feat(apps): onboard Gitea via ServiceDefinition renderer

Author catalog/gitea.yaml (kind: container, public, DR-critical git host per
docs/13 row 12), render to apps/gitea.yaml (--no-image-automation), and wire it
into apps/kustomization.yaml.

- image gitea/gitea:1.24.3, web port 3000 at gitea.home.keithjackson.dev
- 10Gi Longhorn PVC for /data (repos + SQLite DB), daily-offcluster backup
- exposure public, egress internet, auth oidc (platform-admins), metrics on
- Traces: R-STATE-02/03, R-NET-01/02, R-DNS/R-TLS, R-IDP-02/06, R-OBS-01, R-UPD-01/03

Co-Authored-By: Claude Opus 4.8 <[email protected]>

apps/gitea.yaml

@@ -0,0 +1,194 @@
+---
+# Namespace (trust zone; default-deny + policies apply)
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: gitea
+  labels:
+    homelab.keithjackson.dev/app-namespace: 'true'
+    gateway-access: shared
+  annotations:
+    homelab.keithjackson.dev/backup-policy: daily-offcluster
+---
+# Default-deny baseline (R-NET-01): deny all, allow only DNS
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: default-deny
+  namespace: gitea
+  labels:
+    homelab.keithjackson.dev/baseline: default-deny
+spec:
+  podSelector: {}
+  policyTypes:
+  - Ingress
+  - Egress
+  ingress: []
+  egress:
+  - to:
+    - namespaceSelector:
+        matchLabels:
+          kubernetes.io/metadata.name: kube-system
+    ports:
+    - protocol: UDP
+      port: 53
+    - protocol: TCP
+      port: 53
+---
+# PVC gitea-data (R-STATE)
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: gitea-data
+  namespace: gitea
+  labels:
+    app.kubernetes.io/name: gitea
+spec:
+  accessModes:
+  - ReadWriteOnce
+  storageClassName: longhorn
+  resources:
+    requests:
+      storage: 10Gi
+---
+# Deployment (R-PLAT-02)
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: gitea
+  namespace: gitea
+  labels:
+    app.kubernetes.io/name: gitea
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: gitea
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: gitea
+        homelab.keithjackson.dev/egress-class: internet
+        homelab.keithjackson.dev/auth-mode: oidc
+      annotations:
+        homelab.keithjackson.dev/auth-mode: oidc
+        homelab.keithjackson.dev/auth-groups: platform-admins
+    spec:
+      containers:
+      - name: gitea
+        image: gitea/gitea:1.24.3
+        ports:
+        - containerPort: 3000
+        volumeMounts:
+        - name: data
+          mountPath: /data/data
+      volumes:
+      - name: data
+        persistentVolumeClaim:
+          claimName: gitea-data
+---
+# Service
+apiVersion: v1
+kind: Service
+metadata:
+  name: gitea
+  namespace: gitea
+  labels:
+    app.kubernetes.io/name: gitea
+spec:
+  selector:
+    app.kubernetes.io/name: gitea
+  ports:
+  - name: port-3000
+    port: 3000
+    targetPort: 3000
+---
+# CiliumNetworkPolicy gateway-ingress allow (R-NET-01/02): gitea-allow-gateway-ingress
+apiVersion: cilium.io/v2
+kind: CiliumNetworkPolicy
+metadata:
+  name: gitea-allow-gateway-ingress
+  namespace: gitea
+  labels:
+    app.kubernetes.io/name: gitea
+spec:
+  endpointSelector:
+    matchLabels:
+      app.kubernetes.io/name: gitea
+  ingress:
+  - fromEntities:
+    - ingress
+    toPorts:
+    - ports:
+      - port: '3000'
+        protocol: TCP
+---
+# HTTPRoute gitea-3000 (R-TLS/R-DNS)
+apiVersion: gateway.networking.k8s.io/v1
+kind: HTTPRoute
+metadata:
+  name: gitea-3000
+  namespace: gitea
+  labels:
+    app.kubernetes.io/name: gitea
+  annotations:
+    homelab.keithjackson.dev/auth-mode: oidc
+    homelab.keithjackson.dev/auth-groups: platform-admins
+spec:
+  parentRefs:
+  - name: shared
+    namespace: gateway
+    sectionName: https
+  hostnames:
+  - gitea.home.keithjackson.dev
+  rules:
+  - matches:
+    - path:
+        type: PathPrefix
+        value: /
+    backendRefs:
+    - name: gitea
+      port: 3000
+---
+# ServiceMonitor (R-OBS-01)
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: gitea
+  namespace: gitea
+  labels:
+    release: kube-prometheus-stack
+    app.kubernetes.io/name: gitea
+spec:
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: gitea
+  namespaceSelector:
+    matchNames:
+    - gitea
+  endpoints:
+  - port: metrics
+    interval: 30s
+---
+# PrometheusRule SLI alerts (R-OBS-01)
+apiVersion: monitoring.coreos.com/v1
+kind: PrometheusRule
+metadata:
+  name: gitea-slis
+  namespace: gitea
+  labels:
+    release: kube-prometheus-stack
+    app.kubernetes.io/name: gitea
+spec:
+  groups:
+  - name: gitea.slis
+    rules:
+    - alert: gitea-down
+      expr: up{job="gitea"} == 0
+      for: 5m
+      labels:
+        severity: critical
+        service: gitea
+      annotations:
+        summary: gitea is down
+        description: 'gitea has been unreachable for 5m (SLI: up).'

apps/kustomization.yaml

@@ -7,3 +7,4 @@ apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 resources:
   - pihole.yaml
+  - gitea.yaml