Add automated production deployment pipeline:
- scripts/deploy-prod.sh: Full deployment script with pre/post DB backups,
migration tracking via shared.schema_migrations table, health checks,
and automatic rollback on failure (restores DB, reverts code, rebuilds)
- .gitea/workflows/deploy.yml: Manual-trigger Gitea Actions workflow for
intentional production deployments with optional --seed-existing flag
- scripts/db-backup.sh: Add --yes/-y flag to skip interactive confirmation
prompts, enabling automated restore during rollback
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>