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

scripts/local-down.sh

@@ -0,0 +1,33 @@
+#!/usr/bin/env bash
+# Stop the Sunbeam Lima VM (preserves disk by default).
+set -euo pipefail
+
+DELETE=false
+HARD=false
+
+for arg in "$@"; do
+  case $arg in
+    --delete) DELETE=true ;;
+    --hard)   HARD=true ;;
+    *)
+      echo "Usage: $0 [--hard] [--delete]" >&2
+      exit 1
+      ;;
+  esac
+done
+
+if $HARD; then
+  echo "==> Force-stopping Lima VM 'sunbeam'..."
+  limactl stop --force sunbeam
+else
+  echo "==> Stopping Lima VM 'sunbeam' (graceful)..."
+  limactl stop sunbeam
+fi
+
+if $DELETE; then
+  echo "==> Deleting Lima VM 'sunbeam' (disk will be lost)..."
+  limactl delete sunbeam
+  echo "==> VM deleted."
+else
+  echo "==> VM stopped. Disk preserved. Run scripts/local-up.sh to restart."
+fi