Align project devices with circuit model

docs/local-db-circuit-first-migration.md

@@ -10,7 +10,8 @@ This project uses SQLite at `data/leistungsbilanz.db` and Drizzle migrations in
 npm run db:backup
 ```
 
-2. Apply pending schema migrations (includes `0008_circuit_first_model`)
+2. Apply pending schema migrations (includes `0008_circuit_first_model` and the additive
+   `0009_project_device_circuit_fields` transition)
 
 ```bash
 npm run db:migrate
@@ -52,6 +53,8 @@ WHERE type = 'table'
 ORDER BY name;
 ```
 
+The verification command also checks the circuit-first project-device columns added by migration `0009`.
+
 ```sql
 SELECT circuit_list_id, key, prefix, sort_order
 FROM circuit_sections