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/file_management_service.rs

@@ -4,11 +4,11 @@ use crate::application::dtos::file_dto::FileDto;
 use crate::application::ports::file_ports::FileManagementUseCase;
 use crate::application::ports::storage_ports::{CopyFolderTreeResult, FileReadPort, FileWritePort};
 use crate::application::ports::trash_ports::TrashUseCase;
+use crate::application::services::trash_service::TrashService;
 use crate::common::errors::DomainError;
-use tracing::{error, info, warn};
 use crate::infrastructure::repositories::pg::file_blob_read_repository::FileBlobReadRepository;
 use crate::infrastructure::repositories::pg::file_blob_write_repository::FileBlobWriteRepository;
-use crate::application::services::trash_service::TrashService;
+use tracing::{error, info, warn};
 
 /// Service for file management operations (move, delete).
 ///