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

base/data/valkey-deployment.yaml

@@ -0,0 +1,34 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: valkey
+  namespace: data
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: valkey
+  template:
+    metadata:
+      labels:
+        app: valkey
+    spec:
+      containers:
+        - name: valkey
+          image: valkey/valkey:8-alpine
+          ports:
+            - name: valkey
+              containerPort: 6379
+              protocol: TCP
+          args:
+            - valkey-server
+            - --maxmemory
+            - 56mb
+            - --maxmemory-policy
+            - allkeys-lru
+          resources:
+            limits:
+              memory: 64Mi
+            requests:
+              memory: 32Mi
+              cpu: 25m