fix: add JBang installation and proper exit codes

- Add JBang installation step to GitHub Actions workflow
- Fix run-integration-tests.sh to exit with code 1 on failures
- Ensure GitHub Actions properly reports test failures

Author: markpollack

.github/workflows/integration-tests-manual.yml

@@ -30,6 +30,14 @@ jobs:
         distribution: 'temurin'
         cache: maven
 
+    - name: Install JBang
+      run: |
+        echo "📦 Installing JBang..."
+        curl -Ls https://sh.jbang.dev | bash -s - app setup
+        echo "$HOME/.jbang/bin" >> $GITHUB_PATH
+        export PATH="$HOME/.jbang/bin:$PATH"
+        jbang version
+        
     - name: Update Spring AI version
       run: |
         echo "📦 Updating Spring AI version to: ${{ inputs.spring_ai_version }}"

integration-testing/scripts/run-integration-tests.sh

@@ -148,4 +148,12 @@ fi
 
 echo "" | tee -a "${LOG_FILE}"
 echo "📝 Full log: ${LOG_FILE}"
-echo "✅ Testing completed!"
+
+# Exit with proper code
+if [ ${failed} -gt 0 ]; then
+    echo "❌ Testing completed with failures!"
+    exit 1
+else
+    echo "✅ Testing completed!"
+    exit 0
+fi