Add registry-based prod promotion, separate from auto dev deploy

Dev keeps auto-deploying on every push to main, same as before, but now
also publishes each build to git.jerodrigged.com's container registry
tagged by short commit SHA (best-effort - never blocks the dev deploy
if REGISTRY_TOKEN isn't set yet).

Prod deploys only on an intentional `git push origin main:prod`, and
only ever pulls a pre-built SHA-tagged image - it never rebuilds from
source. This guarantees prod runs the exact artifact dev already
validated, and makes promoting an untested commit fail loudly (pull of
a nonexistent tag) instead of silently rebuilding something new.

Needs new secrets before the prod path works: PROD_SSH_KEY, PROD_HOST,
PROD_USER, REGISTRY_USER, REGISTRY_TOKEN. PROD_SSH_KEY/PROD_HOST/
REGISTRY_USER are already set; PROD_USER and REGISTRY_TOKEN still need
Jerod's input.

.gitea/workflows/deploy-prod.yml

@@ -0,0 +1,68 @@
+name: Deploy to Prod
+
+# Intentional promotion only: push origin <ref>:prod to ship whatever image
+# dev already built and published for that commit. This workflow never runs
+# `docker compose build` - it only pulls a pre-existing SHA-tagged image from
+# the registry, so prod always runs byte-identical artifacts to what dev
+# already validated. See docker-compose.deploy.yml and CLAUDE.md.
+
+on:
+  push:
+    branches: [prod]
+
+jobs:
+  deploy:
+    name: Deploy & Smoke Test (prod)
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install SSH client
+        run: which ssh || (apt-get update -qq && apt-get install -y -qq openssh-client)
+
+      - name: Setup SSH key
+        run: |
+          mkdir -p ~/.ssh
+          echo "${{ secrets.PROD_SSH_KEY }}" > ~/.ssh/deploy_key
+          chmod 600 ~/.ssh/deploy_key
+          ssh-keyscan -H ${{ secrets.PROD_HOST }} >> ~/.ssh/known_hosts 2>/dev/null || true
+
+      - name: Deploy (pull pre-built image, no rebuild)
+        run: |
+          ssh -i ~/.ssh/deploy_key \
+              -o StrictHostKeyChecking=no \
+              -o ConnectTimeout=10 \
+              ${{ secrets.PROD_USER }}@${{ secrets.PROD_HOST }} \
+              'set -e
+               cd /opt/lisilou-portfolio
+               git fetch origin
+               git reset --hard origin/prod
+               SHA=$(git rev-parse --short HEAD)
+               echo "${{ secrets.REGISTRY_TOKEN }}" | docker login git.jerodrigged.com -u "${{ secrets.REGISTRY_USER }}" --password-stdin
+               export IMAGE_TAG=$SHA
+               docker compose -f docker-compose.yml -f docker-compose.deploy.yml pull
+               docker compose -f docker-compose.yml -f docker-compose.deploy.yml up -d
+               echo "Deployed $SHA (pulled, not built)"'
+
+      - name: Wait for health check
+        run: |
+          echo "Waiting for services..."
+          for i in $(seq 1 24); do
+            if curl -sf --max-time 4 "http://${{ secrets.PROD_HOST }}:8080/health" > /dev/null 2>&1; then
+              echo "Services are up (attempt $i)"
+              exit 0
+            fi
+            echo "  Attempt $i/24 — sleeping 5s"
+            sleep 5
+          done
+          echo "Health check timed out after 2 minutes"
+          exit 1
+
+      - name: Smoke tests
+        run: bash scripts/smoke-test.sh "http://${{ secrets.PROD_HOST }}:8080"
+
+      - name: Cleanup SSH key
+        if: always()
+        run: rm -f ~/.ssh/deploy_key

.gitea/workflows/deploy.yml

@@ -34,6 +34,20 @@ jobs:
                git fetch origin
                git reset --hard origin/main
                docker compose build
+               SHA=$(git rev-parse --short HEAD)
+               if [ -n "${{ secrets.REGISTRY_TOKEN }}" ]; then
+                 set +e
+                 echo "${{ secrets.REGISTRY_TOKEN }}" | docker login git.jerodrigged.com -u "${{ secrets.REGISTRY_USER }}" --password-stdin \
+                   && docker tag lisilou-portfolio-web:local git.jerodrigged.com/jhodgkin/lisilou-portfolio-web:$SHA \
+                   && docker tag lisilou-portfolio-api:local git.jerodrigged.com/jhodgkin/lisilou-portfolio-api:$SHA \
+                   && docker push git.jerodrigged.com/jhodgkin/lisilou-portfolio-web:$SHA \
+                   && docker push git.jerodrigged.com/jhodgkin/lisilou-portfolio-api:$SHA \
+                   && echo "Published $SHA to registry" \
+                   || echo "WARNING: registry publish failed, continuing deploy anyway"
+                 set -e
+               else
+                 echo "REGISTRY_TOKEN not set - skipping registry publish (prod promotion unavailable until configured)"
+               fi
                docker compose up -d
                echo "Deploy complete"'