fix(f5.1): allow inventory area context without operator

api-v3/src/database/migrations/1790087400000-f5-1-clean-manual-inventory.ts

@@ -48,6 +48,20 @@ export class F51CleanManualInventory1790087400000 implements MigrationInterface
       END $$;
     `);
 
+    // F5.1 decouples the physical Inventory tree from Empresa. A structural
+    // Asset may therefore inherit an Area while no operator has been assigned
+    // yet. Keep the useful invariant that an operator can never exist without
+    // an Area, but remove the old all-or-nothing pair requirement.
+    await queryRunner.query(`
+      ALTER TABLE asset_context_history
+      DROP CONSTRAINT IF EXISTS chk_asset_context_history_context_pair
+    `);
+    await queryRunner.query(`
+      ALTER TABLE asset_context_history
+      ADD CONSTRAINT chk_asset_context_history_context_pair
+      CHECK (operator_company_id IS NULL OR operational_area_id IS NOT NULL)
+    `);
+
     // Departamento becomes the real root of the physical Inventory tree.
     await queryRunner.query(`
       INSERT INTO asset_types(code,name,description,can_be_root,is_active,operational_role)