Initial commit for Greenlens

app/auth/login.tsx

@@ -160,7 +160,7 @@ export default function LoginScreen() {
         {/* Sign Up Link */}
         <TouchableOpacity
           style={[styles.secondaryBtn, { borderColor: colors.borderStrong, backgroundColor: colors.surface }]}
-          onPress={() => router.push('/auth/signup')}
+          onPress={() => router.replace('/auth/signup')}
           activeOpacity={0.82}
         >
           <Text style={[styles.secondaryBtnText, { color: colors.text }]}>
@@ -186,9 +186,9 @@ const styles = StyleSheet.create({
     marginBottom: 32,
   },
   logoIcon: {
-    width: 88,
-    height: 88,
-    borderRadius: 20,
+    width: 56,
+    height: 56,
+    borderRadius: 14,
     marginBottom: 16,
   },
   appName: {