Fix KurdMediaScreen: use GradientHeader, remove manual header

mobile/src/navigation/HomeStackNavigator.tsx

@@ -95,7 +95,14 @@ const HomeStackNavigator: React.FC = () => {
         }}
       />
       <Stack.Screen name="Forum" component={ForumScreen} options={{ headerTitle: 'Forum' }} />
-      <Stack.Screen name="KurdMedia" component={KurdMediaScreen} options={{ headerTitle: 'KurdMedia' }} />
+      <Stack.Screen
+        name="KurdMedia"
+        component={KurdMediaScreen}
+        options={{
+          headerTitle: 'KurdMedia',
+          header: (props) => <GradientHeader {...props} subtitle="Medyaya Kurdî & Piştgirî" gradientColors={[KurdistanColors.sor, '#C62828']} />
+        }}
+      />
       <Stack.Screen
         name="Perwerde"
         component={PerwerdeScreen}

mobile/src/screens/KurdMediaScreen.tsx

@@ -207,18 +207,6 @@ const KurdMediaScreen: React.FC = () => {
     <SafeAreaView style={styles.container}>
       <StatusBar barStyle="light-content" />
 
-      {/* Header */}
-      <LinearGradient
-        colors={[KurdistanColors.sor, '#C62828']}
-        start={{ x: 0, y: 0 }}
-        end={{ x: 1, y: 1 }}
-        style={styles.header}
-      >
-        <View style={styles.headerContent}>
-          <Text style={styles.headerTitle}>KurdMedia</Text>
-          <Text style={styles.headerSubtitle}>Medyaya Kurdî & Piştgirî</Text>
-        </View>
-      </LinearGradient>
 
       <ScrollView style={styles.content} showsVerticalScrollIndicator={false}>
         {/* Kurdish Media Section */}