update android build, fix ios build for new version of MLKit BarcodeScanner (both build)

scripts/build-ios.sh

@@ -222,8 +222,9 @@ build_ios_app() {
     
     if [ "$BUILD_TYPE" = "debug" ]; then
         build_config="Debug"
-        # Any Simulator — avoids hardcoding a device name (e.g. iPhone 15 Pro) that may not exist in newer Xcode runtimes
-        destination="generic/platform=iOS Simulator"
+        # Use device SDK — prebuilt MLKit frameworks (MLImage, MLKitBarcodeScanning) ship
+        # iOS device slices only and cannot link against the iOS Simulator SDK.
+        destination="generic/platform=iOS"
     else
         build_config="Release"
         destination="platform=iOS,id=auto"
@@ -233,10 +234,16 @@ build_ios_app() {
     
     cd ios/App
     
+    # Prevent pkgx-managed libs (e.g. zlib) from leaking into the iOS SDK linker.
+    unset LIBRARY_PATH
+    unset DYLD_LIBRARY_PATH
+    unset DYLD_FALLBACK_LIBRARY_PATH
+
     # Build the app:
     # -quiet: skip the huge export VAR dump (compiler warnings still show unless suppressed below).
     # SWIFT_SUPPRESS_WARNINGS / GCC_WARN_INHIBIT_ALL_WARNINGS: quiet CLI output from Pods + plugins;
     #   build in Xcode for full diagnostics. Real errors still fail the build.
+    local build_exit=0
     xcodebuild -quiet \
                -workspace App.xcworkspace \
                -scheme "$scheme" \
@@ -247,10 +254,14 @@ build_ios_app() {
                CODE_SIGNING_REQUIRED=NO \
                CODE_SIGNING_ALLOWED=NO \
                SWIFT_SUPPRESS_WARNINGS=YES \
-               GCC_WARN_INHIBIT_ALL_WARNINGS=YES
-    
+               GCC_WARN_INHIBIT_ALL_WARNINGS=YES || build_exit=$?
+
     cd ../..
-    
+
+    if [ $build_exit -ne 0 ]; then
+        return $build_exit
+    fi
+
     log_success "iOS app built successfully"
 }