Hello from Kamal

If you can see this page, the pipeline works:

1. Built locally on the laptop
2. Pushed to gitea.mvp-labs.com/brm5017/hello-kamal
3. Pulled by the Incus container kamal-test on the VPS
4. Served via kamal-proxy behind the Incus port-forward (host:8888 → container:80)

Pipeline validation: ✅