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/infrastructure/services/zip_service.rs

@@ -1,3 +1,5 @@
+use crate::application::services::file_retrieval_service::FileRetrievalService;
+use crate::application::services::folder_service::FolderService;
 use crate::{
     application::dtos::file_dto::FileDto,
     application::ports::file_ports::FileRetrievalUseCase,
@@ -16,8 +18,6 @@ use thiserror::Error;
 use tokio::io::BufWriter;
 use tokio_util::compat::Compat;
 use tracing::*;
-use crate::application::services::file_retrieval_service::FileRetrievalService;
-use crate::application::services::folder_service::FolderService;
 
 /// Error related to ZIP file creation
 #[derive(Debug, Error)]