feat(infra): prestage broader app exposure hardening

apps/fc-devicemgmt/deployment-web.yaml

@@ -52,6 +52,8 @@ spec:
         flowercore.io/tenant-id: system
         flowercore.io/created-by: bluejay-infra
       annotations:
+        fc.flowercore.io/healthz-anon: "true"
+        fc.flowercore.io/probe-path: "/healthz"
         prometheus.io/scrape: "true"
         prometheus.io/port: "8080"
         prometheus.io/path: "/metrics"
@@ -67,6 +69,7 @@ spec:
           ports:
             - name: http
               containerPort: 8080
+          # fc-safe-to-expose: X-Forwarded-Proto handled by AddFlowerCoreWebAuth (ADR-178) before any future public/OIDC flip.
           env:
             - name: ASPNETCORE_URLS
               value: "http://+:8080"