debug: add diagnostic output to ScaffoldingSpec

Temporary commit to capture runCommand task output on CI.

Assisted-by: Claude Code <Claude@Claude.ai>

Author: jamesfredley

grails-forge/test-core/src/test/groovy/org/grails/forge/features/scaffolding/ScaffoldingSpec.groovy

@@ -38,7 +38,15 @@ class ScaffoldingSpec extends CommandSpec {
                String name
            }
         '''
-        String output = executeGradle('runCommand', '-Pargs=generate-controller example.grails.Bird').output
+        def result = executeGradle('runCommand', '-Pargs=generate-controller example.grails.Bird')
+        String output = result.output
+        System.err.println("=== SCAFFOLDING DEBUG: runCommand output ===")
+        System.err.println(output)
+        System.err.println("=== SCAFFOLDING DEBUG: tasks executed ===")
+        result.tasks.each { System.err.println("  ${it.path} -> ${it.outcome}") }
+        System.err.println("=== SCAFFOLDING DEBUG: dir contents ===")
+        new File(dir, 'grails-app/controllers').with { if (it.exists()) it.eachFileRecurse { f -> System.err.println("  ${f}") } }
+        System.err.println("=== END DEBUG ===")
 
         then: 'generated files exist'
         new File(dir, 'grails-app/controllers/example/grails/BirdController.groovy').exists()