🚀 ci(picture): add picture app to CI/CD deployment pipeline

- Add picture-backend and picture-web to CI Docker build matrix
- Add picture services to staging deployment workflow
- Add picture-backend to production deployment workflow
- Create Dockerfile and docker-entrypoint.sh for picture-web
- Fix picture-backend Dockerfile port (3003→3006) and health endpoint
- Add picture routes to Caddyfile.staging
- Add REPLICATE_API_TOKEN and MANA_CORE_SERVICE_KEY env vars

.github/workflows/cd-production.yml

@@ -22,6 +22,7 @@ on:
           - manadeck-backend
           - nutriphi-backend
           - news-api
+          - picture-backend
       environment:
         description: 'Deployment environment'
         required: true
@@ -269,7 +270,7 @@ jobs:
 
             if [ "$SERVICE" == "all" ]; then
               # Rolling update for all services
-              for service in mana-core-auth maerchenzauber-backend chat-backend manadeck-backend nutriphi-backend news-api; do
+              for service in mana-core-auth maerchenzauber-backend chat-backend manadeck-backend nutriphi-backend news-api picture-backend; do
                 echo "Deploying \$service..."
                 docker compose up -d --no-deps --scale \$service=2 \$service
                 sleep 10