fix(integration-test): ensure integration tests are runned on a separate DB to avoid polution

src/lib.rs

@@ -7,6 +7,11 @@ pub mod domain;
 pub mod infrastructure;
 pub mod interfaces;
 
+// Test-only helpers for #[cfg(integration_tests)] modules across the
+// crate (shared pool URL guard + pre-suite cleanup OnceCell).
+#[cfg(integration_tests)]
+pub mod integration_test_support;
+
 // Common public re-exports
 pub use application::services::folder_service::FolderService;
 pub use application::services::i18n_application_service::I18nApplicationService;