chore: initial infrastructure scaffold

Kustomize base + overlays for the full Sunbeam k3s stack:
- base/mesh      — Linkerd edge (crds + control-plane + viz)
- base/ingress   — custom Pingora edge proxy
- base/ory       — Kratos 0.60.1 + Hydra 0.60.1 + login-ui
- base/data      — CloudNativePG 0.27.1, Valkey 8, OpenSearch 2
- base/storage   — SeaweedFS master + volume + filer (S3 on :8333)
- base/lasuite   — Hive sync daemon + La Suite app placeholders
- base/media     — LiveKit livekit-server 1.9.0
- base/devtools  — Gitea 12.5.0 (external PG + Valkey)
overlays/local   — sslip.io domain, mkcert TLS, Lima hostPort
overlays/production — stub (TODOs for sunbeam.pt values)
scripts/         — local-up/down/certs/urls helpers
justfile         — up / down / certs / urls targets

overlays/local/values-domain.yaml

@@ -0,0 +1,21 @@
+# Patch: replace DOMAIN_SUFFIX placeholder with <LIMA_IP>.sslip.io
+# in the Pingora ConfigMap's routing table.
+#
+# How to apply: the local-up.sh script calls:
+#   LIMA_IP=$(limactl shell sunbeam hostname -I | awk '{print $1}')
+#   sed "s/DOMAIN_SUFFIX/${LIMA_IP}.sslip.io/g" overlays/local/values-domain.yaml | kubectl apply -f -
+#
+# Or use kustomize's replacements feature if the IP is known at kustomize time.
+#
+# This is a strategic merge patch on the pingora-config ConfigMap.
+
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: pingora-config
+  namespace: ingress
+data:
+  # DOMAIN_SUFFIX is substituted at deploy time by local-up.sh.
+  # The local overlay domain is: <LIMA_IP>.sslip.io
+  # Example: 192.168.5.2.sslip.io
+  domain-suffix: "LIMA_IP.sslip.io"