scaffold: kind+Tilt cluster, api/ui/docs stubs, green at nvi.local.ar

ctrl/k8s/base/Caddyfile

@@ -0,0 +1,22 @@
+{
+    auto_https off
+    admin off
+}
+
+# Routes by Host header from the system Caddy (which proxies *.nvi.local.ar
+# from the host to this gateway via the kind NodePort).
+
+nvi.local.ar:80 {
+    reverse_proxy ui:80
+}
+
+api.nvi.local.ar:80 {
+    reverse_proxy api:8000
+}
+
+docs.nvi.local.ar:80 {
+    reverse_proxy docs:80
+}
+
+# AWS public hostname later — VPS Caddy will reverse-proxy nivii.mcrn.ar
+# over WireGuard to this gateway. Add matching blocks when that's wired up.