offinfra-onboard: per-repo GHA->ghcr migration tool + f1-stream ghcr pull secret

ADR-0002 tracer bullet (infra#13), per Viktor's go-ahead. Idempotent
script: GitHub mirror repo (create/unarchive/visibility), GHA secrets
via gh, Forgejo push-mirror (sync_on_commit) + initial sync, Woodpecker
mirror registration, renders build.yml/deploy.yml from templates
(single-manifest provenance:false, svu semver to Forgejo, ghcr keep-10
retention, Slack notify-failure, manual-event deploy), removes the old
in-cluster build pipeline, commits on the Canonical side. f1-stream
stack gains the ghcr-credentials imagePullSecret (first consumer).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

scripts/offinfra-templates/build.yml.tmpl

@@ -0,0 +1,115 @@
+name: Build and Push
+
+# Off-infra build (ADR-0002). Canonical repo is Forgejo viktor/{{NAME}}, which
+# push-mirrors here; this workflow builds on GitHub-hosted runners, pushes the
+# image to GHCR, then signals the Woodpecker deploy pipeline (repo {{WP_REPO_ID}})
+# to roll the cluster — the homelab never sees build IO or registry pushes.
+#
+# Committed on the FORGEJO side (the mirror is one-way; commits made on GitHub
+# are overwritten by the next sync). Generated by infra/scripts/offinfra-onboard.
+on:
+  push:
+    branches: [master]
+  workflow_dispatch: {}
+
+permissions:
+  contents: read
+  packages: write
+
+jobs:
+  lint-and-test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+{{TEST_STEPS}}
+
+  build:
+    needs: lint-and-test
+    runs-on: ubuntu-latest
+    outputs:
+      image_tag: ${{ steps.meta.outputs.sha }}
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          fetch-depth: 0      # full history + tags so svu sees the last vX.Y.Z
+          fetch-tags: true
+      # Auto-semver (svu): tag-only, pushed to CANONICAL Forgejo (GitHub tags
+      # would be wiped by the next mirror sync). Best-effort: never blocks the build.
+      - name: Compute + tag semver (svu)
+        env:
+          FORGEJO_GIT_TOKEN: ${{ secrets.FORGEJO_GIT_TOKEN }}
+        run: |
+          set +e
+          git config user.email "ci@viktorbarzin.me"
+          git config user.name "{{NAME}}-ci"
+          git config --global --add safe.directory "$GITHUB_WORKSPACE"
+          curl -sSL https://github.com/caarlos0/svu/releases/download/v3.4.1/svu_3.4.1_linux_amd64.tar.gz | tar -xz svu
+          CUR=$(./svu current 2>/dev/null)
+          NEXT=$(./svu next 2>/dev/null)
+          echo "svu current=[$CUR] next=[$NEXT]"
+          if [ -n "$NEXT" ] && [ "$NEXT" != "$CUR" ]; then
+            git tag "$NEXT" 2>/dev/null
+            git push "https://viktor:${FORGEJO_GIT_TOKEN}@forgejo.viktorbarzin.me/viktor/{{NAME}}.git" "$NEXT" && echo "pushed tag $NEXT to forgejo" || echo "tag push failed (non-blocking)"
+          fi
+          exit 0
+      - uses: docker/setup-buildx-action@v4
+      - uses: docker/login-action@v4
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - id: meta
+        run: echo "sha=$(echo ${{ github.sha }} | cut -c1-8)" >> "$GITHUB_OUTPUT"
+      - uses: docker/build-push-action@v7
+        with:
+          context: {{CONTEXT}}
+          push: true
+          platforms: linux/amd64
+          # Single-manifest images (no provenance/SBOM attestation children) so
+          # registry retention can never orphan index children (ADR-0002).
+          provenance: false
+          tags: |
+            ghcr.io/viktorbarzin/{{IMAGE}}:${{ steps.meta.outputs.sha }}
+            ghcr.io/viktorbarzin/{{IMAGE}}:latest
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+      # Keep the newest ~10 versions on ghcr (latest rides the newest one).
+      - name: ghcr retention (keep 10)
+        uses: actions/delete-package-versions@v5
+        continue-on-error: true
+        with:
+          package-name: {{IMAGE}}
+          package-type: container
+          min-versions-to-keep: 10
+
+  deploy:
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+      # Signal Woodpecker (repo {{WP_REPO_ID}} = ViktorBarzin/{{NAME}} mirror) to run
+      # .woodpecker/deploy.yml — kubectl set image in-cluster (agent SA is cluster-admin).
+      - name: Trigger Woodpecker deploy
+        run: |
+          for attempt in 1 2 3; do
+            STATUS=$(curl -s -o /dev/null -w "%{http_code}" -X POST \
+              "https://ci.viktorbarzin.me/api/repos/{{WP_REPO_ID}}/pipelines" \
+              -H "Authorization: Bearer ${{ secrets.WOODPECKER_TOKEN }}" \
+              -H "Content-Type: application/json" \
+              -d "{\"branch\":\"master\",\"variables\":{\"IMAGE_TAG\":\"${{ needs.build.outputs.image_tag }}\",\"IMAGE_NAME\":\"ghcr.io/viktorbarzin/{{IMAGE}}\"}}")
+            if [ "$STATUS" -ge 200 ] && [ "$STATUS" -lt 300 ]; then
+              echo "Woodpecker deploy triggered (HTTP $STATUS)"; exit 0
+            fi
+            echo "Attempt $attempt failed (HTTP $STATUS), retrying in 30s..."; sleep 30
+          done
+          echo "Failed to trigger Woodpecker deploy after 3 attempts"; exit 1
+
+  notify-failure:
+    needs: [lint-and-test, build, deploy]
+    if: failure()
+    runs-on: ubuntu-latest
+    steps:
+      - name: Slack notify
+        run: |
+          curl -sf -X POST -H 'Content-Type: application/json' \
+            -d "{\"text\":\":rotating_light: {{NAME}} off-infra build FAILED: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}\"}" \
+            "${{ secrets.SLACK_WEBHOOK }}" || true

scripts/offinfra-templates/deploy.yml.tmpl

@@ -0,0 +1,19 @@
+# Auto-deploy, triggered ONLY by the GitHub Actions build POSTing to the
+# Woodpecker API (manual event, with IMAGE_TAG + IMAGE_NAME) after a successful
+# off-infra build+push to GHCR (ADR-0002). event:[manual] (NOT push) so the
+# Forgejo->GitHub mirror's raw pushes don't fire a spurious deploy.
+# The woodpecker-agent SA is cluster-admin — no kubeconfig needed.
+# Generated by infra/scripts/offinfra-onboard.
+when:
+  - event: manual
+
+steps:
+  - name: check-vars
+    image: alpine
+    commands:
+      - "[ -n \"$IMAGE_TAG\" ] || (echo 'IMAGE_TAG not set — refusing to deploy'; exit 1)"
+
+  - name: deploy
+    image: bitnami/kubectl:latest
+    commands:
+{{DEPLOY_CMDS}}