add demo app

config.yaml

@@ -0,0 +1,16 @@
+# Read by devops-lib's loadConfig stage after checkout — merges into the
+# pipeline's config map, overriding whatever homelabPipeline(repo_name: ...)
+# passed in the Jenkinsfile. Everything here is optional; this file exists
+# mainly to prove the hooks mechanism actually runs, not because this app
+# needs to override any of the pipeline defaults.
+hooks:
+  pre_build:
+    - name: gofmt-check
+      script: scripts/pre-build-check.sh
+      # Advisory on purpose for this demo — a real repo would probably
+      # want this blocking (the default), but failing the one demo app
+      # over a formatting nit isn't the point here.
+      blocking: false
+  post_build:
+    - name: report-tag
+      script: scripts/post-build-notify.sh