ci: keep the raw xcodebuild log from the macOS test app build

When a script phase fails, xcbeautify prints the failure summary but not
the phase's own output, and its stdout is block-buffered through the pipe,
so the tail of the build never reaches the job log either. A failing
archive then leaves nothing to diagnose. Tee the raw xcodebuild output to
a file and upload it as an artifact when the job fails.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: kraenhansen

.github/workflows/check.yml

@@ -222,9 +222,19 @@ jobs:
         run: npx react-native bundle --entry-file index.js --platform macos --dev false --minify false --bundle-output dist/main.macos.jsbundle --assets-dest dist/res
         working-directory: apps/macos-test-app
       - name: Build test app
-        # pipefail so an xcodebuild failure is not masked by xcbeautify's exit code
-        run: set -o pipefail && xcodebuild archive -workspace MacOSTestApp.xcworkspace -configuration Release -scheme MacOSTestApp-macOS -destination generic/platform="macOS" -archivePath ./build/macos-test-app.xcarchive | xcbeautify
+        # pipefail so an xcodebuild failure is not masked by xcbeautify's exit code.
+        # tee keeps the raw log: xcbeautify hides the output of failing script
+        # phases (and its stdout is block-buffered through the pipe, so the tail
+        # of the build gets lost when the job fails), which leaves a script phase
+        # failure with nothing to diagnose.
+        run: set -o pipefail && xcodebuild archive -workspace MacOSTestApp.xcworkspace -configuration Release -scheme MacOSTestApp-macOS -destination generic/platform="macOS" -archivePath ./build/macos-test-app.xcarchive | tee xcodebuild.log | xcbeautify
         working-directory: apps/macos-test-app/macos
+      - name: Upload xcodebuild log
+        if: failure()
+        uses: actions/upload-artifact@v4
+        with:
+          name: macos-xcodebuild-log
+          path: apps/macos-test-app/macos/xcodebuild.log
       - name: Run test app
         run: npx mocha-remote --exit-on-error -- macos/build/macos-test-app.xcarchive/Products/Applications/MacOSTestApp.app/Contents/MacOS/MacOSTestApp
         working-directory: apps/macos-test-app