fix: Add debugging output for AI validation in CI

- Print Python validation script output on failure
- Add verbose mode to show Claude CLI availability check
- Redirect stderr to stdout for better error capture

Author: markpollack

integration-testing/ai-validator/validate_example.py

@@ -341,6 +341,18 @@ def main():
     # Create validator and run validation
     try:
         validator = SpringAIExampleValidator()
+
+        # Debug: Check if Claude CLI is available
+        if args.verbose:
+            import subprocess
+            try:
+                which_result = subprocess.run(['which', 'claude'], capture_output=True, text=True)
+                print(f"DEBUG: which claude: {which_result.stdout.strip() or which_result.stderr.strip()}", file=sys.stderr)
+                version_result = subprocess.run(['claude', '--version'], capture_output=True, text=True, timeout=10)
+                print(f"DEBUG: claude version: {version_result.stdout.strip() or version_result.stderr.strip()}", file=sys.stderr)
+            except Exception as e:
+                print(f"DEBUG: Claude CLI check failed: {e}", file=sys.stderr)
+
         result = validator.validate_example(request)
 
         if args.output_format == "json":

integration-testing/jbang-lib/IntegrationTestUtils.java

@@ -168,11 +168,12 @@ public static boolean performAIValidation(String output, Path logFile, ExampleIn
         Path validatorScript = repoRoot.resolve("integration-testing/ai-validator/validate_example.py");
 
         String[] baseCmd = {
-            "python3", 
+            "python3",
             validatorScript.toString(),
             "--log-path", logFile.toAbsolutePath().toString(),
             "--example-name", moduleName,
-            "--output-format", "json"
+            "--output-format", "json",
+            "--verbose"  // Enable verbose output for debugging in CI
         };
 
         // Build dynamic command with optional parameters
@@ -208,14 +209,15 @@ public static boolean performAIValidation(String output, Path logFile, ExampleIn
                 .command(fullCmd)
                 .timeout(180, TimeUnit.SECONDS) // 3 minutes timeout for AI validation
                 .readOutput(true)
+                .redirectErrorStream(true) // Merge stderr into stdout for better error visibility
                 .execute();
-            
+
             String aiOutput = result.outputUTF8();
-            String aiError = ""; // Error capture not available with readOutput(true)
             int aiExitCode = result.getExitValue();
-            
+
             // Check exit code
             if (aiExitCode != 0) {
+                err.println("AI validation output: " + aiOutput);
                 throw new Exception("AI validation script failed with exit code: " + aiExitCode);
             }