diff --git a/.agents/AGENTS.md b/.agents/AGENTS.md
new file mode 100644
index 00000000..c6baf4db
--- /dev/null
+++ b/.agents/AGENTS.md
@@ -0,0 +1,6 @@
+# Versioning & Build Rules Addendum
+
+## Build Configuration
+- The app MUST ALWAYS be signed with `schnappix-upload-key.keystore`. This is handled automatically by the custom Expo plugin `withAndroidSigning.js`. Do not modify or remove this plugin.
+- The `schnappix-upload-key.keystore` file is checked into the Git repository. Do NOT delete it, ignore it in git, or change its password (`#O0he7k00O0he7k00!`).
+- The Expo Media Library plugin injects `READ_MEDIA_IMAGES` and `READ_MEDIA_VIDEO` permissions into the Android manifest by default. These are rejected by Google Play for this specific app. To prevent this, the `withRemoveMediaPermissions.js` plugin MUST ALWAYS be included in `app.json`. This plugin forcibly strips these permissions using Android's `tools:node="remove"` directive during compilation. Do not remove this plugin.
diff --git a/src/screens/CameraScreen.tsx b/src/screens/CameraScreen.tsx
index f7582439..1b0364b1 100644
--- a/src/screens/CameraScreen.tsx
+++ b/src/screens/CameraScreen.tsx
@@ -9,6 +9,7 @@ import {
   TextInput,
   TouchableWithoutFeedback,
   PermissionsAndroid,
+  useWindowDimensions,
 } from 'react-native';
 import { CameraView, useCameraPermissions } from 'expo-camera';
 import * as FileSystem from 'expo-file-system/legacy';
@@ -110,6 +111,9 @@ export default function CameraScreen({
   const completionTimerRef = useRef<any>(null);
   const isCancelledRef = useRef<boolean>(false);
 
+  const { width } = useWindowDimensions();
+  const iconSize = width < 768 ? 18 : 32;
+
   // Reanimated countdown pulse animation
   const scale = useSharedValue(1);
 
@@ -538,9 +542,7 @@ export default function CameraScreen({
               >
                 {footerText === 'Display tippen! • Lächeln! • Foto schnappen!' ? (
                   <Text>
-                    <FontAwesomeIcon icon={faHandPointer} color={THEME.colors.text} size={32} />ㅤDisplay tippen!ㅤ•ㅤ
-                    <FontAwesomeIcon icon={faFaceSmile} color={THEME.colors.text} size={32} />ㅤLächeln!ㅤ•ㅤ
-                    <FontAwesomeIcon icon={faCamera} color={THEME.colors.text} size={32} />ㅤFoto schnappen!
+                    <FontAwesomeIcon icon={faHandPointer} color={THEME.colors.text} size={iconSize} /> Display tippen! • <FontAwesomeIcon icon={faFaceSmile} color={THEME.colors.text} size={iconSize} /> Lächeln! • <FontAwesomeIcon icon={faCamera} color={THEME.colors.text} size={iconSize} /> Foto schnappen!
                   </Text>
                 ) : (
                   footerText
@@ -559,6 +561,9 @@ export default function CameraScreen({
                 <View style={styles.modalContent}>
                   <Text style={styles.modalTitle}>Admin-Zugang</Text>
                   <Text style={styles.modalSub}>Passwort eingeben, um Einstellungen zu öffnen</Text>
+                  <Text style={[styles.modalSub, { color: THEME.colors.error, marginTop: 10, fontSize: 14, fontStyle: 'italic' }]}>
+                    Tipp: Standardcode ist 1234. Bitte ändern! Ein Zurücksetzen ist nur durch Neuinstallation der App möglich.
+                  </Text>
 
                   <TextInput
                     style={styles.input}
diff --git a/src/screens/PreviewScreen.tsx b/src/screens/PreviewScreen.tsx
index db78b143..13be1db5 100644
--- a/src/screens/PreviewScreen.tsx
+++ b/src/screens/PreviewScreen.tsx
@@ -63,6 +63,7 @@ export default function PreviewScreen({
   
   const { width, height } = useWindowDimensions();
   const isPortrait = height > width;
+  const isSmallDevice = width < 768;
 
   const [activeUris, setActiveUris] = useState<string[]>([]);
 
@@ -117,6 +118,7 @@ export default function PreviewScreen({
     };
   }, []);
   const [showStickerTray, setShowStickerTray] = useState<boolean>(false);
+  const [showFrameTray, setShowFrameTray] = useState<boolean>(false);
 
   React.useEffect(() => {
     logger.log(`PreviewScreen mounted with ${photoUris.length} photos.`);
@@ -537,10 +539,10 @@ export default function PreviewScreen({
 
       {/* Right panel: Controls */}
       <ScrollView 
-        style={[styles.controlPanel, { flex: isPortrait ? 1 : 0.8 }]}
+        style={[styles.controlPanel, { flex: isPortrait ? 1 : 0.8, padding: isSmallDevice ? THEME.spacing.md : THEME.spacing.xl }]}
         contentContainerStyle={{ flexGrow: 1, justifyContent: 'center' }}
       >
-        <Text style={styles.header}>{eventText}</Text>
+        <Text style={[styles.header, isSmallDevice && { fontSize: 18, marginBottom: THEME.spacing.sm }]}>{eventText}</Text>
         
         {/* Thumbnail Reel for Photo Selection */}
         {photoUris.length > 1 && (
@@ -581,8 +583,12 @@ export default function PreviewScreen({
         {/* Editing Tools Row */}
         <View style={styles.editToolsRow}>
           <TouchableOpacity 
-            style={[styles.editToolBtn, showStickerTray && styles.editToolBtnActive]}
-            onPress={() => { logger.log(`Action: Toggled sticker tray ${!showStickerTray}`); setShowStickerTray(!showStickerTray); }}
+            style={[styles.editToolBtn, isSmallDevice && { paddingVertical: 8, paddingHorizontal: 12 }, showStickerTray && styles.editToolBtnActive]}
+            onPress={() => { 
+              logger.log(`Action: Toggled sticker tray ${!showStickerTray}`); 
+              setShowStickerTray(!showStickerTray); 
+              if (!showStickerTray) setShowFrameTray(false);
+            }}
           >
             <FontAwesomeIcon
               icon={faFaceGrinStars}
@@ -596,23 +602,19 @@ export default function PreviewScreen({
 
           {frameMode === 'available' && (
             <TouchableOpacity
-              style={[styles.editToolBtn, selectedFrameId !== null && styles.editToolBtnActive]}
+              style={[styles.editToolBtn, isSmallDevice && { paddingVertical: 8, paddingHorizontal: 12 }, showFrameTray && styles.editToolBtnActive]}
               onPress={() => {
-                if (selectedFrameId !== null) {
-                  logger.log('Action: Removed frame');
-                  setSelectedFrameId(null);
-                } else {
-                  logger.log('Action: Toggled frame selection');
-                }
-                // FramePicker is shown below
+                logger.log(`Action: Toggled frame tray ${!showFrameTray}`);
+                setShowFrameTray(!showFrameTray);
+                if (!showFrameTray) setShowStickerTray(false);
               }}
             >
               <FontAwesomeIcon
                 icon={faBorderAll}
                 size={22}
-                color={selectedFrameId !== null ? THEME.colors.text : THEME.colors.accent}
+                color={showFrameTray ? THEME.colors.text : THEME.colors.accent}
               />
-              <Text style={[styles.editToolText, selectedFrameId !== null && styles.editToolTextActive]}>
+              <Text style={[styles.editToolText, showFrameTray && styles.editToolTextActive]}>
                 Rahmen
               </Text>
             </TouchableOpacity>
@@ -620,7 +622,7 @@ export default function PreviewScreen({
         </View>
 
         {/* Frame Picker (when mode = available) */}
-        {frameMode === 'available' && (
+        {frameMode === 'available' && showFrameTray && (
           <FramePicker
             selectedFrameId={selectedFrameId}
             onSelectFrame={(id) => {
@@ -633,12 +635,12 @@ export default function PreviewScreen({
 
         {/* Action Buttons */}
         <View style={styles.actions}>
-          <TouchableOpacity style={[styles.actionBtn, styles.printBtn, isProcessing && styles.btnDisabled]} onPress={handlePrint} activeOpacity={0.8} disabled={isProcessing}>
+          <TouchableOpacity style={[styles.actionBtn, styles.printBtn, isProcessing && styles.btnDisabled, isSmallDevice && { marginBottom: THEME.spacing.sm }]} onPress={handlePrint} activeOpacity={0.8} disabled={isProcessing}>
             <LinearGradient
               colors={THEME.gradient.primary}
               start={{ x: 0, y: 0.5 }}
               end={{ x: 1, y: 0.5 }}
-              style={styles.printGradient}
+              style={[styles.printGradient, isSmallDevice && { paddingVertical: THEME.spacing.sm }]}
             >
               <FontAwesomeIcon icon={faPrint} size={18} color={THEME.colors.text} style={{ marginRight: 8 }} />
               <Text style={styles.actionBtnText}>JETZT DRUCKEN</Text>
@@ -648,7 +650,7 @@ export default function PreviewScreen({
 
 
           {photoUris.length < 4 && (
-            <TouchableOpacity style={[styles.actionBtn, styles.addBtn, isProcessing && styles.btnDisabled]} onPress={onAddAnother} disabled={isProcessing}>
+            <TouchableOpacity style={[styles.actionBtn, styles.addBtn, isProcessing && styles.btnDisabled, isSmallDevice && { paddingVertical: THEME.spacing.sm, marginBottom: THEME.spacing.sm }]} onPress={onAddAnother} disabled={isProcessing}>
               <FontAwesomeIcon icon={faPlus} size={16} color={THEME.colors.text} style={{ marginRight: 8 }} />
               <Text style={styles.actionBtnText}>Weiteres Foto aufnehmen</Text>
             </TouchableOpacity>