Initial commit: GitOps Starter Pack

A teaching-first, single-cluster GitOps setup: Talos Linux + Argo CD with
an app-of-apps layout, MetalLB pre-installed for real LoadBalancer IPs on
bare metal, a demo app, and a progressive docs/ walkthrough with a
CLAUDE.md tutor persona and guided bootstrap checklist.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,10 @@
+# Generated by talosctl gen config — contains private keys and client
+# certificates. Never commit these.
+_out/
+talosconfig
+
+# Downloaded by talosctl kubeconfig — grants full cluster access.
+kubeconfig
+
+# OS cruft
+.DS_Store