fix: resolve all clippy warnings and convert integration_tests to custom cfg

- Add type aliases (FileRow, FolderRow, FolderRowPaginated, FolderRowOptUser) to reduce type complexity
- Simplify redundant closures in app_password_handler and webdav_handler
- Remove needless borrow in auth_handler
- Collapse nested if/let chains in login_lockout, webdav_lock, auth, rate_limit
- Box LockEntry in acquire() Err variant to fix large enum variant warning
- Rename DeviceCodeStatus::from_str to parse to avoid should_implement_trait lint
- Add #[allow(clippy::too_many_arguments)] and #[allow(clippy::result_unit_err)] where appropriate
- Convert integration_tests from cargo feature to custom cfg attribute
- Add check-cfg lint config in Cargo.toml for integration_tests cfg

src/application/services/mod.rs

@@ -20,10 +20,10 @@ pub mod trash_service;
 pub mod wopi_lock_service;
 pub mod wopi_token_service;
 
-#[cfg(all(test, feature = "integration_tests"))]
-mod trash_service_test;
 #[cfg(test)]
 mod idor_protection_test;
+#[cfg(all(test, integration_tests))]
+mod trash_service_test;
 
 // Re-exportar para facilitar acceso
 pub use file_management_service::FileManagementService;