feat(fc-network): add FlowerCore.Network app (read-only pfSense plane, ADR-189)

Stand up the pfSense automation plane (Phase 0, read-only) on RKE2 as an
ArgoCD-managed workload at network.iamworkin.lan.

- namespace fc-network
- Deployment fc-network-web: localhost/fc-network-web:v20260612-0b5b049,
  imagePullPolicy Never, port 5340, /healthz probes, runAsNonRoot 1654 +
  readOnlyRootFilesystem, RWO-safe RollingUpdate (maxSurge 0/maxUnavailable 1),
  auth gate-OFF, SQLite + snapshot-store + intended-model paths under /data.
- PVC fc-network-web-data (longhorn, 2Gi): SQLite index + on-box snapshot store
  (full-fidelity raw config.xml stays on-box; service surfaces redacted only).
- Service (ClusterIP 80 -> 5340), Certificate (ClusterIssuer step-ca-acme),
  IngressRoute (network.iamworkin.lan, all methods — POST ingest is local-only).
- kustomization.yaml for local previews / single-app validation.

The ApplicationSet git generator picks this up as infra-fc-network; if it lags,
the Application is applied manually (documented pattern).

apps/fc-network/ingressroute-web.yaml

@@ -0,0 +1,32 @@
+# LAN ingress for FlowerCore.Network Web (network.iamworkin.lan).
+#
+# RKE2 Traefik has no built-in ACME resolver; TLS certificate ownership stays in
+# cert-manager Certificate/fc-network-web-tls. Phase 0 is read-only but the POST
+# ingest endpoint is genuinely needed by the noc1 exporter, so this route allows
+# all methods (no GET/HEAD-only restriction like fc-dns) — the service itself has
+# NO pfSense write path, so allowing POST here only reaches the local snapshot
+# ingest.
+apiVersion: traefik.io/v1alpha1
+kind: IngressRoute
+metadata:
+  name: fc-network-web
+  namespace: fc-network
+  labels:
+    app: fc-network-web
+    app.kubernetes.io/name: fc-network-web
+    app.kubernetes.io/component: web
+    app.kubernetes.io/part-of: flowercore
+    app.kubernetes.io/managed-by: argocd
+    flowercore.io/tenant-id: system
+    flowercore.io/created-by: bluejay-infra
+spec:
+  entryPoints:
+    - websecure
+  routes:
+    - match: Host(`network.iamworkin.lan`)
+      kind: Rule
+      services:
+        - name: fc-network-web
+          port: 80
+  tls:
+    secretName: fc-network-web-tls