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>

.gitea/workflows/ci.yml

@@ -0,0 +1,85 @@
+# BlueCap Strategies CI — Gitea Actions (ADR-0007)
+#
+# Pipeline: install → build (typecheck) → seo:lint → e2e → build & push image to Gitea Packages
+# → bump the image tag in k8s/ and commit back to main. ArgoCD then reconciles k3s.
+#
+# PREREQUISITES (homelab, verify before the first run — see docs/gitops-deployment-strategy.md):
+#   1. Docker must be usable from the job container. The runner mounts /var/run/docker.sock; if
+#      jobs can't see it, enable socket passthrough in act_runner config or switch this to kaniko.
+#   2. The RUNNER HOST's dockerd must treat 10.66.15.22:3000 as an insecure (HTTP) registry
+#      ("insecure-registries": ["10.66.15.22:3000"] in /etc/docker/daemon.json).
+#   3. K3S must trust the same HTTP registry — add a registries.yaml entry (k3s_registry_mirrors)
+#      for 10.66.15.22:3000, then restart k3s, or the pods can't pull the image.
+#   4. The Gitea container package should be PUBLIC (simplest). If PRIVATE, add an imagePullSecret
+#      (see k8s/deployment.yaml) and grant the run token package:write.
+#   5. secrets.GITEA_TOKEN (auto-injected per run) needs write access to this repo (tag-bump commit)
+#      and the package registry.
+
+name: CI
+on:
+  push:
+    branches: [main]
+    # Don't re-trigger on the CI tag-bump commit (touches k8s/) or docs-only changes.
+    paths-ignore:
+      - 'k8s/**'
+      - 'docs/**'
+      - 'planning/**'
+      - '**/*.md'
+
+env:
+  IMAGE: 10.66.15.22:3000/bmr_bluecap/bcs-website
+
+jobs:
+  ci:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Node 22
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build (typecheck + astro build)
+        run: npm run build
+
+      - name: SEO lint
+        run: npm run seo:lint
+
+      - name: End-to-end tests
+        run: |
+          npx playwright install --with-deps chromium
+          npm run test:e2e
+
+      - name: Compute image tag
+        id: tag
+        run: echo "sha=$(echo ${{ github.sha }} | cut -c1-12)" >> "$GITHUB_OUTPUT"
+
+      - name: Ensure docker + kustomize are available
+        run: |
+          command -v docker >/dev/null 2>&1 || { apt-get update && apt-get install -y docker.io; }
+          command -v kustomize >/dev/null 2>&1 || \
+            curl -sSL "https://github.com/kubernetes-sigs/kustomize/releases/download/kustomize%2Fv5.4.3/kustomize_v5.4.3_linux_amd64.tar.gz" \
+              | tar xz -C /usr/local/bin
+
+      - name: Build & push image to Gitea Packages
+        run: |
+          echo "${{ secrets.GITEA_TOKEN }}" | docker login 10.66.15.22:3000 -u "${{ github.actor }}" --password-stdin
+          docker build -t "$IMAGE:${{ steps.tag.outputs.sha }}" -t "$IMAGE:latest" .
+          docker push "$IMAGE:${{ steps.tag.outputs.sha }}"
+          docker push "$IMAGE:latest"
+
+      - name: Bump k8s image tag and commit back
+        run: |
+          git config user.name "gitea-actions[bot]"
+          git config user.email "gitea-actions@bmr_bluecap"
+          (cd k8s && kustomize edit set image "$IMAGE=$IMAGE:${{ steps.tag.outputs.sha }}")
+          git add k8s/kustomization.yaml
+          git diff --cached --quiet && { echo "no image change"; exit 0; }
+          git commit -m "ci: deploy ${{ steps.tag.outputs.sha }} [skip ci]"
+          git remote set-url origin "http://gitea-actions:${{ secrets.GITEA_TOKEN }}@10.66.15.22:3000/bmr_bluecap/bcs-website.git"
+          git push origin HEAD:main