chore: update DETAILED_GAPS_AND_ISSUES_LIST and apply-token-aggregation-fix.sh

- Refined instructions for applying the nginx fix and deploying configurations on VMID 5000.
- Enhanced the script to handle the absence of the postgres user more gracefully, allowing for migrations to be run in different contexts.

Made-with: Cursor

docs/00-meta/OPERATOR_READY_CHECKLIST.md

@@ -81,6 +81,19 @@ Single contract retry: `./scripts/verify/run-contract-verification-with-proxy.sh
 
 ---
 
+## 5a. LAN: Token-aggregation DB and migrations (VMID 5000)
+
+If `/health` returns "database token_aggregation does not exist":
+
+```bash
+./scripts/apply-token-aggregation-fix.sh          # create DB, run migrations, restart (via Proxmox)
+./scripts/apply-token-aggregation-fix.sh --dry-run  # print steps only
+```
+
+If VMID 5000 has no `postgres` user, run `createdb` and migrations on the host where PostgreSQL runs, or set token-aggregation `DATABASE_URL` to `explorer_db` and run `smom-dbis-138/services/token-aggregation/scripts/run-migrations.sh` there.
+
+---
+
 ## 5b. LAN: Chain 138 next steps (Phase 2: preflight → mirror+pool → register c* as GRU → verify)
 
 **Ref:** [DEPLOYMENT_ORDER_OF_OPERATIONS](../03-deployment/DEPLOYMENT_ORDER_OF_OPERATIONS.md) Phase 2. Use when mirror/pool/GRU registration or verify are pending.