diagnose and fix: removed rm for skymoney data in deploy)

docs/production-db-recovery-runbook.md

@@ -188,8 +188,19 @@ psql "postgres://<admin-user>:<admin-pass>@127.0.0.1:5432/skymoney" \
 1. `docker-compose.yml` pins volume name: `skymoney_pgdata`.
 2. Deploy workflow sets `COMPOSE_PROJECT_NAME=skymoney`.
 3. Deploy workflow runs `scripts/validate-prod-db-target.sh`.
-4. Deploy workflow runs pre-migration `scripts/backup.sh`.
-5. Deploy workflow uses `prisma migrate deploy` only.
+4. Deploy workflow runs `scripts/guard-prod-volume.sh` and blocks deploy when prod volume is missing/empty.
+5. Deploy workflow runs pre-migration `scripts/backup.sh`.
+6. Deploy workflow uses `prisma migrate deploy` only.
+
+### Intentional rebuild override
+
+If you intentionally need to initialize an empty production volume (rare), set:
+
+```bash
+ALLOW_EMPTY_PROD_VOLUME=1
+```
+
+for one deploy run only, then reset it back to `0`.
 
 ## Quarterly drill requirement