fix(ui): keyboard-first-tap, Teilen-Button bigger, Header-Icon hitSlop

(app)/index.tsx:
- FlatList keyboardShouldPersistTaps="handled" — Bild-Icon im ComposeCard
  reagiert ab erstem Tap auch wenn Tastatur offen. Vorher dismisste der
  Tap nur die Tastatur (RN-Default "never").

ComposeCard.tsx Teilen-Button:
- height 44→52, px-5→px-6, paper-plane-outline-Icon size 18 + text-base
  Nunito_700Bold. Standard-iOS-Filled-Primary-Button-Style.

AppHeader.tsx Bell + Avatar:
- hitSlop 4pt allseitig auf beiden Pressables — effective tap-area
  36→44pt ohne Layout-Verschiebung
- Bell-Icon size 18→22 (konsistent mit Avatar-36pt-Kreis)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

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

@@ -87,6 +87,7 @@ export default function HomeScreen() {
         keyExtractor={keyExtractor}
         contentContainerStyle={{ paddingHorizontal: 16, paddingTop: 12, paddingBottom: 32 }}
         showsVerticalScrollIndicator={false}
+        keyboardShouldPersistTaps="handled"
         // Performance tuning — measured on Galaxy A50 (older mid-range):
         // VirtualizedList warned with dt=2.26s for ~7k content. These props
         // shrink the per-batch render cost and reclaim off-screen views.

apps/rebreak-native/components/AppHeader.tsx

@@ -71,10 +71,11 @@ export function AppHeader({ notifCount, showBack, title }: Props = {}) {
         <View className="flex-row items-center gap-1">
           <Pressable
             onPress={() => setNotifOpen(true)}
+            hitSlop={{ top: 4, bottom: 4, left: 4, right: 4 }}
             className="w-9 h-9 rounded-full bg-white items-center justify-center"
             style={({ pressed }) => ({ opacity: pressed ? 0.7 : 1 })}
           >
-            <Ionicons name="notifications-outline" size={18} color="#737373" />
+            <Ionicons name="notifications-outline" size={22} color="#737373" />
             {badge > 0 && (
               <View className="absolute top-0 right-0 w-4 h-4 rounded-full bg-rebreak-500 items-center justify-center">
                 <Text className="text-white text-[9px]" style={{ fontFamily: 'Nunito_700Bold' }}>
@@ -87,6 +88,7 @@ export function AppHeader({ notifCount, showBack, title }: Props = {}) {
           {/* Avatar = Trigger für Dropdown-Menu (kein separates 3-Punkte-Icon) */}
           <Pressable
             onPress={() => setMenuOpen(true)}
+            hitSlop={{ top: 4, bottom: 4, left: 4, right: 4 }}
             className={`w-9 h-9 rounded-full items-center justify-center overflow-hidden ${showAvatarImage ? 'bg-neutral-100' : 'bg-rebreak-500'}`}
             style={({ pressed }) => ({ opacity: pressed ? 0.7 : 1 })}
           >

apps/rebreak-native/components/ComposeCard.tsx

@@ -163,16 +163,19 @@ export function ComposeCard({ onPosted }: Props) {
             <Pressable
               onPress={submit}
               disabled={!content.trim() || posting}
-              className="px-5 rounded-full bg-rebreak-500 items-center justify-center flex-row gap-1.5"
+              className="px-6 rounded-full bg-rebreak-500 items-center justify-center flex-row gap-2"
               style={({ pressed }) => ({
-                height: 44,
+                height: 52,
                 opacity: pressed || !content.trim() || posting ? 0.5 : 1,
               })}
             >
               {posting ? (
                 <ActivityIndicator size="small" color="#fff" />
               ) : (
-                <Text className="text-white text-sm" style={{ fontFamily: 'Nunito_600SemiBold' }}>{t('community.share')}</Text>
+                <>
+                  <Ionicons name="paper-plane-outline" size={18} color="#fff" />
+                  <Text className="text-white text-base" style={{ fontFamily: 'Nunito_700Bold' }}>{t('community.share')}</Text>
+                </>
               )}
             </Pressable>
           </View>