Add GitOps stack for abrban.com with Gitea Actions CI/CD.

Harbor in-cluster builds via Kaniko, ArgoCD auto-sync, and production Helm values for abrban.com domains.

Co-authored-by: Cursor <cursoragent@cursor.com>

gitops/gitea/values.yaml

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+global:
+  imagePullSecrets:
+    - registry-pull-secret
+  storageClass: local-path
+
+# Local copy in abrban/ (seeded by copy-gitea-image job) — kubelet pulls without proxy-cache
+image:
+  registry: registry.abrban.com
+  repository: abrban/gitea
+  tag: 1.26.1
+  rootless: true
+
+gitea:
+  config:
+    database:
+      DB_TYPE: sqlite3
+    server:
+      DOMAIN: git.abrban.com
+      ROOT_URL: https://git.abrban.com/
+      SSH_DOMAIN: git.abrban.com
+    actions:
+      ENABLED: true
+
+ingress:
+  enabled: true
+  className: traefik
+  annotations:
+    traefik.ingress.kubernetes.io/router.entrypoints: websecure
+  hosts:
+    - host: git.abrban.com
+      paths:
+        - path: /
+          pathType: Prefix
+  tls:
+    - secretName: abrban-wildcard-tls
+      hosts:
+        - git.abrban.com
+
+persistence:
+  enabled: true
+  storageClass: local-path
+  size: 10Gi
+
+# SQLite — no extra DB images to pull
+postgresql:
+  enabled: false
+
+valkey-cluster:
+  enabled: false
+
+valkey:
+  enabled: false
+
+postgresql-ha:
+  enabled: false