fix(native/mail): duplicate add-button in empty state + intro hints in ConnectMailSheet

- mail.tsx: hide section-header "+" button when accounts.length === 0 — MailEmptyState's CTA is the sole add trigger; also replaces Pressable with TouchableOpacity
- MailEmptyState: Pressable → TouchableOpacity (no-Pressable rule)
- SheetFieldStack: add optional `intro?: ReactNode` prop rendered in a flexShrink:1 ScrollView above chips/active-input so it compresses gracefully when the keyboard is up
- ConnectMailSheet: move app-password guide + green AES block into `intro` prop so they're visible from the start, before the user types anything

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

apps/rebreak-native/app/(app)/mail.tsx

@@ -5,6 +5,7 @@ import {
   Pressable,
   ScrollView,
   Text,
+  TouchableOpacity,
   View,
 } from 'react-native';
 import { useBottomTabBarHeight } from 'react-native-bottom-tabs';
@@ -173,7 +174,8 @@ export default function MailScreen() {
           </View>
         )}
 
-        {/* Section header with prominent + button */}
+        {/* Section header with prominent + button — hidden in empty state (CTA lives there) */}
+        {accounts.length > 0 && (
           <View
             style={{
               flexDirection: 'row',
@@ -211,10 +213,11 @@ export default function MailScreen() {
               </Text>
             </View>
 
-          <Pressable
+            <TouchableOpacity
               onPress={handleAddPress}
               disabled={limitReached}
-            android_ripple={{ color: '#0066cc' }}
+              activeOpacity={limitReached ? 1 : 0.8}
+              accessibilityLabel={t('mail.add_account_a11y')}
               style={{
                 backgroundColor: limitReached ? colors.surfaceElevated : '#007AFF',
                 borderRadius: 12,
@@ -224,11 +227,6 @@ export default function MailScreen() {
                 shadowOpacity: limitReached ? 0 : 0.25,
                 shadowRadius: 8,
                 elevation: limitReached ? 0 : 4,
-            }}
-            accessibilityLabel={t('mail.add_account_a11y')}
-          >
-            <View
-              style={{
                 flexDirection: 'row',
                 alignItems: 'center',
                 paddingHorizontal: 14,
@@ -250,9 +248,9 @@ export default function MailScreen() {
               >
                 {t('mail.add_account')}
               </Text>
+            </TouchableOpacity>
           </View>
-          </Pressable>
+        )}
-        </View>
 
         {/* Account cards or empty */}
         {accounts.length === 0 ? (

apps/rebreak-native/components/SheetFieldStack.tsx

@@ -27,6 +27,13 @@ export type SheetField = {
 
 type Props = {
   fields: SheetField[];
+  /**
+   * Immer sichtbarer Bereich über Chips + aktivem Input — für Hinweise, die der User
+   * sehen soll BEVOR er tippt. Wird in einer eigenen ScrollView mit `flexShrink:1`
+   * gerendert, sodass er bei kleinem verfügbaren Platz (Tastatur offen) schrumpft,
+   * der Eingabebereich aber nie weggedrückt wird.
+   */
+  intro?: ReactNode;
   /** Rendert sich nach dem letzten Feld — sichtbar sobald alle Felder ausgefüllt sind. */
   children?: ReactNode;
   onComplete?: () => void;
@@ -41,7 +48,7 @@ type Props = {
  *
  * Wird als `children` von `<FormSheet>` benutzt.
  */
-export function SheetFieldStack({ fields, children, onComplete }: Props) {
+export function SheetFieldStack({ fields, intro, children, onComplete }: Props) {
   const colors = useColors();
   const [activeIndex, setActiveIndex] = useState(0);
   const [fieldErrors, setFieldErrors] = useState<Record<string, string>>({});
@@ -84,9 +91,23 @@ export function SheetFieldStack({ fields, children, onComplete }: Props) {
   const isLast = activeIndex === fields.length - 1;
 
   return (
+    <View style={{ flex: 1 }}>
+      {/* Intro: immer sichtbar, schrumpft bei wenig Platz (Tastatur offen) */}
+      {intro != null && (
+        <ScrollView
+          style={{ flexShrink: 1 }}
+          contentContainerStyle={{ padding: 16, paddingBottom: 0 }}
+          keyboardShouldPersistTaps="handled"
+          showsVerticalScrollIndicator={false}
+        >
+          {intro}
+        </ScrollView>
+      )}
+
+      {/* Chips + aktives Feld + Post-Completion-Inhalt */}
       <ScrollView
         style={{ flex: 1 }}
-      contentContainerStyle={{ padding: 16, gap: 10 }}
+        contentContainerStyle={{ padding: 16, paddingTop: intro != null ? 10 : 16, gap: 10 }}
         keyboardShouldPersistTaps="handled"
         showsVerticalScrollIndicator={false}
       >
@@ -221,5 +242,6 @@ export function SheetFieldStack({ fields, children, onComplete }: Props) {
         {/* Rest des Formulars — sichtbar wenn alle Felder durch */}
         {allDone && children}
       </ScrollView>
+    </View>
   );
 }

apps/rebreak-native/components/mail/ConnectMailSheet.tsx

@@ -189,9 +189,9 @@ export function ConnectMailSheet({ visible, onClose, onSuccess }: Props) {
               ),
             },
           ]}
-          onComplete={() => setFieldsComplete(true)}
+          intro={
-        >
+            <View style={{ gap: 10 }}>
-          {/* App-Password-Guide — über den Datenschutz-Hinweis */}
+              {/* App-Password-Guide — provider-spezifisch, nicht für 'other' */}
               {selectedProvider && selectedProvider.id !== 'other' && (
                 <View
                   style={{
@@ -202,7 +202,6 @@ export function ConnectMailSheet({ visible, onClose, onSuccess }: Props) {
                     borderRadius: 12,
                     borderWidth: 1,
                     borderColor: '#bfdbfe',
-                marginBottom: 10,
                   }}
                 >
                   <Ionicons
@@ -248,7 +247,7 @@ export function ConnectMailSheet({ visible, onClose, onSuccess }: Props) {
                 </View>
               )}
 
-          {/* Datenschutz-Hinweis */}
+              {/* Datenschutz-Zusicherung — immer sichtbar */}
               <View
                 style={{
                   flexDirection: 'row',
@@ -258,7 +257,6 @@ export function ConnectMailSheet({ visible, onClose, onSuccess }: Props) {
                   borderRadius: 12,
                   borderWidth: 1,
                   borderColor: '#bbf7d0',
-              marginBottom: 10,
                 }}
               >
                 <Ionicons name="shield-checkmark" size={16} color="#16a34a" style={{ marginTop: 1 }} />
@@ -274,7 +272,10 @@ export function ConnectMailSheet({ visible, onClose, onSuccess }: Props) {
                   {t('mail.form_privacy_note')}
                 </Text>
               </View>
-
+            </View>
+          }
+          onComplete={() => setFieldsComplete(true)}
+        >
           {/* Fehler */}
           {(formError ?? (connectError ? t(humanizeMailError(connectError)) : null)) && (
             <Text

apps/rebreak-native/components/mail/MailEmptyState.tsx

@@ -1,4 +1,4 @@
-import { Pressable, Text, View } from 'react-native';
+import { Text, TouchableOpacity, View } from 'react-native';
 import { Ionicons } from '@expo/vector-icons';
 import { useTranslation } from 'react-i18next';
 import { useColors } from '../../lib/theme';
@@ -81,12 +81,10 @@ export function MailEmptyState({ onConnectPress }: Props) {
       </View>
 
       {/* CTA */}
-      <Pressable
+      <TouchableOpacity
         onPress={onConnectPress}
-        style={({ pressed }) => ({
+        activeOpacity={0.85}
-          opacity: pressed ? 0.85 : 1,
+        style={{ alignSelf: 'stretch' }}
-          alignSelf: 'stretch',
-        })}
       >
         <View style={{
           backgroundColor: '#007AFF',
@@ -99,7 +97,7 @@ export function MailEmptyState({ onConnectPress }: Props) {
             {t('mail.empty_state_cta')}
           </Text>
         </View>
-      </Pressable>
+      </TouchableOpacity>
     </View>
   );
 }