platform.OS === 'ios' ? 'padding' : undefined}
-        className="flex-1"
-      >
-        <ScrollView
-          contentContainerStyle={{ flexGrow: 1, paddingBottom: 32 }}
-          keyboardShouldPersistTaps="handled"
-          className="px-6 pt-8"
+      <KeyboardAwareScreen
+        scrollable
+        contentContainerStyle={{ flexGrow: 1, paddingBottom: 32, paddingHorizontal: 24, paddingTop: 32 }}
       >
           <Text className="text-3xl text-neutral-900 mb-1" style={{ fontFamily: 'Nunito_700Bold' }}>{t('auth.signupTitle')}</Text>
           <Text className="text-base text-neutral-500 mb-8" style={{ fontFamily: 'Nunito_400Regular' }}>
@@ -300,8 +293,7 @@ export default function SignUpScreen() {
               <Text className="text-rebreak-500" style={{ fontFamily: 'Nunito_600SemiBold' }}>{t('auth.signin')}</Text>
             </Text>
           </TouchableOpacity>
-        </ScrollView>
-      </KeyboardAvoidingView>
+      </KeyboardAwareScreen>
     </SafeAreaView>
   );
 }

apps/rebreak-native/app/profile/edit.tsx

@@ -7,8 +7,6 @@ import {
   ScrollView,
   Image,
   ActivityIndicator,
-  KeyboardAvoidingView,
-  Platform,
   Alert,
 } from 'react-native';
 import { useRouter } from 'expo-router';
@@ -24,6 +22,7 @@ import { resolveAvatar } from '../../lib/resolveAvatar';
 import { apiFetch } from '../../lib/api';
 import { useMe } from '../../hooks/useMe';
 import { AvatarCropSheet } from '../../components/profile/AvatarCropSheet';
+import { KeyboardAwareScreen } from '../../components/KeyboardAwareScreen';
 
 export default function ProfileEditScreen() {
   const router = useRouter();
@@ -133,10 +132,7 @@ export default function ProfileEditScreen() {
     avatarId !== me?.avatar;
 
   return (
-    <KeyboardAvoidingView
-      style={{ flex: 1, backgroundColor: colors.bg }}
-      behavior={Platform.OS === 'ios' ? 'padding' : undefined}
-    >
+    <KeyboardAwareScreen style={{ backgroundColor: colors.bg }}>
       <View
         style={{
           flexDirection: 'row',
@@ -322,6 +318,6 @@ export default function ProfileEditScreen() {
         onConfirm={handleCropConfirm}
         onCancel={handleCropCancel}
       />
-    </KeyboardAvoidingView>
+    </KeyboardAwareScreen>
   );
 }

apps/rebreak-native/components/KeyboardAwareScreen.tsx

@@ -0,0 +1,65 @@
+import { ReactNode } from 'react';
+import {
+  Keyboard,
+  KeyboardAvoidingView,
+  Platform,
+  ScrollView,
+  StyleProp,
+  TouchableWithoutFeedback,
+  View,
+  ViewStyle,
+} from 'react-native';
+
+export interface KeyboardAwareScreenProps {
+  children: ReactNode;
+  /**
+   * Extra offset for `keyboardVerticalOffset` on iOS. For screens wrapped in
+   * `<SafeAreaView>` this should be 0 (default) — the SafeAreaView already
+   * absorbs the top inset. For screens that own their header with
+   * `paddingTop: insets.top` baked in (e.g. profile/edit), pass the full
+   * header height so iOS computes the correct push distance.
+   */
+  headerOffset?: number;
+  /**
+   * When true, wraps children in a `ScrollView`. Use for long forms (sign-up,
+   * profile-edit). When false (default), a plain `View` fills the remaining
+   * space — tap anywhere outside an input dismisses the keyboard.
+   */
+  scrollable?: boolean;
+  /** Style applied to the outer KeyboardAvoidingView. */
+  style?: StyleProp<ViewStyle>;
+  /** Style applied to the inner container (ScrollView or View). */
+  contentContainerStyle?: StyleProp<ViewStyle>;
+}
+
+export function KeyboardAwareScreen({
+  children,
+  headerOffset = 0,
+  scrollable = false,
+  style,
+  contentContainerStyle,
+}: KeyboardAwareScreenProps) {
+  return (
+    <KeyboardAvoidingView
+      style={[{ flex: 1 }, style]}
+      behavior={Platform.OS === 'ios' ? 'padding' : undefined}
+      keyboardVerticalOffset={headerOffset}
+    >
+      {scrollable ? (
+        <ScrollView
+          style={{ flex: 1 }}
+          contentContainerStyle={contentContainerStyle}
+          keyboardShouldPersistTaps="handled"
+          keyboardDismissMode={Platform.OS === 'ios' ? 'interactive' : 'on-drag'}
+          showsVerticalScrollIndicator={false}
+        >
+          {children}
+        </ScrollView>
+      ) : (
+        <TouchableWithoutFeedback onPress={Keyboard.dismiss} accessible={false}>
+          <View style={[{ flex: 1 }, contentContainerStyle]}>{children}</View>
+        </TouchableWithoutFeedback>
+      )}
+    </KeyboardAvoidingView>
+  );
+}