Add Gitea Actions CI, ArgoCD Application, and Gitea Packages wiring

- .gitea/workflows/ci.yml: build → seo:lint → e2e → image build/push →
  bump k8s image tag and commit back (paths-ignore + [skip ci] guard)
- argocd/bcs-website-application.yaml: ArgoCD App (internal Gitea repoURL, k8s path)
- k8s: image → Gitea Packages path; kustomization images newTag stanza
- ADR-0007 (Gitea Actions + Packages), supersedes GHCR/GitHub bits of ADR-0001
- Reconcile gitops-deployment-strategy.md to Gitea

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docs/adr/0001-gitops-with-argocd.md

@@ -1,6 +1,8 @@
 # ADR-0001: GitOps deployment via ArgoCD (not Flux)
 
-**Status:** Accepted — 2026-07-15
+**Status:** Accepted — 2026-07-15 · CI/registry specifics (GitHub Actions + GHCR) **superseded by
+[ADR-0007](0007-gitea-actions-and-packages.md)** (Gitea Actions + Gitea Packages). The ArgoCD /
+GitOps model here stands.
 
 ## Context