/claim #7528

Fixes database detection and backup support for Docker Compose deployments via GitHub App (build_pack=dockercompose).

Summary

• Add application_id to service_databases and allow service_id to be nullable so ServiceDatabase records can belong to either a Service stack or a docker-compose Application.
• Persist detected compose databases during the docker-compose Application parsing path via isDatabaseImage() (keyed by (application_id, name); previews excluded).
• Add a Backups tab to docker-compose Application configuration to manage scheduled backups for detected DB services.
• Update backup execution + status update paths to support application-owned ServiceDatabase records (server/container resolution; avoid matching preview containers).
• Prevent the cleanup command from deleting application-owned ServiceDatabase records.

Demo Video

TBD (will add)